Daikin REYQ8-48PY1B Service Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Heater
  5. REYQ8-48PY1B
  6. Service manual

Daikin REYQ8-48PY1B Service Manual

Heat recovery 50hz
Hide thumbs Also See for REYQ8-48PY1B:
1
Table Of Contents
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
Table of Contents

Advertisement

Quick Links

SiBE37-701_B
Service
Manual
REYQ8-48PY1B
R-410A Heat Recovery 50Hz

Advertisement

Table of Contents
loading

Related Manuals for Daikin REYQ8-48PY1B

Summary of Contents for Daikin REYQ8-48PY1B

  • Page 1 SiBE37-701_B Service Manual REYQ8-48PY1B R-410A Heat Recovery 50Hz...

  • Page 2: Table Of Contents

    SiBE37-701_B R-410A Heat Recovery 50Hz 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 PREFACE ....................x Part 1 General Information ............1 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3.
  • Page 3 SiBE37-701_B 2.3 Electronic Expansion Valve PI Control..........116 2.4 Step Control of Outdoor Unit Fans ............116 2.5 Outdoor Unit Fan Control in Cooling Operation ........117 2.6 Heat Exchanger Control ...............118 3. Special Control..................119 3.1 Startup Control ..................119 3.2 Large Capacity Start Up Control (Heating)...........121 3.3 Oil Return Operation ................122 3.4 Defrost Operation .................126 3.5 Pump down Residual Operation............128...
  • Page 4 SiBE37-701_B 2.5 Remote Controller Service Mode ............248 2.6 Test Run Mode..................251 2.7 Remote Controller Self-Diagnosis Function .........251 3. Troubleshooting by Indication on the Remote Controller ....259 3.1 “ A0 ” Indoor Unit: Error of External Protection Device......259 3.2 “ A1 ” Indoor Unit: PCB Defect ..............260 3.3 “...
  • Page 5 SiBE37-701_B 3.34 “ J8 ” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) ..................312 3.35 “ J9 ” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T or R13T) ............313 3.36 “ JA ” Outdoor Unit: Malfunction of High Pressure Sensor......314 3.37 “...
  • Page 6 SiBE37-701_B 5.2 Display “Under Centralized Control” Blinks (Repeats Single Blink)................378 5.3 Display “Under Centralized Control” Blinks (Repeats Double Blink) ................381 Part 7 Appendix................. 396 1. Piping Diagrams..................397 1.1 Outdoor Unit ..................397 1.2 Indoor Unit....................402 1.3 BS Unit ....................407 2. Wiring Diagrams for Reference............408 2.1 Outdoor Unit ..................408 2.2 Field Wiring ..................413 2.3 Indoor Unit....................416...

  • Page 7: Introduction

    SiBE37-701_B Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 8 Introduction SiBE37-701_B Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
  • Page 9 SiBE37-701_B Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.
  • Page 10 Introduction SiBE37-701_B Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 11: Preface

    This is the new service manual for Daikin's Year 2011 VRVIII series Heat Recovery System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs.

  • Page 12: Part 1 General Information

    SiBE37-701_B Part 1 General Information 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ....................3 2.2 Outdoor Units ...................4 3. Combination of Outdoor Units..............5 4. Model Selection..................6 General Information...

  • Page 13: Model Names Of Indoor/Outdoor Units

    SiBE37-701_B Model Names of Indoor/Outdoor Units 1. Model Names of Indoor/Outdoor Units Indoor Units Power Type Model Name Supply Roundflow Ceiling FXFQ 20P8 25P8 32P8 40P8 50P8 63P8 80P8 100P8 125P8 — — — Mounted Cassette 600×600 4-Way Blow FXZQ 20M9 25M9 32M9...

  • Page 14: External Appearance

    External Appearance SiBE37-701_B 2. External Appearance Indoor Units Roundflow Ceiling Mounted Cassette Concealed Ceiling Unit FXMQ20P FXMQ63P FXFQ20P FXMQ25P FXMQ80P FXFQ25P FXMQ32P FXMQ100P FXFQ32P FXMQ40P FXMQ125P FXFQ40P FXMQ50P FXMQ140P FXFQ50P FXFQ63P FXFQ80P FXFQ100P FXFQ125P 600×600 4-Way Blow Concealed Ceiling Unit Ceiling Mounted Cassette (Large) FXZQ20M...

  • Page 15: Outdoor Units

    SiBE37-701_B External Appearance Outdoor Units REYQ8P, 10P, 12P, 14P, 16P REYQ18P, 20P, 22P, 24P 8, 10, 12, 14, 16 HP 18, 20, 22, 24 HP 22.4 ~ 40.0, 45.0 kW 50.4 ~ 67.0 kW REYQ26P, 28P REYQ30P, 32P REYQ34P, 36P, 38P, 40P 26, 28 HP 30, 32 HP 34, 36, 38, 40 HP...

  • Page 16: Combination Of Outdoor Units

    38HP ●● ● 40HP Heat Recovery: BHFP26P136 ● ●● 42HP ● ●● 44HP ● ●● 46HP ●●● 48HP Note: For multiple connection of 18HP system or more, an optional Daikin Outdoor Unit Multi Connection Piping Kit is required. General Information...

  • Page 17: Model Selection

    SiBE37-701_B Model Selection 4. Model Selection VRV III Heat Recovery Series Connectable indoor units number and capacity Normal Series 10HP 12HP 14HP 16HP 18HP 20HP System name REYQ8P REYQ10P REYQ12P REYQ14P REYQ16P REYQ18P REYQ20P Outdoor unit 1 REYQ8P REYQ10P REYQ12P REYQ14P REYQ16P REMQ8P...
  • Page 18 Model Selection SiBE37-701_B Connectable Indoor Unit Power Type Model Name Supply Roundflow Ceiling FXFQ 20P8 25P8 32P8 40P8 50P8 63P8 80P8 100P8 125P8 — — — Mounted Cassette 600×600 4-Way Blow FXZQ 20M9 25M9 32M9 40M9 50M9 — — — —...
  • Page 19 SiBE37-701_B Model Selection Differences from Conventional Models Differences Item Object New model (P Model) Conventional model (M Model) NONE Compressor Connection of equalizer oil pipe (No particular changes in terms of service) Equalizer oil pipe for multi- NONE outdoor-unit system Refilling quantity due to piping Refilling quantity due to piping Workability...

  • Page 20: Part 2 Specifications

    SiBE37-701_B Part 2 Specifications 1. Specifications ..................10 1.1 Outdoor Units ..................10 1.2 Indoor Units ....................21 1.3 BS Units ....................57 Specifications...

  • Page 21: Specifications

    SiBE37-701_B Specifications 1. Specifications Outdoor Units Heat Recovery 50Hz <REYQ-P> Model Name REYQ8PY1B REYQ10PY1B kcal / h 19,400 24,300 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 76,800 96,200 22.5 28.2 ★ 2 Cooling Capacity (19.0°CWB) 22.4 28.0 kcal / h 21,500 27,100 ★...
  • Page 22 Specifications SiBE37-701_B Model Name REYQ12PY1B REYQ14PY1B kcal / h 29,000 35,500 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 115,000 141,000 33.7 41.3 ★ 2 Cooling Capacity (19.0°CWB) 33.5 40.0 kcal / h 32,300 38,700 ★ 3 Heating Capacity Btu / h 128,000 154,000 37.5...
  • Page 23 SiBE37-701_B Specifications Model Name REYQ16PY1B kcal / h 40,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 159,000 46.5 ★ 2 Cooling Capacity (19.0°CWB) 45.0 kcal / h 43,000 ★ 3 Heating Capacity Btu / h 171,000 50.0 Y1 Type Ivory White 5Y7.5/1 Casing Color Y1E Type...
  • Page 24 Specifications SiBE37-701_B Model Name (Combination Unit) REYQ18P7Y1B REYQ20P7Y1B Model Name (Independent Unit) REMQ8P7Y1B+REMQ10P7Y1B REMQ8P7Y1B+REMQ12P7Y1B kcal / h 43,600 48,300 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 173,000 192,000 50.7 56.2 ★ 2 Cooling Capacity (19.0°CWB) 50.4 55.9 kcal / h 48,600 53,800 ★...
  • Page 25 SiBE37-701_B Specifications Model Name (Combination Unit) REYQ22P7Y1B REYQ24P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ12P7Y1B REMQ12P7Y1B+REMQ12P7Y1B kcal / h 53,200 58,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 211,000 230,000 61.9 67.4 ★ 2 Cooling Capacity (19.0°CWB) 61.5 67.0 kcal / h 59,300 64,500 ★...
  • Page 26 Specifications SiBE37-701_B Model Name (Combination Unit) REYQ26P7Y1B REYQ28P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ16P7Y1B REMQ12P7Y1B+REMQ16P7Y1B kcal / h 63,100 67,900 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 250,000 270,000 73.4 79.0 ★ 2 Cooling Capacity (19.0°CWB) 73.0 78.5 kcal / h 70,100 75,300 ★...
  • Page 27 SiBE37-701_B Specifications Model Name (Combination Unit) REYQ30P7Y1B REYQ32P7Y1B Model Name (Independent Unit) REMQ14P7Y1B+REMQ16P7Y1B REMQ16P7Y1B+REMQ16P7Y1B kcal / h 73,500 77,800 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 292,000 309,000 85.5 90.5 ★ 2 Cooling Capacity (19.0°CWB) 85.0 90.0 kcal / h 81,700 86,000 ★...
  • Page 28 Specifications SiBE37-701_B Model Name (Combination Unit) REYQ34P7Y1B REYQ36P7Y1B Model Name (Independent Unit) REMQ8P7Y1B+REMQ10P7Y1B+REMQ16P7Y1B REMQ8P7Y1B+REMQ12P7Y1B+REMQ16P7Y1B kcal / h 82,600 87,700 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 328,000 348,000 96.0 ★ 2 Cooling Capacity (19.0°CWB) 95.4 kcal / h 92,000 97,200 ★...
  • Page 29 SiBE37-701_B Specifications Model Name (Combination Unit) REYQ38P7Y1B REYQ40P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ12P7Y1B+REMQ16P7Y1B REMQ12P7Y1B+REMQ12P7Y1B+REMQ16P7Y1B kcal / h 92,900 97,200 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 368,000 386,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 102,000 108,000 ★ 3 Heating Capacity Btu / h 406,000...
  • Page 30 Specifications SiBE37-701_B Model Name (Combination Unit) REYQ42P7Y1B REYQ44P7Y1B Model Name (Independent Unit) REMQ10P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B REMQ12P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B kcal / h 102,000 108,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 406,000 427,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 114,000 119,000 ★ 3 Heating Capacity Btu / h 450,000...
  • Page 31 SiBE37-701_B Specifications Model Name (Combination Unit) REYQ46P7Y1B REYQ48P7Y1B Model Name (Independent Unit) REMQ14P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B REMQ16P7Y1B+REMQ16P7Y1B+REMQ16P7Y1B kcal / h 113,000 117,000 ★ 1 Cooling Capacity (19.5°CWB) Btu / h 447,000 464,000 ★ 2 Cooling Capacity (19.0°CWB) kcal / h 124,000 129,000 ★ 3 Heating Capacity Btu / h 495,000...

  • Page 32: Indoor Units

    Specifications SiBE37-701_B Indoor Units Roundflow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXFQ20P8VEB FXFQ25P8VEB FXFQ32P8VEB FXFQ40P8VEB FXFQ50P8VEB Capacity Cooling Heating Power Input Cooling 0.053 0.053 0.053 0.063 0.083 (50Hz) Heating 0.045 0.045 0.045 0.055 0.067 Power Input Cooling 0.052 0.052 0.052 0.062 0.082 (60Hz)
  • Page 33 SiBE37-701_B Specifications Roundflow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXFQ20P8VEB FXFQ25P8VEB FXFQ32P8VEB FXFQ40P8VEB FXFQ50P8VEB Standard Accessories Installation and operation manual Drain hose Washer for hanging bracket Screws Sealing pads Insulation for fitting Clamp for drain hose Installation guide Drain sealing pad Notes The sound pressure values are mentioned for a unit installed with rear suction The sound power level is an absolute value indicating the power which a sound source generates.
  • Page 34 Specifications SiBE37-701_B Roundflow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXFQ63P8VEB FXFQ80P8VEB FXFQ100P8VEB FXFQ125P8VEB Capacity Cooling 11.2 14.0 Heating 10.0 12.5 16.0 Power Input Cooling 0.095 0.120 0.173 0.258 (50Hz) Heating 0.114 0.108 0.176 0.246 Power Input Cooling 0.094 0.119 0.172 0.257 (60Hz) Heating...
  • Page 35 SiBE37-701_B Specifications 1-1 TECHNICAL SPECIFICATIONS FXFQ63P8VEB FXFQ80P8VEB FXFQ100P8VEB FXFQ125P8VEB Standard Accessories Installation and operation manual Drain hose Washer for hanging bracket Screws Sealing pads Insulation for fitting Clamp for drain hose Installation guide Drain sealing pad Notes The sound pressure values are mentioned for a unit installed with rear suction The sound power level is an absolute value indicating the power which a sound source generates.
  • Page 36 Specifications SiBE37-701_B 600×600 4-Way Blow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXZQ20M9V1B FXZQ25M9V1B FXZQ32M9V1B FXZQ40M9V1B FXZQ50M9V1B Capacity Cooling Heating Power Input Cooling 0.073 0.073 0.076 0.089 0.115 (50Hz) Heating 0.064 0.064 0.068 0.080 0.107 Casing Material Galvanised steel Dimensions Unit Height Width Depth...
  • Page 37 SiBE37-701_B Specifications 1-2 ELECTRICAL SPECIFICATIONS FXZQ20M9V1B FXZQ25M9V1B FXZQ32M9V1B FXZQ40M9V1B FXZQ50M9V1B Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 38 Specifications SiBE37-701_B 2-Way Blow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXCQ20M8V3B FXCQ25M8V3B FXCQ32M8V3B FXCQ40M8V3B FXCQ50M8V3B Nominal Cooling 2.20 2.80 3.60 4.50 5.60 Capacity Heating 2.50 3.20 4.00 5.00 6.30 Power input Cooling 0.077 0.092 0.092 0.130 0.130 (Nominal) Heating 0.044 0.059 0.059 0.097...
  • Page 39 SiBE37-701_B Specifications 2-Way Blow Ceiling Mounted Cassette 1-1 TECHNICAL SPECIFICATIONS FXCQ20M8V3B FXCQ25M8V3B FXCQ32M8V3B FXCQ40M8V3B FXCQ50M8V3B Air Filter Resin net with mold resistance Air direction control Up and downwards Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices PCB fuse Fan motor thermal fuse...
  • Page 40 Specifications SiBE37-701_B 1-1 TECHNICAL SPECIFICATIONS FXCQ63M8V3B FXCQ80M8V3B FXCQ125M8V3B Nominal Cooling 7.10 9.00 14.00 Capacity Heating 8.00 10.00 16.00 Power input Cooling 0.161 0.209 0.256 (Nominal) Heating 0.126 0.176 0.223 Casing Colour Non painted Material Galvanised steel Dimensions Packing Height Width 1460 1808 1808...
  • Page 41 SiBE37-701_B Specifications 1-1 TECHNICAL SPECIFICATIONS FXCQ63M8V3B FXCQ80M8V3B FXCQ125M8V3B Air Filter Resin net with mold resistance Air direction control Up and downwards Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices PCB fuse Fan motor thermal fuse Fan motor thermal protector Fan motor thermal protector Drain pump fuse...
  • Page 42 Specifications SiBE37-701_B 1-2 ELECTRICAL SPECIFICATIONS FXCQ20M8V3B FXCQ25M8V3B FXCQ32M8V3B FXCQ40M8V3B FXCQ50M8V3B Power Name Supply Phase Frequency Voltage Current Minimum circuit amps 0.50 0.50 0.50 0.80 0.80 (MCA) Maximum fuse amps 16.00 16.00 16.00 16.00 16.00 (MFA) Full load amps (FLA) 0.40 0.40 0.40 0.60...
  • Page 43 SiBE37-701_B Specifications Ceiling Mounted Corner Cassette 1-1 TECHNICAL SPECIFICATIONS FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE FXKQ63MAVE Nominal Cooling 2.80 3.60 4.50 7.10 Capacity Heating 3.20 4.00 5.00 8.00 Power input Cooling 0.066 0.066 0.076 0.105 (50Hz) Heating 0.046 0.046 0.056 0.085 Power input Cooling 0.069 0.069...
  • Page 44 Specifications SiBE37-701_B 1-2 ELECTRICAL SPECIFICATIONS FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE FXKQ63MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 0.30 0.30 0.30 0.50 (MCA) Maximum fuse amps 15.00 (MFA) Full load amps (FLA) 0.20 0.20 0.20 0.40 Voltage Minimum -10% range Maximum...
  • Page 45 SiBE37-701_B Specifications Slim Concealed Ceiling Unit (with Drain Pump) 1-1 TECHNICAL SPECIFICATIONS FXDQ20PBVE FXDQ25PBVE FXDQ32PBVE Capacity Cooling Heating Power Input Cooling 0.086 0.086 0.089 (50Hz) Heating 0.067 0.067 0.070 Power Input Cooling 0.092 0.092 0.095 (60Hz) Heating 0.073 0.073 0.076 Casing Material Galvanised steel plate...
  • Page 46 Specifications SiBE37-701_B Slim Concealed Ceiling Unit (with Drain Pump) 1-2 ELECTRICAL SPECIFICATIONS FXDQ20PBVE FXDQ25PBVE FXDQ32PBVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or...
  • Page 47 SiBE37-701_B Specifications Slim Concealed Ceiling Unit (with Drain Pump) 1-1 TECHNICAL SPECIFICATIONS FXDQ40NBVE FXDQ50NBVE FXDQ63NBVE Capacity Cooling Heating Power Input Cooling 0.160 0.165 0.181 (50Hz) Heating 0.147 0.152 0.168 Power Input Cooling 0.182 0.185 0.192 (60Hz) Heating 0.168 0.170 0.179 Casing Material Galvanised steel plate...
  • Page 48 Specifications SiBE37-701_B 1-2 ELECTRICAL SPECIFICATIONS FXDQ40NBVE FXDQ50NBVE FXDQ63NBVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 49 SiBE37-701_B Specifications Concealed Ceiling Unit (Small) 1-1 TECHNICAL SPECIFICATIONS FXDQ20M9V3B FXDQ25M9V3B Capacity Cooling Heating Power Input Cooling 0.050 (50Hz) Heating 0.050 Casing Colour Non painted Material Galvanised steel Dimensions Packing Height Width Depth Unit Height Width Depth Weight Unit Packed Unit Required Ceiling Void >250 Heat...
  • Page 50 Specifications SiBE37-701_B 1-2 ELECTRICAL SPECIFICATIONS FXDQ20M9V3B FXDQ25M9V3B Power Name Supply Phase Frequency Voltage Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 51 SiBE37-701_B Specifications Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXSQ20P7VEB FXSQ25P7VEB FXSQ32P7VEB FXSQ40P7VEB FXSQ50P7VEB Capacity Cooling Heating Power Input Cooling 0.073 0.073 0.079 0.192 0.192 (50Hz) Heating 0.061 0.061 0.067 0.180 0.180 Power Input Cooling 0.073 0.073 0.079 0.192 0.192 (60Hz) Heating 0.061 0.061...
  • Page 52 Specifications SiBE37-701_B Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXSQ20P7VEB FXSQ25P7VEB FXSQ32P7VEB FXSQ40P7VEB FXSQ50P7VEB Decoration Model BYBS32DJW1 BYBS32DJW1 BYBS32DJW1 BYBS45DJW1 BYBS45DJW1 Panel Colour White (10Y9/0,5) Dimensions Height Width Depth Weight Drain-up Height Air Filter Resin net with mold resistance Refrigerant control Electronic expansion valve Safety devices PCB fuse...
  • Page 53 SiBE37-701_B Specifications Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXSQ63P7VEB FXSQ80P7VEB FXSQ100P7VEB FXSQ125P7VEB Capacity Cooling 11.2 14.0 Heating 10.0 12.5 16.0 Power Input Cooling 0.142 0.163 0.247 0.303 (50Hz) Heating 0.130 0.151 0.235 0.291 Power Input Cooling 0.142 0.163 0.247 0.303 (60Hz) Heating 0.130...
  • Page 54 Specifications SiBE37-701_B Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXSQ63P7VEB FXSQ80P7VEB FXSQ100P7VEB FXSQ125P7VEB Piping Liquid Type Flare connection connections (OD) Diameter 9.52 Type Flare connection Diameter 15.9 Drain Diameter VP25 (O.D. 32 / I.D. 25) Heat Insulation Both liquid and gas pipes Decoration Model BYBS71DJW1...
  • Page 55 SiBE37-701_B Specifications Concealed Ceiling Unit 1-1 TECHNICAL SPECIFICATIONS FXMQ20PVE FXMQ25PVE FXMQ32PVE FXMQ40PVE FXMQ50PVE Capacity Cooling Heating Power Input Cooling 0.081 0.081 0.085 0.194 0.215 (50Hz) Heating 0.069 0.069 0.073 0.182 0.203 Casing Material Galvanised steel plate Dimensions Unit Height Width 1,000 Depth Weight...
  • Page 56 Specifications SiBE37-701_B 1-1 TECHNICAL SPECIFICATIONS FXMQ63PVE FXMQ80PVE FXMQ100PVE FXMQ125PVE FXMQ140PVE Capacity Cooling 11.2 14.0 16.0 Heating 10.0 12.5 16.0 18.0 Power Input Cooling 0.230 0.298 0.376 0.461 0.461 (50Hz) Heating 0.218 0.286 0.364 0.449 0.449 Casing Material Galvanised steel plate Dimensions Unit Height...
  • Page 57 SiBE37-701_B Specifications 1-2 ELECTRICAL SPECIFICATIONS FXMQ20PVE FXMQ25PVE FXMQ32PVE FXMQ40PVE FXMQ50PVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 58 Specifications SiBE37-701_B Concealed Ceiling Unit (Large) 1-1 TECHNICAL SPECIFICATIONS FXMQ200MAVE FXMQ250MAVE Capacity Cooling 22.4 28.0 Heating 25.0 31.5 Power Input Cooling 1.294 1.465 (50Hz) Heating 1.294 1.465 Power Input Cooling 1.490 1.684 (60Hz) Heating 1.490 1.684 Casing Material Galvanised steel Dimensions Unit Height...
  • Page 59 SiBE37-701_B Specifications 1-2 TECHNICAL SPECIFICATIONS FXMQ200MAVE FXMQ250MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 60 Specifications SiBE37-701_B Ceiling Suspended Unit 1-1 TECHNICAL SPECIFICATIONS FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE Capacity Cooling 11.2 Heating 12.5 Power Input Cooling 0.111 0.115 0.135 (50Hz) Heating 0.111 0.115 0.135 Power Input Cooling 0.142 0.145 0.199 (60Hz) Heating 0.142 0.145 0.199 Casing Colour White (10Y9/0,5) Dimensions Unit...
  • Page 61 SiBE37-701_B Specifications 1-2 ELECTRICAL SPECIFICATIONS FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 62 Specifications SiBE37-701_B Wall Mounted Unit 1-1 TECHNICAL SPECIFICATIONS FXAQ20PV1 FXAQ25PV1 FXAQ32PV1 FXAQ40PV1 FXAQ50PV1 FXAQ63PV1 Capacity Cooling Heating Power Input Cooling 0.016 0.022 0.027 0.020 0.027 0.050 (50Hz) Heating 0.024 0.027 0.032 0.020 0.032 0.060 Power Input Cooling 0.016 0.022 0.027 0.020 0.027 0.050...
  • Page 63 SiBE37-701_B Specifications Wall Mounted Unit 1-2 ELECTRICAL SPECIFICATIONS FXAQ20PV1 FXAQ25PV1 FXAQ32PV1 FXAQ40PV1 FXAQ50PV1 FXAQ63PV1 Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits.
  • Page 64 Specifications SiBE37-701_B Floor Standing Unit 1-1 TECHNICAL SPECIFICATIONS FXLQ20MAVE FXLQ25MAVE FXLQ32MAVE FXLQ40MAVE FXLQ50MAVE FXLQ63MAVE Nominal Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Capacity Heating 2.50 3.20 4.00 5.00 6.30 8.00 Power input Cooling 0.049 0.049 0.090 0.090 0.110 0.110 (50Hz) Heating 0.049 0.049...
  • Page 65 SiBE37-701_B Specifications Floor Standing Unit 1-2 ELECTRICAL SPECIFICATIONS FXLQ20MAVE FXLQ25MAVE FXLQ32MAVE FXLQ40MAVE FXLQ50MAVE FXLQ63MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps 0.30 0.30 0.60 0.60 0.60 0.60 (MCA) Maximum fuse amps 15.00 (MFA) Full load amps (FLA) 0.20 0.20 0.50...
  • Page 66 Specifications SiBE37-701_B Concealed Floor Standing Unit 1-1 TECHNICAL SPECIFICATIONS FXNQ20MAVE FXNQ25MAVE FXNQ32MAVE FXNQ40MAVE FXNQ50MAVE FXNQ63MAVE Capacity Cooling 2.20 2.80 3.60 4.50 5.60 7.10 Heating 2.50 3.20 4.00 5.00 6.30 8.00 Power Input Cooling 0.049 0.049 0.090 0.090 0.110 0.110 (50Hz) Heating 0.049 0.049...
  • Page 67 SiBE37-701_B Specifications Concealed Floor Standing Unit 1-2 ELECTRICAL SPECIFICATIONS FXNQ20MAVE FXNQ25MAVE FXNQ32MAVE FXNQ40MAVE FXNQ50MAVE FXNQ63MAVE Power Name Supply Phase Frequency Voltage 220-240 Current Minimum circuit amps (MCA) Maximum fuse amps (MFA) Full load amps (FLA) Voltage Minimum -10% range Maximum +10% Notes Voltage range : units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or...

  • Page 68: Bs Units

    Specifications SiBE37-701_B BS Units Model BSV4Q100PV1 BSV6Q100PV1 Power Supply 1 Phase 50Hz 200-240V 1 Phase 50Hz 200-240V Total capacity index of connectable indoor 400 or less 600 or less units Capacity index of connectable indoor units 100 or less per branch No.

  • Page 69: Part 3 Refrigerant Circuit

    SiBE37-701_B Part 3 Refrigerant Circuit 1. Refrigerant Circuit .................59 1.1 REYQ8P, 10P, 12P ................59 1.2 REYQ14P, 16P ..................61 1.3 REMQ8P (Multi 8HP) ................63 1.4 REMQ10P, 12P (Multi 10, 12HP)............65 1.5 REMQ14P, 16P (Multi 14, 16HP)............67 1.6 BS Unit Functional Parts ................69 1.7 Indoor Units ....................70 2.

  • Page 70: Refrigerant Circuit

    Refrigerant Circuit SiBE37-701_B 1. Refrigerant Circuit REYQ8P, 10P, 12P No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only.
  • Page 71 SiBE37-701_B Refrigerant Circuit REYQ8P, 10P, 12P (8HP, 10HP, 12HP Single Type) (INV Unit + STD Unit) Liquid Subcooling Heat Exchanger 2 (50) Pipe Left (26) Stop Valve (48) (11) Heat Exchanger 2 (45) (46) (47) (18) Dual Pressure (19) Gas Pipe Stop Valve (23)

  • Page 72: Reyq14P, 16P

    Refrigerant Circuit SiBE37-701_B REYQ14P, 16P No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV1) Inverter compressor is operated on frequencies between 52Hz and 266Hz by using the inverter. The number of operating steps is as follows. REYQ14P or 16P : 26 step Standard compressor 1 (INV2) Because the system is an air heat exchange type, the fan is operated at 9-step rotation Inverter fan...
  • Page 73 SiBE37-701_B Refrigerant Circuit REYQ14P, 16P (14HP, 16HP Single Type) (INV Unit × 2) Liquid Subcooling Heat Exchanger 2 (50) Pipe Left (26) Stop Valve (48) (11) Heat Exchanger 2 (46) (45) (47) (18) Dual Pressure (19) Gas Pipe Stop Valve (23) S2PH (33)

  • Page 74: Remq8P (Multi 8Hp)

    Refrigerant Circuit SiBE37-701_B REMQ8P (Multi 8HP) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52Hz and 210Hz by using Inverter compressor (INV) the inverter. Compressor operation steps : Refer to page 111~115. Because the system is an air heat exchange type, the fan is operated at 9-step rotation Inverter fan speed by using the inverter.
  • Page 75 SiBE37-701_B Refrigerant Circuit REMQ8P (40) Stop Valve (39) Liquid Pipe Liquid Pipe (24) (38) (35) (36) (22) (37) (15) (30) (17) S1NPH (23) Stop Valve Equalizing Pipe (11) (10) (16) Stop Valve Dual Pressure Gas Pipe (19) S1PH (25) (32) (14) (12) (13)

  • Page 76: Remq10P, 12P (Multi 10, 12Hp)

    Refrigerant Circuit SiBE37-701_B REMQ10P, 12P (Multi 10, 12HP) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only.
  • Page 77 SiBE37-701_B Refrigerant Circuit REMQ10P, 12P (40) Stop Valve (39) Liquid Pipe (24) (38) (22) (35) (36) (37) (15) (23) S1NPH (17) Stop Valve (11) (30) Equalizing Pipe (10) (16) Stop Valve Dual Pressure Gas Pipe (25) (19) S1PH (20) S2PH (32) (33) (12)

  • Page 78: Remq14P, 16P (Multi 14, 16Hp)

    Refrigerant Circuit SiBE37-701_B REMQ14P, 16P (Multi 14, 16HP) No. in refrigerant Symbol Name Major Function system diagram Inverter compressor (INV) Inverter compressor is operated on frequencies between 52Hz and 210Hz by using the inverter, while Standard compressor is operated with commercial power supply only. The number of Standard compressor 1 (STD1) operating steps is as follows when Inverter compressor is operated in combination with Standard compressor.
  • Page 79 SiBE37-701_B Refrigerant Circuit REMQ14P, 16P (40) Stop Valve (39) Liquid Pipe (24) (38) (22) (35) (36) (37) (15) (17) (30) S1NPH Stop Valve (23) Equalizing Pipe (11) (10) Stop Valve (16) Dual Pressure Gas Pipe (19) S1PH (20) (21) S2PH S3PH (32) (25)

  • Page 80: Bs Unit Functional Parts

    Refrigerant Circuit SiBE37-701_B BS Unit Functional Parts BSV4Q100PV1, 6Q100PV1 Name Symbol Function Electronic expansion valve (EVH) Opens while in heating operation or all indoor units are in cooling operation. (Max : 760pls) Electronic expansion valve (EVL) Opens while in cooling operation. (Max : 760pls) Electronic expansion valve (EVHS) Opens while in heating operation or all indoor units are in cooling operation.

  • Page 81: Indoor Units

    SiBE37-701_B Refrigerant Circuit Indoor Units FXCQ, FXFQ, FXZQ, FXKQ, FXDQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas-side Piping Liquid-side Piping Electronic Filter Filter Expansion Valve Name Symbol Function Used to control superheated degree of gas when Electronic cooling and subcooled degree when heating. (Max. expansion valve 2000 pls) Suction air...

  • Page 82: Functional Parts Layout

    Functional Parts Layout SiBE37-701_B 2. Functional Parts Layout REYQ8P, 10P, 12P Plan (10) SOLENOID VALVE (18) FOUR WAY VALVE (19) FOUR WAY VALVE (17) FOUR WAY VALVE (PIPE) (BYPASS 1) (HEAT EXC. 2) (HEAT EXC. 1) (Y8S) (Y5S) (Y2S) (Y9S) (13) SOLENOID VALVE (RMTL) (Y3S)

  • Page 83: Reyq14P, 16P

    SiBE37-701_B Functional Parts Layout REYQ14P, 16P Plan (10) SOLENOID VALVE (17) FOUR WAY VALVE (BYPASS 1) (HEAT EXC. 1) (19) FOUR WAY VALVE (Y5S) (Y2S) (PIPE) (13) SOLENOID VALVE (Y8S) (RMTL) (18) FOUR WAY VALVE (Y3S) (HEAT EXC. 2) (14) SOLENOID VALVE (Y9S) (RMTG) (11) SOLENOID VALVE...

  • Page 84: Remq8P

    Functional Parts Layout SiBE37-701_B REMQ8P Plan (31) THERMISTOR (10) SOLENOID VALVE (SUCTION) (HOT GAS) (R8T) (Y5S) (25) REFRIGERANT REGULATOR (11) SOLENOID VALVE (RMTL) (Y4S) (7) COIL FOR EXPANSION VALVE (SUBCOOLING) (Y3E) (8) COIL FOR EXPANSION (9) SOLENOID VALVE (EV BYPASS) (18) PRESSURE SENSOR VALVE (CHARGE) SECTION M-M...

  • Page 85: Remq10P, 12P

    SiBE37-701_B Functional Parts Layout REMQ10P, 12P Plan (10) SOLENOID VALVE (31) THERMISTOR (SUCTION) (HOT GAS) (Y5S) (R8T) (25) REFRIGERANT REGULATOR (11) SOLENOID VALVE (RMTL) (Y4S) (7) COIL FOR EXPANSION VALVE (8) COIL FOR EXPANSION (SUBCOOLING) (18) PRESSURE SENSOR VALVE (CHARGE) SECTION M-M (LOW PRESS.) (Y3E)

  • Page 86: Remq14P, 16P

    Functional Parts Layout SiBE37-701_B REMQ14P, 16P Plan (31) THERMISTOR (10) SOLENOID VALVE (SUCTION) (HOT GAS) (R8T) (Y5S) (25) REFRIGERANT REGULATOR (19) PRESSURE SWITCH (HIGH PRESSURE PROTECTION) (S1PH) (11) SOLENOID VALVE (RMTL) (20) PRESSURE SWITCH (Y4S) (HIGH PRESSURE PROTECTION) (7) COIL FOR EXPANSION VALVE (S2PH) (SUBCOOLING) (21) PRESSURE SWITCH...

  • Page 87: Refrigerant Flow For Each Operation Mode

    SiBE37-701_B Refrigerant Flow for Each Operation Mode 3. Refrigerant Flow for Each Operation Mode REYQ8P, 10P, 12P Cooling Operation Refrigerant Circuit...
  • Page 88 Refrigerant Flow for Each Operation Mode SiBE37-701_B Heating Operation Refrigerant Circuit...
  • Page 89 SiBE37-701_B Refrigerant Flow for Each Operation Mode Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 90 Refrigerant Flow for Each Operation Mode SiBE37-701_B Cooling Oil Return Operation Refrigerant Circuit...
  • Page 91 SiBE37-701_B Refrigerant Flow for Each Operation Mode Heating Oil Return Operation Refrigerant Circuit...
  • Page 92 Refrigerant Flow for Each Operation Mode SiBE37-701_B Oil Return Operation at Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 93 SiBE37-701_B Refrigerant Flow for Each Operation Mode Partial Defrosting 1 (Defrosting in the Right Unit) Refrigerant Circuit...
  • Page 94 Refrigerant Flow for Each Operation Mode SiBE37-701_B Partial Defrosting 2 (Defrosting in the Left Unit) Refrigerant Circuit...
  • Page 95 SiBE37-701_B Refrigerant Flow for Each Operation Mode REYQ14P, 16P Cooling Operation Refrigerant Circuit...
  • Page 96 Refrigerant Flow for Each Operation Mode SiBE37-701_B Heating Operation Refrigerant Circuit...
  • Page 97 SiBE37-701_B Refrigerant Flow for Each Operation Mode Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 98 Refrigerant Flow for Each Operation Mode SiBE37-701_B Cooling Oil Return Operation Refrigerant Circuit...
  • Page 99 SiBE37-701_B Refrigerant Flow for Each Operation Mode Heating Oil Return Operation Refrigerant Circuit...
  • Page 100 Refrigerant Flow for Each Operation Mode SiBE37-701_B Oil Return Operation at Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 101 SiBE37-701_B Refrigerant Flow for Each Operation Mode Partial Defrosting 1 (Defrosting in the Right Unit) Refrigerant Circuit...
  • Page 102 Refrigerant Flow for Each Operation Mode SiBE37-701_B Partial Defrosting 2 (Defrosting in the Left Unit) Refrigerant Circuit...
  • Page 103 SiBE37-701_B Refrigerant Flow for Each Operation Mode REYQ18P, 20P Cooling Operation Refrigerant Circuit...
  • Page 104 Refrigerant Flow for Each Operation Mode SiBE37-701_B Heating Operation Refrigerant Circuit...
  • Page 105 SiBE37-701_B Refrigerant Flow for Each Operation Mode Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 106 Refrigerant Flow for Each Operation Mode SiBE37-701_B Cooling Oil Return Operation Refrigerant Circuit...
  • Page 107 SiBE37-701_B Refrigerant Flow for Each Operation Mode Heating Oil Return Operation Refrigerant Circuit...
  • Page 108 Refrigerant Flow for Each Operation Mode SiBE37-701_B Oil Return Operation at Simultaneous Cooling / Heating Operation Refrigerant Circuit...
  • Page 109 SiBE37-701_B Refrigerant Flow for Each Operation Mode Partial Defrosting 1 (Defrosting in the Right Unit) Refrigerant Circuit...
  • Page 110 Refrigerant Flow for Each Operation Mode SiBE37-701_B Partial Defrosting 2 (Defrosting in the Left Unit) Refrigerant Circuit...
  • Page 111 SiBE37-701_B Refrigerant Flow for Each Operation Mode Operation of refrigerant regulator 1. Recovery of refrigerant Surplus refrigerant is recovered to refrigerant regulator by opening of SVL and SVG when the indoor unit load is small. Liquid Pipe Right Pressure regulating valve 20SA S1NPH Equalizing...
  • Page 112 Refrigerant Flow for Each Operation Mode SiBE37-701_B Pressure equalizing when switching operation cooling / heating 1. When switching operation from to cooling to heating First, the electronic expansion valves for EVHS, EVH, EVL and EVLS of the indoor unit will be closed.
  • Page 113 SiBE37-701_B Refrigerant Flow for Each Operation Mode 2. When switching operation from heating to cooling First, the electronic expansion valve and the solenoid valve for EVHS, EVH, EVL and EVLS of the indoor unit will be closed. Next, open the EVLS, and it makes to balance the system pressure. Finally, EVL and EVLS are opened and the electronic expansion valve of the indoor unit is opened to start the operation as a cooling circuit.

  • Page 114: Part 4 Function

    SiBE37-701_B Part 4 Function 1. Function General.................104 1.1 Symbol ....................104 1.2 Operation Mode..................106 2. Basic Control..................107 2.1 Normal Operation .................107 2.2 Compressor PI Control.................108 2.3 Electronic Expansion Valve PI Control..........116 2.4 Step Control of Outdoor Unit Fans ............116 2.5 Outdoor Unit Fan Control in Cooling Operation ........117 2.6 Heat Exchanger Control ...............118 3.

  • Page 115: Function General

    SiBE37-701_B Function General 1. Function General Symbol Electric symbol Symbol Description or function REYQ8~16P REMQ8~16P Y2S (Heat exchanger1) 20SA Four way valve (Heat exchanger switch) Y9S (Heat exchanger2) 20SB Four way valve (High/low pressure gas pipe switch) – – Discharge pipe superheated degree DSHi –...
  • Page 116 Function General SiBE37-701_B Electric symbol Symbol Description or function REYQ8~16P REMQ8~16P R1T (A1P) R1T (A1P) Outdoor air temperature R8T (Suction pipe1) Suction pipe temperature R10T (Suction pipe2) (Deicer1) Heat exchanger outlet temperature at cooling R12T (Deicer2) R2T (Gas pipe1) Heat exchanger gas pipe temperature R11T (Gas pipe2) R7T (Liquid...

  • Page 117: Operation Mode

    SiBE37-701_B Function General 1.2 Operation Mode Thermostat ON Operation in stop mode Indoor unit stop or thermostat Operation Pressure equalization prior to startup mode changeover Restart standby Thermostat ON Malfunction/ Rotation Standby Malfunction/ Standby Indoor unit stop or thermostat OFF Pump down Cooling Heating...

  • Page 118: Basic Control

    Basic Control SiBE37-701_B 2. Basic Control Normal Operation 2.1.1 List of Functions in Normal Operation (Electric Function of Functional Part Symbol) Part Name Symbol Normal Simultaneous Normal Cooling Normal Heating REYQ REMQ Cooling / Heating M1C M1C PI control, High PI control, High PI control, High Compressor 1...

  • Page 119: Compressor Pi Control

    SiBE37-701_B Basic Control Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to Te : Low pressure equivalent saturation achieve target value (TeS).
  • Page 120 Basic Control SiBE37-701_B Operating Priority and Rotation of Compressors Each compressor operates in the following order of priority. INV: Inverter compressor In the case of multi-outdoor-unit system, each compressor operates in any of Pattern 1 through Pattern 3 according to the rotation of outdoor units. STD1: Standard compressor 1 STD2: Standard compressor 2 Pattern 1...
  • Page 121 SiBE37-701_B Basic Control REYQ38P, 40P No. 1 No. 4 No. 2 No. 5 No. 3 No. 6 No. 7 No. 3 No. 6 No. 1 No. 4 No. 2 No. 5 No. 7 No. 2 No. 5 No. 3 No. 6 No.
  • Page 122 Basic Control SiBE37-701_B Compressor Step Control Compressor operations vary with the following steps according to information in "2.2 Compressor PI Control". Furthermore, the operating priority of compressors is subject to information in " Operating Priority and Rotation of Compressors". Single unit installation REYQ14PY1, 16PY1 REYQ8PY1, 10PY1, 12PY1 STEP...
  • Page 123 SiBE37-701_B Basic Control Two-unit multi system REYQ18PY1, 20PY1 (8+10/12HP) REYQ22PY1, 24PY1 (10/12+12HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 STEP unit 1 unit 2 STEP unit 1 unit 2 STEP unit 1...
  • Page 124 Basic Control SiBE37-701_B Three-unit multi system REYQ26PY1, 28PY1 (10/12+16HP) REYQ 30PY1, 32PY1 (14/16+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 STEP unit 1 unit 2 STEP unit 1 unit 2 STEP...
  • Page 125 SiBE37-701_B Basic Control REYQ34PY1, 36PY1 (8+10/12+16HP) REYQ38PY1, 40PY1 (10/12+12+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3...
  • Page 126 Basic Control SiBE37-701_B REYQ42PY1, 44PY1 (10/12+16+16HP) REYQ46PY1, 48PY1 (14/16+16+16HP) (To increase Step No.) (To decrease Step No.) (To increase Step No.) (To decrease Step No.) STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3 STEP unit 1 unit 2 unit 3...

  • Page 127: Electronic Expansion Valve Pi Control

    SiBE37-701_B Basic Control Electronic Expansion Valve PI Control Main electronic expansion valve EVM control When the outdoor unit heat exchanging is performed via the evaporator (20SA is set to ON), this function is used to exert PI control on the electronic expansion valve (Y1E or Y3E) so that the evaporator outlet superheated degree (SH) will become constant.

  • Page 128: Outdoor Unit Fan Control In Cooling Operation

    Basic Control SiBE37-701_B Outdoor Unit Fan Control in Cooling Operation While in cooling operation, if the outdoor temperature is low, this mode provides high-pressure control using the outdoor unit fan to retain appropriate liquid pressure, thus ensuring refrigerant circulation rate to be supplied to indoor units. Fan step 9 Pc>3.28MPa PI control...

  • Page 129: Heat Exchanger Control

    SiBE37-701_B Basic Control Heat Exchanger Control While in heating or cool/heat simultaneous operation, ensure target condensing and evaporating temperature by changing over the air heat exchange of outdoor unit to the evaporator or the condenser in response to loads. [Single system] Outdoor unit Note 1.

  • Page 130: Special Control

    Special Control SiBE37-701_B 3. Special Control Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.
  • Page 131 SiBE37-701_B Special Control 3.1.2 Startup Control in Heating Operation Elect. Control Startup control symbol Actuator Symbol before startup STEP 1 STEP 2 REYQ REMQ Compressor 1 M1C M1C 52Hz+OFF+OFF+2 STEP / 20 sec. Compressor 2 — M2C M2C 0 Hz 52 Hz+OFF+OFF (Until it reaches Compressor 3...

  • Page 132: Large Capacity Start Up Control (Heating)

    Special Control SiBE37-701_B Large Capacity Start Up Control (Heating) For startup, oil return operation, or setup after defrosting, start up multiple compressors at a high speed according to the conditions of indoor units with thermostat ON, thus maximizing the equipment capacity. Pressure Number of compressors...

  • Page 133: Oil Return Operation

    SiBE37-701_B Special Control Oil Return Operation This function is used to recover refrigerant oil that flows out from the compressor to the system side by conducting oil return operation in order to prevent the compressor from running out of refrigerant oil. 3.3.1 Cooling Oil Return Operation [Start conditions] Referring to the following conditions, start cooling oil return operation.
  • Page 134 Special Control SiBE37-701_B Cooling indoor unit actuator Oil return operation Thermo. ON unit Remote controller setting Unit not in operation Thermo. OFF unit Remote controller setting Thermo. ON unit Normal opening degree Electronic expansion valve Unit not in operation 192pls Thermo.
  • Page 135 SiBE37-701_B Special Control 3.3.2 Heating Oil Return Operation (including cooling / heating simultaneous operation) [Start conditions] Referring to the following conditions, start heating oil return operation. • Integral oil rise rate is reached to specified level. • When cumulative compressor operating time exceeds 8 hours (2 hours when the power supply turns ON for the first time) Furthermore, the integral oil rise rate is calculated by Tc, Te, and compressor loads.
  • Page 136 Special Control SiBE37-701_B Cooling indoor unit actuator Oil return operation Thermo. ON unit Remote controller setting Unit not in operation Thermo. OFF unit Remote controller setting Thermo. ON unit Normal opening degree Electronic expansion valve Unit not in operation 192pls Thermo.

  • Page 137: Defrost Operation

    SiBE37-701_B Special Control Defrost Operation [Start conditions] Referring to the following conditions, start defrost operation. • When there is a decrease in the coefficient of heat transfer of outdoor unit heat exchanger • When there is a drop in the temperature of outdoor unit heat exchanger outlet (Tb) &...
  • Page 138 Special Control SiBE37-701_B Elect. symbol Evaporating outdoor unit actuator Defrost operation Operation after defrost Symbol REYQ REMQ Upper limit 124Hz (STD Holds) Compressor 1 M1C REYQ8•10•12P: 232Hz+ON REYP400•480A: 232Hz+232Hz REYQ14•16P: 232Hz+232Hz REMP224A: 210Hz Compressor 2 — REMQ8P: 210Hz REMP280•335A: 210Hz+ON REMQ10•12P: 210Hz+ON REMP400•450A: REMQ14•16P: 210Hz+ON+ON...

  • Page 139: Pump Down Residual Operation

    SiBE37-701_B Special Control Pump down Residual Operation 3.5.1 Pump down Residual Operation in Cooling Operation If the liquid refrigerant stays in the Evaporator at the startup of a compressor, this liquid refrigerant enters the compressor, thus resulting in diluted oil in the compressor and then degraded lubrication performance. Consequently, in order to recover the refrigerant in the Evaporator while the compressor stops, the pump-down residual operation is conducted.
  • Page 140 Special Control SiBE37-701_B 3.5.2 Pump-down Residual Operation in Heating Operation and Simultaneous Cooling / Heating Operation Elect. symbol Actuator Symbol Master unit operation Slave unit operation REYQ REMQ Compressor 1 Compressor 2 — 124 Hz+OFF+OFF Compressor 3 Outdoor unit fan 1 —...

  • Page 141: Standby

    SiBE37-701_B Special Control Standby 3.6.1 Restart Standby Used to forcedly stop the compressor for a period of 3 minutes, in order to prevent the frequent ON/OFF of the compressor and equalize the pressure within the refrigerant system. Elect. Operation symbol Actuator Symbol REYQ8~16P...

  • Page 142: Stopping Operation

    Special Control SiBE37-701_B Stopping Operation 3.7.1 When System is in Stop Mode (Normal operation stop) This mode is used to define actuator operations when the system stops. Elect. Operation symbol Actuator Symbol REYQ8~16P REMQ8P REMQ10•12P REMQ14•16P REYQ REMQ Compressor 1 —...

  • Page 143: Protection Control

    SiBE37-701_B Protection Control 4. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. [In cooling operation] ★...
  • Page 144 Protection Control SiBE37-701_B [Heating Operation and Simultaneous Cooling / Heating Operation] ★ The following control is performed in the entire system. Pc_max indicates the maximum value within the system. Normal Operation Pc_max>3.31MPa Pc_max<2.94MPa When high pressure is limited Compressor step: 7 STEP down Pc_max •...

  • Page 145: Low Pressure Protection Control

    SiBE37-701_B Protection Control Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] ★ Because of common low pressure, the following control is performed in the system. Pe_min indicates the minimum value within the system.
  • Page 146 Protection Control SiBE37-701_B [In heating operation and Simultaneous Cooling / Heating Operation] ★ The following control is performed in the system. Pe_min indicates the minimum value within the system. Normal Operation Pe_min & • Pe_min>0.23MPa <0.17MPa • Upper limit compressor step=max (Max. step) During the control of low pressure protection Compressor step: 2-step down...

  • Page 147: Discharge Pipe Protection Control

    SiBE37-701_B Protection Control Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. [Contents] ★ The following control is performed for each compressor of single unit as well as multi units. [INV compressor] Normal operation •...

  • Page 148: Inverter Protection Control

    Protection Control SiBE37-701_B Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. ★ In the case of multi-outdoor-unit system, each INV compressor performs these controls in the following sequence.
  • Page 149 SiBE37-701_B Protection Control [Inverter fin temperature control] ★ Perform the following control of integrated as well as multi units for each INV compressor. Normal operation Tfin>84°C • Tfin<81°C & • INV upper limit frequency=max (210Hz) During the control of fin temperature protection INV Comp.

  • Page 150: Std Compressor Overload Protection

    Protection Control SiBE37-701_B STD Compressor Overload Protection This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking. STD compressor ON * If the power supply is reset while in operation prohibition mode, the prohibition Demand to operate.

  • Page 151: Other Control

    SiBE37-701_B Other Control 5. Other Control Backup Operation If any of the compressors goes wrong, disable the relevant compressor or the relevant outdoor unit from operating, and then conduct emergency operation only with operational compressors or outdoor units. "Emergency operation with remote controller reset" and "Emergency operation with outdoor unit PCB setting"...

  • Page 152: Outline Of Control (Indoor Unit)

    Outline of Control (Indoor Unit) SiBE37-701_B 6. Outline of Control (Indoor Unit) Operation Flow Chart Start Cooling Operation (Option) Turn ON Aux. electric 52H : OFF power supply heater Humidifier Mu : OFF Initialize electronic expansion valve 20E Detect louver lock The previous settings of air LED in remote...
  • Page 153 SiBE37-701_B Outline of Control (Indoor Unit) Heating Operation Microcomputer dry operation (option) Microcomputer Drain dry display pump MP : OFF Thermostat status Fan MF : Operating in L mode after it stops for 6 min. Fan MF : Operating in L mode Swing flap? Electronic 20E :...

  • Page 154: Thermostat Control

    Outline of Control (Indoor Unit) SiBE37-701_B Thermostat Control 6.2.1 Room Temperature Thermistor in Remote Controller Temperature is controlled by both the room temperature thermistor in remote controller and suction air thermistor in the indoor unit. (This is however limited to when the field setting for the room temperature thermistor in remote controller is set to “Use”.) Cooling If there is a significant difference in the set temperature and the suction air temperature, fine...
  • Page 155 SiBE37-701_B Outline of Control (Indoor Unit) Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by suction air thermistor in indoor unit only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the set temperature.
  • Page 156 Outline of Control (Indoor Unit) SiBE37-701_B 6.2.2 Thermostat Control while in Normal Operation VRV multi systems are set at factory to thermostat control mode using the remote controller. While in normal thermostat differential control mode (i.e., factory setting mode), the thermostat turns OFF when the system reaches a temperature of -1°C from the set temperature while in cooling operation or of +1°C from that while in heating operation.
  • Page 157 SiBE37-701_B Outline of Control (Indoor Unit) 6.2.4 Thermostat Control with Operation Mode Set to "AUTO" When the operation mode is set to "AUTO" on the remote controller, the system will conduct the temperature control shown below. Furthermore, setting changes of the differential value (D°C) can be made according to information in the "Field settings with remote controller (p.

  • Page 158: Drain Pump Control

    Outline of Control (Indoor Unit) SiBE37-701_B Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.3.1 When the Float Switch is Tripped while the Cooling Thermostat is Remote controller "A3"...
  • Page 159 SiBE37-701_B Outline of Control (Indoor Unit) 6.3.3 When the Float Switch is Tripped During Heating Operation: Remote controller "A3" flashing malfunction stop Thermostat (running) Humidifier Reset Float switch Drain pump 5 min. 5 sec. 5 min. During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.

  • Page 160: Control Of Electronic Expansion Valve

    Outline of Control (Indoor Unit) SiBE37-701_B Control of Electronic Expansion Valve Electronic expansion valves in indoor units have the functions of conducting superheated degree control in cooling operation and subcooled degree control in heating operation. However, if the indoor units receive any control command such as a protection control command or a special control command from the outdoor unit, the units will give a priority to the control command.

  • Page 161: Freeze Prevention

    SiBE37-701_B Outline of Control (Indoor Unit) Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat exchanger drops too low, the unit enters freeze prevention operation in accordance with Prevention by Off the following conditions, and is also set in accordance with the conditions given below.

  • Page 162: Heater Control (Optional Pcb Krp1B

    Outline of Control (Indoor Unit) SiBE37-701_B Heater Control (Optional PCB KRP1B...is required.) The heater control is conducted in the following manner. [Normal control] While in heating operation, the heater Set temperature control (ON/OFF) is conducted as shown on the right. 2ºC 2ºC [Overload control]...

  • Page 163: List Of Swing Flap Operations

    SiBE37-701_B Outline of Control (Indoor Unit) List of Swing Flap Operations Swing flaps operate as shown in table below. Flap FXCQ FXFQ FXHQ FXAQ FXKQ Swing Horizontal Horizontal Horizontal Hot start from defrosting operation Wind direction set OFF Horizontal Horizontal Horizontal Swing Horizontal...

  • Page 164: Hot Start Control (In Heating Operation Only)

    Outline of Control (Indoor Unit) SiBE37-701_B Hot Start Control (In Heating Operation Only) At startup with thermostat ON or after the completion of defrosting in heating operation, the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity. [Detail of operation] When either the start condition 1 or the start condition 2 is established, the operations shown below will be conducted.

  • Page 165: Louver Control For Preventing Ceiling Dirt

    SiBE37-701_B Outline of Control (Indoor Unit) Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.

  • Page 166: Part 5 Test Operation

    SiBE37-701_B Part 5 Test Operation 1. Test Operation ..................156 1.1 Installation Process ................156 1.2 Procedure and Outline .................157 1.3 Operation when Power is Turned On ...........189 2. Outdoor Unit PCB Layout..............190 3. Field Setting ..................191 3.1 Field Setting from Remote Controller ...........191 3.2 Field Setting from Outdoor Unit............207 Test Operation...

  • Page 167: Test Operation

    SiBE37-701_B Test Operation 1. Test Operation Installation Process Below Figure shows the installation process. Install in the order of the steps shown. 3. Selection of Location 4. Inspecting and Handling the Unit 5. Placing the Unit 7. Field Wiring 6. Refrigerant Piping 8.

  • Page 168: Procedure And Outline

    Test Operation SiBE37-701_B Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.2.1 Check Work Prior to Turn Power Supply On Is the wiring performed as specified? Is the designated wire used? Check the below items. •...
  • Page 169 SiBE37-701_B Test Operation Is a proper quantity of refrigerant charged? Check on amount of refrigerant The following method is available for additional charging of charge refrigerant. (1) Calculate additional refrigerant quantity. • Calculate a necessary additional refrigerant charging amount according to the procedure for calculation shown below.
  • Page 170 Test Operation SiBE37-701_B 1.2.2 Turn Power On Be sure to turn the power on 6 hours before starting operation to protect Turn outdoor unit and indoor compressors. (to power on crankcase heater) unit power on. Check to be sure the transmission is normal. Check the LED display of the The transmission is normal if the LEDs display conditions as shown in outdoor unit PCB.
  • Page 171 SiBE37-701_B Test Operation 1.2.3 Air Tight Test and Vacuum Drying Note: Always use nitrogen gas for the air tight test. Absolutely do not open the stop valve until the main power circuit insulation measurement has been completed. (measuring after the shutoff valve is opened will cause the insulation value to drop.) <Needed tools>...
  • Page 172 Test Operation SiBE37-701_B <Air tight test> Pressurize the liquid pipe, suction gas pipe, HP/LP gas pipe and equalizer pipe from the service ports of each stop valve to 4.0MPa (do not pressurize more than 4.0MPa). If the pressure does not drop within 24 hours, the system passes the test. If there is a pressure drop, check for leaks, make repairs and perform the airtight test again.
  • Page 173 SiBE37-701_B Test Operation Caulking, etc. Insulation material Piping lead-out hole lid Block “ ”. Open a knock hole at “ ”. Note: After knocking out the holes, we recommend you remove burrs in the knock holes (See above figure) and paint the edges and areas around the edges using the repair paint. 1.2.5 Additional Refrigerant Charge and Check Operation The outdoor unit is charged with refrigerant when shipped from the factory, but depending on the size and length of the piping when installed, it may require additional charging.
  • Page 174 Test Operation SiBE37-701_B [Special notice of product] CLASSIFICATION This air conditioner comes under the term “appliances not accessible to the general public”. EMC CHARACTERISTICS VRVIII System is a class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
  • Page 175 SiBE37-701_B Test Operation [Stop Valve Operation Procedure] When operating the stop valve, follow the procedure instructed below. Note: Do not open the stop valve until “1.2.1 Check work prior to turn power supply on” in page 157 are completed. If the stop valve is left open without turning on the power, it may cause refrigerant to buildup in the compressor, leading insulation degradation.
  • Page 176 Test Operation SiBE37-701_B Service port Seal section Hex holes Shaft (valve body) fig 34 [To open] 1. Remove the cap and turn the shaft counterclockwise with the hexagon wrench (JISB4648). 2. Turn it until the shaft stops. 3. Make sure to tighten the cap securely. (For the tightening torque, refer to the item <Tightening Torque>.) [To close] 1.
  • Page 177 SiBE37-701_B Test Operation [How to Check How Many Units are Connected] It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the PCB (A1P) of outdoor unit (In case of multi system master unit).
  • Page 178 Test Operation SiBE37-701_B 1.2.5.2 Procedure of Adding Refrigerant Charging and Check Operation - REYQ8~16PY1B Warning Electric Shock Warning Make sure to close the EL. COMPO. BOX lid before turning on the power when performing the refrigerant charging operation. Perform the setting on the PCB (A1P) of the outdoor unit and check the LED display after the power is on via the inspection door which is in the EL.
  • Page 179 SiBE37-701_B Test Operation 1.2.5.2.1 Procedure of Adding Refrigerant charging 1. Make sure the following works are complete in accordance with the installation manual. Piping work Wiring work Air tight test Vacuum drying Installation work for BS, indoor unit 2. Calculate the “additional charging amount” using “How to calculate the additional refrigerant to be charged”...
  • Page 180 Test Operation SiBE37-701_B [Automatic refrigerant charging operation procedure] Note: The marks of LED mean as follows. ∗ : OFF : ON : Blinking : OFF, ON or Blinking (1) Open the liquid pipe, suction gas pipe and HP/LP gas pipe stop valves. (The valve A~C must be closed.
  • Page 181 SiBE37-701_B Test Operation In case of heating mode (7) Push the TEST button (BS4) once within 5 minutes after procedure (5) (*4) and close the all front panels. After that, open the valve A immediately (See figure on page 169) (*6) and check the charged amount by measuring device.
  • Page 182 Test Operation SiBE37-701_B [Remote controller heating mode malfunction code] Code The work contents Close the valve A immediately and push the TEST button (BS4) once. And restart from procedure (7) of “In case of heating mode”. Operation is interrupted. Close the valve A immediately and check the below items. Check if HP/LP gas pipe, suction gas pipe or liquid pipe stop valve is opened.

  • Page 183: Test Run

    SiBE37-701_B Test Operation [Remote controller displays malfunction code] Malfunction Installation error Remedial action code E3, E4 The stop valve of the outdoor unit is left F3, F6 Open the stop valve. closed. The phases of the power to the outdoor Exchange two of the three phases (L1, L2, L3) to make unit are reversed.
  • Page 184 Test Operation SiBE37-701_B If the check operation was not performed at first installation, the malfunction code “U3” will be displayed in the remote controller. Perform the check operation following “ 1.2.5.2.2 Procedure of check operation”. 3. Checks After Test Run Perform the following checks after the test run is complete.
  • Page 185 SiBE37-701_B Test Operation 1.2.5.3 Procedure for Additional Refrigerant Charge and Check operation - REYQ18~48P7Y1B (REMQ8~16P7Y1B) Adding refrigerant using the automatic refrigerant charging function is recommended. Follow the procedures below. When charging a system, charging over the permissible quantity can cause liquid hammer. Always use protective gloves and protect your eyes when charging refrigerant.
  • Page 186 Test Operation SiBE37-701_B The automatic refrigerant charging has limits as described below. At out of limit, the system can not operate the automatic refrigerant charging. Outdoor temperature : 0°C DB~43°C DB Indoor temperature : 10°C DB~32°C DB : ≥ 80% Total indoor unit capacity To speed up the process of charging refrigerant for large systems, it is recommended to first manually charge a portion of the refrigerant first before performing automatic charging.
  • Page 187 SiBE37-701_B Test Operation Note: For a multi outdoor unit system, it is not required to connect all charge ports to a refrigerant tank. The refrigerant will be charged with ±30 kg in 1 hour time at an outdoor temperature of 30°C DB or with ±12 kg at an outdoor temperature of 0°C DB.
  • Page 188 Test Operation SiBE37-701_B Charging in heating mode 6. Start up Wait while the unit is preparing for charging in heating mode. H1P H2P H3P H4P H5P Pressure control h l h h h h k (for the first minute) l l h h h k h Start up control (for the next 2 minutes) l l h h h k k...
  • Page 189 SiBE37-701_B Test Operation 10.In case leak detection function not required Press the BS1 MODE button once and the charging is complete. Record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back side of the front panel. Perform the test procedure as described in "Test operation"...
  • Page 190 Test Operation SiBE37-701_B 9. Complete The display on the remote controller shows a flashing " " code for signalling that automatic charging will be finished in about 10 minutes. When the unit stops operating, close valve A immediately and check the LEDs and check if the "...
  • Page 191 SiBE37-701_B Test Operation [Remote controller malfunction code display] Remote controller heating mode malfunction codes Error code P8 recharge Close valve A immediately and press the TEST OPERATION button once. operation The operation will restart from the charging mode judgement onwards. Close valve A immediately.
  • Page 192 Test Operation SiBE37-701_B [How to check how many units are connected] It is possible to find out how many indoor units are active and connected by operating the push- button switch on the printed circuit board (A1P) of the working outdoor unit. Make sure that all the indoor units connected to the outdoor unit are active.
  • Page 193 SiBE37-701_B Test Operation 1.2.6 Before operation 1.2.6.1 Service precautions WARNING: ELECTRIC SHOCK Caution when performing service to inverter equipment 1. Do not open the electric box cover for 10 minutes after the power supply is turned off. 2. Measure the voltage between terminals on the terminal block for power supply with a tester and confirm that the power supply is shut off.
  • Page 194 Test Operation SiBE37-701_B After the installation, check the following before switching on the circuit breaker: 1. The position of the switches that require an initial setting Make sure that switches are set according to your application needs before turning the power supply on.
  • Page 195 SiBE37-701_B Test Operation LED state Throughout the manual the state of the LEDs is indicated as follows: : OFF : ON : Blinking Setting the push button switch (BS1~5) Function of the push button switch which is located on the outdoor unit PCB (A1P): TEST: C/H SELECT MODE...
  • Page 196 Test Operation SiBE37-701_B Setting the mode The set mode can be changed with the button according to the following procedure: BS1 MODE button once, the H1P LED is off h . This mode is For setting mode 1: Press the BS1 MODE not available for heat recovery units.
  • Page 197 SiBE37-701_B Test Operation 3.2Possible settings for function C The noise of level 3 < level 2 < level 1 ( H1P H2P H3P H4P H5P H6P H7P (a) This setting = factory setting 3.3Possible settings for function D and E For function D ( ) only: the noise of level 3 <...
  • Page 198 Test Operation SiBE37-701_B In the test operation, the following checks and judgement will be performed: Check of the stop valve opening Check for wrong wiring Check of refrigerant overcharge Judgement of piping length It takes between 40 and 60 minutes to complete the check operation. Make sure to carry out the test operation after the first installation.
  • Page 199 SiBE37-701_B Test Operation Correcting after abnormal completion of the test operation The test operation is only completed if there is no malfunction code displayed on the remote controller. In case of a displayed malfunction code, perform the following actions to correct the abnormality: Confirm the malfunction code on the remote controller Installation error...

  • Page 200: Operation When Power Is Turned On

    Test Operation SiBE37-701_B Operation when Power is Turned On 1.3.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor-outdoor address, etc.). Status Outdoor unit Test lamp H2P ..

  • Page 201: Outdoor Unit Pcb Layout

    SiBE37-701_B Outdoor Unit PCB Layout 2. Outdoor Unit PCB Layout Outdoor unit PCB (2) Set mode display (LED) (3) BS button H1P H2P H3P H4P H5P H6P H7P H8P 1 2 3 4 1 2 3 4 MODE RETURN TEST RESET (1) Microcomputer normal monitor (4) Dip switch...

  • Page 202: Field Setting

    Field Setting SiBE37-701_B 3. Field Setting Field Setting from Remote Controller Individual function of indoor unit can be changed from the remote controller. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description.
  • Page 203 SiBE37-701_B Field Setting Press Menu/Enter button. Setting confirmation screen is displayed. <Setting confirmation screen> Select and press Menu/ Enter button. Setting details are determined and field setting list screen returns. In the case of multiple setting changes, repeat “ (3) ” to “ (7) ”. After all setting changes are com- Press Menu/Enter button.
  • Page 204 Field Setting SiBE37-701_B 3.1.2 Wireless Remote Controller - Indoor Unit BRC7C type BRC7E type BRC4C type MODE NO. FIELD SET MODE SECOND CODE NO. FIRST CODE NO. 1, 6 (V2770) 1. When in the normal mode, push the “ ” button for 4 seconds or more, and operation then enters the “field set mode.”...
  • Page 205 SiBE37-701_B Field Setting 3.1.3 Simplified Remote Controller BRC2A51 BRC2C51 MODE NO. FIRST CODE NO. UNIT NO. SECOND CODE NO. (7) (4) (5) (6) (V0294) 1. Remove the upper part of remote controller. 2. When in the normal mode, press the [BS6] BUTTON ( ) (field set), and the FIELD SET MODE is entered.
  • Page 206 Field Setting SiBE37-701_B 3.1.4 Setting Contents and Code No. – VRV Indoor unit Mode First Setting Contents Second Code No.(Note 3) Details system Code indoor Note 2 unit 10(20) Filter contamination heavy/ Ultra Light Approx. Heavy Approx. — — settings light (Setting for display long life 10,000...
  • Page 207 SiBE37-701_B Field Setting 3.1.5 Applicable Range of Field Setting Ceiling mounted cassette Slim Concealed Concealed Concealed Concealed Ceiling Wall Floor Concealed concealed ceiling unit ceiling unit ceiling unit ceiling unit suspended mounted standing floor Roundflow 4-way 2-way Corner ceiling unit (small) (large) unit...
  • Page 208 Field Setting SiBE37-701_B 3.1.6 Detailed Explanation of Setting Modes (1) Filter Sign Setting If switching the filter sign ON time, set as given in the table below. Set Time Filter Specs. Standard Filter Long Life Filter Ultra Long Life Filter Setting Contamination Light 200 hrs.
  • Page 209 SiBE37-701_B Field Setting (6) Optional Output Switching Using this setting, "operation output signal" and "abnormal output signal" can be provided. Output signal is output between terminals K1 and K2 of "customized wiring adaptor," an optional accessory. Mode No. First Code No. Second Code No.
  • Page 210 Field Setting SiBE37-701_B (11) Auto Restart after Power Failure Reset For the air conditioners with no setting for the function (same as factory setting), the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off.
  • Page 211 SiBE37-701_B Field Setting (14) Airflow Direction Setting Set the airflow direction of indoor units as given in the table below. (Set when optional air outlet blocking pad has been installed.) The second code No. is factory setting to “01.” Setting Table Second Code Mode No.
  • Page 212 Field Setting SiBE37-701_B (18) External Static Pressure Settings (for FXMQ-P model) MODE NO. FIRST CODE NO. SECOND CODE NO. External Static Pressure 30Pa (*1) 50Pa 60Pa 70Pa 80Pa 90Pa 100Pa 13 (23) 110Pa 120Pa 130Pa 140Pa 150Pa 160Pa 180Pa (*2) 200Pa (*2) The “SECOND CODE NO.”...
  • Page 213 SiBE37-701_B Field Setting (22) Individual Setting of Ventilation This is set to perform individual operation of heat reclaim ventilation using the remote controller/ central unit when heat reclaim ventilation is built in. (Switch only when heat reclaim ventilation is built in.) Mode No.
  • Page 214 Field Setting SiBE37-701_B 3.1.7 Centralized Control Group No. Setting BRC1E Type In order to conduct the centralized remote control using the centralized remote controller and the unified ON/OFF controller, Group No. settings should be made by group using the operating remote controller.
  • Page 215 SiBE37-701_B Field Setting BRC7C Type Group No. setting by wireless remote controller for centralized control 1. When in the normal mode, push “ ” button for 4 seconds or more, and operation then BRC7E Type enters the “field set mode.” BRC4C Type 2.
  • Page 216 Field Setting SiBE37-701_B 3.1.8 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.
  • Page 217 SiBE37-701_B Field Setting How to Select Whether operation by remote controller will be possible or not for turning on/off, controlling temperature or setting operation mode is selected and decided by the operation mode given on Operation Mode the right edge of the table below. Example ON by remote OFF by remote...

  • Page 218: Field Setting From Outdoor Unit

    Field Setting SiBE37-701_B Field Setting from Outdoor Unit 3.2.1 Field Setting from Outdoor Unit List of Field Setting Items This following section indicates the list of field setting items. For the lists of dip switch contents, Setting mode 1, and Setting mode 2, refer to information in tables shown on the following page onward.
  • Page 219 SiBE37-701_B Field Setting Overview of setting procedure Reference Setting item Content and objective of setting page Indoor unit 216~219 Used to operate the indoor unit in the fan forced H Set No. 5 of "Setting mode 2" to indoor stopped state in forced H operation operation unit forced fan H.
  • Page 220 Field Setting SiBE37-701_B 3.2.2 Setting by Dip Switches (1) Factory setting of initial PCB. Do not make any changes in all factory settings of the DIP switches on the control PCB. Status of DIP switches :Represents the factory setting positions of the switches.
  • Page 221 SiBE37-701_B Field Setting “Detail of DS1-1~4, DS2-1~4 setting” Single Use A1P (Main) Factory Setting ( represents the position of switches) EB**** DS1DS2 Allocation Application model Setting method ( represents the position of switches) HEAT RECOVERY (8HP) REYQ8PY1B Set DS1-4 and DS2-3 to ON. 1 2 3 4 1 2 3 4 HEAT RECOVERY (10HP)
  • Page 222 Field Setting SiBE37-701_B Single Use A3P (Sub) Factory Setting ( represents the position of switches) EB**** DS1 DS2 Allocation Application model Setting method ( represents the position of switches) HEAT RECOVERY (8HP) REYQ8PY1B Set DS1-3 and DS2-2 to ON. 1 2 3 4 1 2 3 4 HEAT RECOVERY (10HP) REYQ10PY1B...
  • Page 223 SiBE37-701_B Field Setting Multiple Type Allocation Application model Setting method ( represents the position of switches) HEAT RECOVERY (8HP) REMQ8PY1B Set DS1-4, DS2-2 and DS2-3 to ON. 1 2 3 4 1 2 3 4 HEAT RECOVERY (10HP) REMQ10PY1B Set DS1-4 and DS2-4 to ON. 1 2 3 4 1 2 3 4 HEAT RECOVERY (12HP)
  • Page 224 Field Setting SiBE37-701_B 3.2.3 Setting by Push Button Switches The following settings are made by push button switches on PCB. In case of multi-outdoor unit system, various items should be set with the master unit. (Setting with the slave unit is disabled.) The master unit and slave unit can be discriminated with the LED display as shown below.
  • Page 225 SiBE37-701_B Field Setting Mode changing procedure 2 (Set): Select mode with BS2 (SET button) in each selection step. Setting mode 1 Press BS1 (MODE button) for more than 5 sec. Press BS1 (MODE button) one time. (Initial condition) Setting mode 2 Monitor mode Setting item selection Check item selection...
  • Page 226 Field Setting SiBE37-701_B a. “Setting mode 1” This mode is used to set and check the following items. Check items ··········· The following items can be checked. (1) Current operating conditions (Normal / Abnormal / In check operation) (2) Low noise operating conditions (In normal operation / In low noise operation) (3) Demand operating conditions (In normal operation / In demand operation) Procedure for checking check items The system is normally set to "Setting...
  • Page 227 SiBE37-701_B Field Setting Setting item Description b. “Setting mode 2” Used to make setting of contents to display on the digital Digital pressure pressure gauges (e.g. pressure sensors and temperature gauge kit display sensors) Push and hold the MODE (BS1) button for 5 seconds and set to Cool/heat unified Sets address for cool/heat unified operation.
  • Page 228 Field Setting SiBE37-701_B Setting item Description Emergency operation (Setting for the unit 1 operation prohibition in multi- outdoor-unit system) Emergency operation Used to temporarily prohibit the applicable outdoor unit (Setting for the unit from operating should there be any faulty part in multi- 2 operation outdoor-unit system.
  • Page 229 SiBE37-701_B Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory setting k h h h h h h ∗ Address k h h h h h k Binary number Digital pressure gauge kit display (4 digits)
  • Page 230 Field Setting SiBE37-701_B Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory setting k h h h h h k ∗ ENECUT test ENECUT output OFF operation (Domestic k h h h h k h Japan only) ENECUT output forced ON k h h h h h k...
  • Page 231 SiBE37-701_B Field Setting c. Monitor mode LED display Setting item Data display l h h h h h h To enter the monitor mode, push the Various settings Lower 4 digits MODE (BS1) button when in l h h h h h k “Setting mode 1”.
  • Page 232 Field Setting SiBE37-701_B Setting item 0 Display contents of “Number of units for various settings” l h h k h h h EMG operation / backup operation l h h h h h h setting l h h h k h h Defrost select setting Short l h h h l h h...
  • Page 233 SiBE37-701_B Field Setting 3.2.4 Cool / Heat Mode Switching Set Cool/Heat Separately for Each BS Unit by Cool/Heat Selector. Set remote controller change over switch (SS1, SS2) as following: • When using COOL/HEAT selector, turn this switch to the BS side. NOTE: This setting must be completed before turning power supply ON.
  • Page 234 Field Setting SiBE37-701_B 3.2.5 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adaptor (optional), you can lower operating noise. Setting Content Level 1...
  • Page 235 SiBE37-701_B Field Setting Image of operation in the case of A If capacity precedence is set in Operation sound “Capacity precedence setting”, the fan speed will be increased according to the load of air conditioning when load is heavier. Rated operation sound Operation sound during Low noise mode instructing...
  • Page 236 Field Setting SiBE37-701_B Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adaptor (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Description of setting Setting procedure Setting External control...
  • Page 237 SiBE37-701_B Field Setting Image of operation in the case of A Power consumption The power Rated power consumption consumption during the demand level 1 80 % of rated power consumption Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing instructing can be 70 % of rated power consumption set with the...
  • Page 238 Field Setting SiBE37-701_B Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 1 is entered and H1P lights off. During the setting mode 1 is displayed, “In low noise operation”...
  • Page 239 SiBE37-701_B Field Setting : ON : OFF : Blink Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P External low noise (Factory...
  • Page 240 Field Setting SiBE37-701_B 3.2.6 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective electronic expansion valve of indoor and outdoor units. All indoor and outdoor unit’s operation are prohibited. [Operation procedure] In setting mode 2 with units in stop mode, set “Refrigerant Recovery / Vacuuming mode” to ON.
  • Page 241 SiBE37-701_B Field Setting 3.2.7 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. [Operating procedure] With Setting Mode 2 while the unit stops, set “Refrigerant recovery / Vacuuming mode” to ON.

  • Page 242: Emergency Operation

    Field Setting SiBE37-701_B 3.2.9 Emergency Operation If any of the compressors goes wrong, disable the relevant compressor or the relevant outdoor unit from operating, and then conduct emergency operation only with operational compressors or outdoor units. There are two ways of conducting the Emergency operation : with remote controller reset and by setting outdoor unit PCB.
  • Page 243 SiBE37-701_B Field Setting k Disabling the compressor 2 (on the left side) from operating: Set No. 39 of setting mode 2 to "Disable-compressor-2 operation". LED display ( : ON, : OFF, : Blink) (Step) H1P-----------H7P (1) Press the PAGE button (BS1) for 5 k h h h h h h seconds or more.
  • Page 244 Field Setting SiBE37-701_B [Cancel of Emergency Operation] To cancel the emergency operation, conduct the following setting. (Return to Factory setting.) <REYQ8 to 16PY1> k Cancel disabling the compressor 1 (on the right side) from operating: Set No. 38 "Disable-compressor-1 operation" of setting mode 2 to "OFF". LED display ( : ON, : OFF,...
  • Page 245 SiBE37-701_B Field Setting k Cancel disabling the outdoor unit 2 from operating: Set No. 39 "Disable-outdoor-unit-2 operation" of setting mode 2 to "OFF". LED display ( : ON, : OFF, : Blink) (Step) H1P-----------H7P (1) Press the PAGE button (BS1) for 5 k h h h h h h seconds or more.
  • Page 246 Field Setting SiBE37-701_B 3.2.10 Prevention of Micro Heating in Non-operating Unit In heating operation, this setting is made to prevent room temperature from rising due to micro heating capacity generated in the unit with its heating thermostat OFF or in the unit with its heating operation stopped.

  • Page 247: Part 6 Troubleshooting

    SiBE37-701_B Part 6 Troubleshooting 1. Symptom-based Troubleshooting ............239 2. Troubleshooting by Remote Controller ..........242 2.1 The INSPECTION / TEST Button............242 2.2 Self-diagnosis by Wired Remote Controller .........243 2.3 Self-diagnosis by Wireless Remote Controller ........244 2.4 Inspection Mode ...................247 2.5 Remote Controller Service Mode ............248 2.6 Test Run Mode..................251 2.7 Remote Controller Self-Diagnosis Function .........251 3.
  • Page 248 SiBE37-701_B 3.27 “ H9 ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air ...................305 3.28 “ J2 ” Outdoor Unit: Current Sensor Malfunction ........306 3.29 “ J3 ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31T, R32T, R33T)................307 3.30 “ J4 ” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T)............308 3.31 “...
  • Page 249 SiBE37-701_B 3.59 “ UF ” System is not Set yet..............368 3.60 “ UH ” Malfunction of System, Refrigerant System Address Undefined ..........369 4. Troubleshooting (OP: Centralized Remote Controller) .......371 4.1 “ M1 ” PCB Defect ...................371 4.2 “ M8 ” Malfunction of Transmission between Optional Controllers for Centralized Control ............372 4.3 “...

  • Page 250: Symptom-Based Troubleshooting

    Symptom-based Troubleshooting SiBE37-701_B 1. Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system does not start operation at all. Blowout of fuse(s) Turn Off the power supply and then replace the fuse(s). Cutout of breaker(s) • If the knob of any breaker is in its OFF position, turn ON the power supply.
  • Page 251 SiBE37-701_B Symptom-based Troubleshooting Symptom Supposed Cause Countermeasure The system This symptom occurs The system is in preparation Wait for a period of approximately conducts fan immediately after turning ON mode of operation. 10 minutes. operation but not the power supply. cooling or heating operation.
  • Page 252 Symptom-based Troubleshooting SiBE37-701_B Symptom Supposed Cause Countermeasure 12 Dust comes out Dust comes out from the Dust, which has deposited on the Normal operation. from the system. system when it restarts after inside of indoor unit, is blown out the stop for an extended period from the system.

  • Page 253: Troubleshooting By Remote Controller

    SiBE37-701_B Troubleshooting by Remote Controller 2. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. On power-up, the message "Connection under check. Please wait for a moment" will be displayed on the remote controller screen.

  • Page 254: Self-Diagnosis By Wired Remote Controller

    Troubleshooting by Remote Controller SiBE37-701_B Self-diagnosis by Wired Remote Controller Explanation The following will be displayed on the screen when a malfunction (or a warning) occurs during operation. Check the malfunction code and take the corrective action specified for the particular model. Screen Operation lamp (1) Checking a malfunction or warning...

  • Page 255: Self-Diagnosis By Wireless Remote Controller

    SiBE37-701_B Troubleshooting by Remote Controller Self-diagnosis by Wireless Remote Controller In the Case of If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. BRC7C Type The malfunction code can be determined by following the procedure described below. (The BRC7E Type malfunction code is displayed when an operation error has occurred.
  • Page 256 Troubleshooting by Remote Controller SiBE37-701_B The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. “Advance” button “Backward” button Troubleshooting...
  • Page 257 SiBE37-701_B Troubleshooting by Remote Controller Normal status Enters inspection mode from normal status when the INSPECTION/ TEST button is pressed 1 Press INSPECTION/TEST button If no button is pressed for 1 minute, equipment returns to normal status. Press MODE When MODE selector selector button is pressed or no button.

  • Page 258: Inspection Mode

    Troubleshooting by Remote Controller SiBE37-701_B Inspection Mode Operating the INSPECTION/TEST button on the remote controller will make it possible to check the malfunction codes, indoor unit model codes, and outdoor unit model codes while in inspection mode. Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs.

  • Page 259: Remote Controller Service Mode

    SiBE37-701_B Troubleshooting by Remote Controller Remote Controller Service Mode Operating the CHECK/TEST button on the remote controller will make it possible to obtain "service data" and change "service setting" while in service mode. How to Enter the Service Mode Basic screen Field setting mode Service mode Press and hold Cancel button for 4 seconds or more.
  • Page 260 Troubleshooting by Remote Controller SiBE37-701_B Service Menu Item 2 Remarks 1. Model Name Display 1. Unit No. Select the Unit No. you want to check. 2. Indoor unit 3. Outdoor unit 2. Operating Hours 1. Unit No. Select the Unit No. you want to check. Display 2.
  • Page 261 SiBE37-701_B Troubleshooting by Remote Controller Service Menu Item 2 Remarks 6. Error Display 1. Warning display ON Displays a warning on the screen if an error Selection occurs. 2. Warning display OFF No warning is displayed. 3. Error display ON Displays the error on the screen.

  • Page 262: Test Run Mode

    Troubleshooting by Remote Controller SiBE37-701_B Test Run Mode Operating the INSPECTION/TEST button on the remote controller will make it possible to put the system into test run mode. (1) Test run mode setting The test run mode setting can be made by conducting the following operation. Normal Test run operation...
  • Page 263 SiBE37-701_B Troubleshooting by Remote Controller (1) Checking a malfunction or warning Operation Status Display The operation lamp (green) starts to blink. The message Abnormal The system stops operating. "Malfunction: Press Menu shutdown button" will appear and blink at the bottom of the screen. The operation lamp (green) remains on.
  • Page 264 Troubleshooting by Remote Controller SiBE37-701_B k: ON h: OFF l: Blink Malfunction Operation Malfunction contents Page code lamp Referred Indoor Unit Error of external protection device PCB defect Malfunction of drain level control system (S1L) Fan motor (M1F) lock, overload Malfunction of indoor unit fan motor Overload/Overcurrent/Lock of indoor unit fan motor Malfunction of swing flap motor (M1S)
  • Page 265 SiBE37-701_B Troubleshooting by Remote Controller k: ON h: OFF l: Blink Malfunction Operation Malfunction contents Page code lamp Referred Outdoor Unit Malfunction of power unit — Malfunction of transmission between inverter and control PCB Inverter over-ripple protection Malfunction of inverter radiation fin temperature rise sensor Faulty field setting after replacing main PCB or faulty combination of PCB System Refrigerant shortage alert...
  • Page 266 Troubleshooting by Remote Controller SiBE37-701_B Malfunction code indication by outdoor unit Malfunctions Malfunction code Description of malfunction Description of malfunction (PGF) Remote <Monitor mode> controller PCB malfunction PCB malfunction To enter the monitor mode, push the MODE (BS1) button when in “Setting Faulty PCB mode 1”.
  • Page 267 SiBE37-701_B Troubleshooting by Remote Controller k : ON h : OFF l :Blink Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 4) Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗1 ∗1 ∗1...
  • Page 268 Troubleshooting by Remote Controller SiBE37-701_B <Monitor mode> Malfunctions Malfunction code To enter the monitor mode, push the Description of malfunction Description of malfunction (PGF) Remote MODE (BS1) button when in “Setting controller mode 1”. Open phase and unbalanced power Unbalanced INV power supply voltage supply INV radiation fin temperature sensor INV fin thermistor malfunction...
  • Page 269 SiBE37-701_B Troubleshooting by Remote Controller k : ON h : OFF l :Blink Confirmation of malfunction 1 (Check 1) Confirmation of malfunction 2 (Check 2) Confirmation of malfunction 3 (Check 3) Confirmation of malfunction 4 (Check 4) Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗1 ∗1 ∗1...

  • Page 270: Troubleshooting By Indication On The Remote Controller

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3. Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: Error of External Protection Device Remote Controller Display Applicable All indoor unit models Models Method of Detect open or short circuit between external input terminals in indoor unit. Malfunction Detection Malfunction...

  • Page 271: A1 " Indoor Unit: Pcb Defect

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: PCB Defect Remote Controller Display Applicable All indoor unit models Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory.

  • Page 272: A3 " Indoor Unit: Malfunction Of Drain Level Control System (S1L)

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B “ ” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display Applicable FXCQ, FXZQ, FXFQ, FXSQ, FXKQ, FXDQ, FXMQ, FXHQ (Option), FXMQ200, 250M (Option), FXAQ (Option) Models Method of By float switch OFF detection Malfunction Detection...
  • Page 273 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. A short circuit The float switch is connector is connected to X8A or...

  • Page 274: A6 " Indoor Unit: Fan Motor (M1F) Lock, Overload

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B “ ” Indoor Unit: Fan Motor (M1F) Lock, Overload Remote Controller Display Applicable FXAQ20~63PV1, FXFQ20~125P8VE Models Method of Abnormal fan revolutions are detected by a signal output from the fan motor. Malfunction Detection Malfunction When the fan revolutions do not increase...
  • Page 275 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn OFF the power supply, and then wait for a period of 10 minutes. Are there any foreign matters Remove the foreign matters.

  • Page 276: A6 " Indoor Unit : Malfunction Of Indoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B “ ” Indoor Unit : Malfunction of Indoor Unit Fan Motor Remote Controller Display Applicable FXHQ32~100MAVE, FXDQ20~32PB, 40~63NBVE Models Method of This malfunction is detected if there is no revolutions detection signal output from the fan motor. Malfunction Detection Malfunction...
  • Page 277 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Remote Controller Display Applicable FXMQ50~140P Models Method of Detection from the current flow on the fan PCB. Detection from the RPM of the fan motor in operation. Malfunction Detection from the position signal of the fan motor. Detection Detection from the current flow on the fan PCB when the fan motor starting operation.
  • Page 278 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power and wait for 10 minutes. There is a foreign Remove the foreign matter.
  • Page 279 SiBE37-701_B Troubleshooting by Indication on the Remote Controller The resistors among U, V, Replace the fan motor. and W are unbalanced or short-circuited. Remove the signal connector from the fan motor and check the resistance (*2). Between V and GND terminals, and between GND Replace the fan motor.

  • Page 280: A7 " Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B “ ” Indoor Unit: Malfunction of Swing Flap Motor (M1S) Remote Controller Display Applicable FXCQ, FXHQ, FXKQ Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction When ON/OFF of the micro-switch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time (about 30 seconds).
  • Page 281 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. Indoor unit is a model Replace the indoor unit PCB.

  • Page 282: A8 " Abnormal Power Supply Voltage

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B “ ” Abnormal Power Supply Voltage Remote Controller Display Applicable FXMQ20~140P Models Method of Detect malfunction checking the input voltage of fan motor. Malfunction Detection When the input voltage of fan motor is 150V and below, or 386V and above. Malfunction Decision Conditions...

  • Page 283: A9 " Electronic Expansion Valve Malfunction / Dust Clogging

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller “ ” Electronic Expansion Valve Malfunction / Dust Clogging Remote Controller Display Applicable FXFQ25~125P Models Method of Check coil condition of electronic expansion valve by using micro-computer. Check dust clogging condition of electronic expansion valve main body by using micro- Malfunction computer.
  • Page 284 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Replace the electronic expansion When power is supplied. valve main body. Electronic expansion valve is Shut the power supply off after connected to X7A of...

  • Page 285: A9 " Indoor Unit: Malfunction Of Electronic Expansion Valve Coil

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: Malfunction of Electronic Expansion Valve Coil Remote Controller Display Applicable Indoor units except FXFQ models Models Method of Check coil condition of electronic expansion valve by using micro-computer. Malfunction Detection Malfunction...
  • Page 286 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Electronic expansion valve is Shut the power supply off after connected to X7A of connection and then restart.

  • Page 287: Af " Indoor Unit: Drain Level Above Limit

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXZQ, FXFQ, FXSQ, FXKQ, FXMQ, FXDQ Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.

  • Page 288: Aj " Indoor Unit: Malfunction Of Capacity Determination Device

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B “ ” Indoor Unit: Malfunction of Capacity Determination Device Remote Controller Display Applicable All indoor unit models Models Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is Malfunction determined.

  • Page 289: C1 " Indoor Unit: Failure Of Transmission (Between Indoor Unit Pcb And Fan Pcb)

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.10 “ ” Indoor Unit: Failure of Transmission (Between Indoor unit PCB and Fan PCB) Remote Controller Display Applicable FXMQ20~140P Models Method of Check the condition of transmission between indoor PCB (A1P) and PCB for fan (A2P) using computer.
  • Page 290 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the connector between indoor PCB Connect the connector accurately. (A1P) and PCB for fan (A2P) accuratel y connected? (*1) Confirm the condition of transmission on indoor PCB...

  • Page 291: C4 " Indoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.11 “ ” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 292: C5 " Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.12 “ ” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by gas pipe thermistor. Malfunction Detection Malfunction...

  • Page 293: C6 " Indoor Unit: Failure Of Combination (Between Indoor Unit Pcb And Fan Pcb)

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.13 “ ” Indoor Unit: Failure of Combination (Between Indoor unit PCB and Fan PCB) Remote Controller Display Applicable FXMQ20~140P Models Method of Conduct open line detection with PCB for fan (A2P) using indoor PCB (A1P). Malfunction Detection Malfunction...

  • Page 294: C9 " Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.14 “ ” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by suction air temperature thermistor.

  • Page 295: Cj " Indoor Unit: Malfunction Of Room Temperature

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.15 “ ” Indoor Unit: Malfunction of Room Temperature Thermistor in Remote Controller Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by room temperature thermistor in remote controller.

  • Page 296: E1 " Outdoor Unit: Pcb Defect

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.16 “ ” Outdoor Unit: PCB Defect Remote Controller Display Applicable REYQ8P~48P Models Method of Abnormality is detected under the communication conditions in the hardware section between the indoor unit and outdoor unit. Malfunction Detection Malfunction...

  • Page 297: E3 " Outdoor Unit: Actuation Of High Pressure Switch

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.17 “ ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable REYQ8P~48P Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction Error is generated when the high pressure switch activation count reaches the number specific...
  • Page 298 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check for the points shown below. (1) Is the stop valve open? (2) Is the high pressure switch connector properly connected to the main PCB? (3) Does the high pressure switch have continuity?

  • Page 299: E4 " Outdoor Unit: Actuation Of Low Pressure Sensor

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.18 “ ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable REYQ8P~48P Models Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under compressor operation.
  • Page 300 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the stop Open the stop valve. valve open? (1) Mount a pressure gauge on the low pressure service port.

  • Page 301: E5 " Outdoor Unit: Inverter Compressor Motor Lock

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.19 “ ” Outdoor Unit: Inverter Compressor Motor Lock Remote Controller Display Applicable REYQ8P~48P Models Method of Inverter PCB takes the position signal from UVW line connected between the inverter and compressor, and the malfunction is detected when any abnormality is observed in the phase- Malfunction current waveform.
  • Page 302 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the Local factor stop valve is Open the stop valve. open.

  • Page 303: E6 " Outdoor Unit: Std Compressor Motor Overcurrent/Lock

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.20 “ ” Outdoor Unit: STD Compressor Motor Overcurrent/ Lock Remote Controller Display Applicable REYQ8P~48P Models Method of Detects the overcurrent with current sensor (CT). Malfunction Detection Malfunction Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds.

  • Page 304: E7 " Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.21 “ ” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable REYQ8P~48P Models Method of Detect a malfunction based on the current value in the INVERTER PCB (as for motor 2, current value in the fan PCB).
  • Page 305 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check in the monitor mode 12HP ~18HP class models have 2 fans. Check electric motor (electric motor 1 or 2) corresponding to malfunction code “E7”...
  • Page 306 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting No continuity of Replace the fan inverter fuse (F1U) on the fan inverter PCB. PCB. Unable to rotate the fan manually with ease when Replace the corresponding removing the connector of fan motor.

  • Page 307: E9 " Outdoor Unit: Malfunction Of Electronic Expansion Valve Coil (Y1E~Y5E)

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.22 “ ” Outdoor Unit: Malfunction of Electronic Expansion Valve Coil (Y1E~Y5E) Remote Controller Display Applicable REYQ8P~48P Models Method of Check disconnection of connector Check continuity of electronic expansion valve Malfunction Detection Malfunction No current is detected in the common (COM [+]) when power supply is ON.
  • Page 308 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn power supply off, and turn power supply on again. Return to normal? External factor other than malfunction (for example, noise etc.).

  • Page 309: F3 " Outdoor Unit: Abnormal Discharge Pipe Temperature

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.23 “ ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable REYQ8P~48P Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction When the discharge pipe temperature rises to an abnormally high level (135 °C and above)
  • Page 310 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Connect the service checker. Press reset and start operation again. Check if discharge pipe thermistor Replace the discharge pipe property is normal.

  • Page 311: F6 " Outdoor Unit: Refrigerant Overcharged

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.24 “ ” Outdoor Unit: Refrigerant Overcharged Remote Controller Display Applicable REYQ8P~48P Models Method of Excessive charging of refrigerant is detected by using the outdoor air temperature, heat exchanging deicer temperature and liquid pipe temperature during a check run. Malfunction Detection Malfunction...

  • Page 312: F9 " Outdoor Unit : Malfunction Of Bs Unit Electronic Expansion Valve

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.25 “ ” Outdoor Unit : Malfunction of BS Unit Electronic Expansion Valve Remote Controller Display Applicable BS unit Models Method of This malfunction is detected by whether or not all coils of the electronic expansion valve have continuity.
  • Page 313 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn OFF the power supply once and then ON again. Does the power Probe any external causes supply normally other than failures (e.g.

  • Page 314: H7 " Outdoor Unit: Abnormal Outdoor Fan Motor Signal

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.26 “ ” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable REYQ8P~48P Models Method of Detection of abnormal signal from fan motor. Malfunction Detection Malfunction In case of detection of abnormal signal at starting fan motor. Decision Conditions Supposed...
  • Page 315 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the fan motor corresponding to the malfunction code “ ” in the monitor mode. (Refer to P.255~P.256 for how to check.) When Confirmation of malfunction 3 shows as follows: →...

  • Page 316: H9 " Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.27 “ ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction...

  • Page 317: J2 " Outdoor Unit: Current Sensor Malfunction

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.28 “ ” Outdoor Unit: Current Sensor Malfunction Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the current value detected by current sensor. Malfunction Detection Malfunction When the current value detected by current sensor becomes 5A or lower, or 40A or more during standard compressor operation.

  • Page 318: J3 " Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R31T, R32T, R33T)

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.29 “ ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31T, R32T, R33T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor.

  • Page 319: J4 " Outdoor Unit: Malfunction Of Temperature Sensor For Heat Exchanger Gas (R2T Or R11T)

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.30 “ ” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T or R11T) Remote Controller Display Applicable REYQ8P~48P Models Method of Detect malfunction based on the temperature detected by each thermistor. Malfunction Detection Malfunction...

  • Page 320: J5 " Outdoor Unit: Malfunction Of Thermistor (R8T Or R10T) For Suction Pipe

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.31 “ ” Outdoor Unit: Malfunction of Thermistor (R8T or R10T) for Suction Pipe Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor.

  • Page 321: J6 " Outdoor Unit: Malfunction Of Thermistor (R4T Or R12T) For Outdoor Unit Heat Exchanger

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.32 “ ” Outdoor Unit: Malfunction of Thermistor (R4T or R12T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 322: (R6T, R9T Or R14T)

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.33 “ ” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T, R9T or R14T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Detection Malfunction...

  • Page 323: (R7T Or R15T)

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.34 “ ” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T or R15T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Detection Malfunction...

  • Page 324: J9 " Outdoor Unit: Malfunction Of Subcooling Heat Exchanger

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.35 “ ” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T or R13T) Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor.

  • Page 325: Ja " Outdoor Unit: Malfunction Of High Pressure Sensor

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.36 “ ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit.
  • Page 326 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Confirm which high pressure sensor is abnormal using outdoor unit "monitor mode". (Refer to P.255~P.256) 1.

  • Page 327: Jc " Outdoor Unit: Malfunction Of Low Pressure Sensor

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.37 “ ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the pressure detected by the low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit.
  • Page 328 Troubleshooting by Indication on the Remote Controller SiBE37-701_B ∗ 1: Voltage measurement point Outdoor unit PCB (A1P) X31A Black White Micro-computer A/D input ∗2 Measure DC voltage here. ∗ 2: Refer to “Pressure Sensor, Pressure / Voltage Characteristics” table on P452. Troubleshooting...

  • Page 329: L1 " Outdoor Unit: Malfunction Of Inverter Pcb

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.38 “ ” Outdoor Unit: Malfunction of Inverter PCB Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected based on the current value during waveform output before starting compressor. Malfunction Malfunction is detected based on the value from current sensor during synchronous operation Detection when starting the unit.
  • Page 330 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn OFF the power supply once, and then check the compressor lead wires. Do the lead wires have any disconnection, broken Replace the lead wires.

  • Page 331: L4 " Outdoor Unit: Malfunction Of Inverter Radiation Fin Temperature Rise

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.39 “ ” Outdoor Unit: Malfunction of Inverter Radiation Fin Temperature Rise Remote Controller Display Applicable REYQ8P~48P Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the inverter radiation fin increases above 87°C.
  • Page 332 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the individual system applied to the outdoor unit? Individual system Multi system While in monitor mode, check While in monitor mode, whether the system is right-...
  • Page 333 SiBE37-701_B Troubleshooting by Indication on the Remote Controller XIIIA: EH CONNECTOR WHITE Inverter PCB for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P450. Troubleshooting...

  • Page 334: L5 " Outdoor Unit: Momentary Overcurrent Of Inverter Compressor

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.40 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor.
  • Page 335 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Compressor inspection Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the stop valve is Open the stop valve. open.

  • Page 336: L8 " Outdoor Unit: Momentary Overcurrent Of Inverter Compressor

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.41 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable REYQ8P~48P Models Method of Malfunction is detected from the current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected.
  • Page 337 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Output current check Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if the Open the stop valve. stop valve is open.

  • Page 338: L9 " Outdoor Unit: Inverter Compressor Starting Failure

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.42 “ ” Outdoor Unit: Inverter Compressor Starting Failure Remote Controller Display Applicable REYQ8P~48P Models Method of Detect the failure based on the signal waveform of the compressor. Malfunction Detection Malfunction Starting the compressor does not complete. Decision Conditions Supposed...
  • Page 339 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is the individual system applied to the outdoor unit? Individual system Multi system While in monitor mode, check While in monitor mode, whether the system is right-...
  • Page 340 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Continued from the previous page. (Start failure due to aged operation.) Refrigerant is sleeping. (The unit is Cancel the sleeping state of out of power supply refrigerant. for more than 6 hours.) Check if the insulation resistance...

  • Page 341: Lc " Outdoor Unit: Malfunction Of Transmission Between

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.43 “ ” Outdoor Unit: Malfunction of Transmission between Inverter and Control PCB Remote Controller Display Applicable REYQ8P~48P Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction...
  • Page 342 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Does the model setting Was the PCB (A1P) Make correct model setting. of the spare PCB match replaced with a spare (For setting procedure, refer to...
  • Page 343 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Replace the noise The fuse F400U of the A3P has filter of the A3P. been molten down. Disconnect the sensor connector (X2A or X4A) from the fan motor, and then turn ON the power supply. Is any malfunction Take countermeasures code other than "...

  • Page 344: P1 " Outdoor Unit: Inverter Over-Ripple Protection

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.44 “ ” Outdoor Unit: Inverter Over-Ripple Protection Remote Controller Display Applicable REYQ8P~48P Models Method of Imbalance in supply voltage is detected in PCB. Imbalance in the power supply voltage causes increased ripple of voltage of the main circuit Malfunction capacitor in the inverter.
  • Page 345 Be sure to explain to the user that Give the user a copy of "notification of inspection results" and leave there is a "power supply imbalance" it up to him to improve the imbalance. for which DAIKIN is not responsible. (V2816) Troubleshooting...

  • Page 346: P4 " Outdoor Unit: Malfunction Of Inverter Radiation Fin

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.45 “ ” Outdoor Unit: Malfunction of Inverter Radiation Fin Temperature Rise Sensor Remote Controller Display Applicable REYQ8P~48P Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...
  • Page 347 SiBE37-701_B Troubleshooting by Indication on the Remote Controller XIIIA: EH CONNECTOR WHITE Inverter PCB for compressor ∗ Refer to “Thermistor Resistance / Temperature Characteristics” table on P450. Troubleshooting...

  • Page 348: Pj " Outdoor Unit: Faulty Field Setting After Replacing Main Pcb Or Faulty Combination Of Pcb

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.46 “ ” Outdoor Unit: Faulty Field Setting after Replacing Main PCB or Faulty Combination of PCB Remote Controller Display Applicable REYQ8P~48P Models Method of This malfunction is detected according to communications with the inverter. Malfunction Detection Malfunction...
  • Page 349 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Was the PCB (A1P) replaced with a spare PCB? Is the model setting of the Make correct setting of spare PCB...

  • Page 350: U0 " Outdoor Unit: Refrigerant Shortage Alert

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.47 “ ” Outdoor Unit: Refrigerant Shortage Alert Remote Controller Display Applicable REYQ8P~48P Models Method of Detect refrigerant shortage based on the temperature difference between low pressure or suction pipe Malfunction and heat exchanger. Detection Malfunction [In cooling mode]...
  • Page 351 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. In cooling mode (1) Set up a pressure gauge at the service port on the low pressure side.

  • Page 352: U1 " Reverse Phase, Open Phase

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.48 “ ” Reverse Phase, Open Phase Remote Controller Display Applicable REYQ8P~48P Models Method of The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged. Malfunction Detection Malfunction...

  • Page 353: U2 " Outdoor Unit: Power Supply Insufficient Or Instantaneous Failure

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.49 “ ” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable REYQ8P~48P Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 354 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check for power supply voltage. Onsite causes. Voltage between Make proper wire connections phases: 380 to without open phase, erroneous 415V.
  • Page 355 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting <Single> <Multi> Check for connector connections: Remove and Check for connector connections: Remove and insert the connectors shown below. insert the connectors shown below. Furthermore, check the connectors for terminal Furthermore, check the connectors for terminal conditions and continuity.

  • Page 356: U3 " Outdoor Unit: Check Operation Is Not Executed

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.50 “ ” Outdoor Unit: Check Operation is not Executed Remote Controller Display Applicable REYQ8P~48P Models Method of Check operation is executed or not executed Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation. Decision Conditions Supposed...

  • Page 357: U4 " Malfunction Of Transmission Between Indoor Units And Outdoor Units

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.51 “ ” Malfunction of Transmission between Indoor Units and Outdoor Units Remote Controller Display Applicable All indoor unit models REYQ8P~48P Models Method of Check if the transmission between indoor unit and outdoor unit is correctly executed using micro-computer.
  • Page 358 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the detailed malfunction status in the monitor mode. (Refer to P.257~P.258 for how to check.) In Confirmation of Go on to the next page.
  • Page 359 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Continued from the previous page In Confirmation of malfunction 4, LED lamp indicates as follows: Start operation of all the indoor units.

  • Page 360: U5 " Indoor Unit: Malfunction Of Transmission Between Remote Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.52 “ ” Indoor Unit: Malfunction of Transmission between Remote Controller and Indoor Unit Remote Controller Display Applicable All indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using micro-computer is signal transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 361: U7 " Outdoor Unit: Transmission Failure (Across Outdoor Units)

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.53 “ ” Outdoor Unit: Transmission Failure (Across Outdoor Units) Remote Controller Display Applicable All outdoor unit models Models Method of Micro-computer checks if transmission between outdoor units. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision Conditions Supposed...
  • Page 362 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the LED lamps for “Confirmation of malfunction 3” corresponding to the malfunction code “...
  • Page 363 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 1 Confirmation of malfunction 3 Confirmation of malfunction 4 Check if any disconnection or connection error is detected in Correct the connecting wiring connecting wires with external...
  • Page 364 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Cool/Heat selection C/H SELECT of the external is unified.
  • Page 365 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 3 Confirmation of malfunction 3 Confirmation of malfunction 4 Check the connection status of connecting wires of SLAVE 1 with Correct the connecting wires and MASTER.
  • Page 366 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 6 Confirmation of malfunction 3 Confirmation of malfunction 4 Are manual address settings (of the Correct the manual address slave units 1 and 2) correct in order to settings.

  • Page 367: U8 " Indoor Unit: Malfunction Of Transmission Between Main And Sub Remote Controllers

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.54 “ ” Indoor Unit: Malfunction of Transmission between Main and Sub Remote Controllers Remote Controller Display Applicable All indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using micro-computer if signal transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 368: U9 " Indoor Unit: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.55 “ ” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable All indoor unit models REYQ8P~48P Models Method of Detect malfunction signal for the other indoor units within the circuit by outdoor unit PCB. Malfunction Detection Malfunction...

  • Page 369: Ua " Improper Combination Of Indoor And Outdoor Units

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.56 “ ” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display Applicable All indoor unit models REYQ8P~48P Models Method of A difference occurs in data by the type of refrigerant between indoor and outdoor units. The number of indoor units is out of the allowable range.
  • Page 370 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the LED lamps for “Confirmation of malfunction 3” corresponding to the malfunction code “...
  • Page 371 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 1 Confirmation of malfunction 3 Confirmation of malfunction 4 The number of indoor units connected to the Replace the main PCB of the same refrigerant circuit...
  • Page 372 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 3 Confirmation of malfunction 3 Confirmation of malfunction 4 Check if the Check if the unit outdoor unit PCB is not connected...
  • Page 373 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 5 Confirmation of malfunction 3 Confirmation of malfunction 4 Is the model BSVQ-P Connect the model BSVQ-P.
  • Page 374 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 7 Confirmation of malfunction 3 Confirmation of malfunction 4 Is the wiring between Correct the connection wiring.

  • Page 375: Uc " Address Duplication Of Centralized Controller

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.57 “ ” Address Duplication of Centralized Controller Remote Controller Display Applicable All indoor unit models Models Centralized controller Method of The principal indoor unit detects the same address as that of its own on any other indoor unit. Malfunction Detection Malfunction...

  • Page 376: Ue " Malfunction Of Transmission Between Centralized

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.58 “ ” Malfunction of Transmission between Centralized Controller and Indoor Unit Remote Controller Display Applicable All indoor unit models intelligent Touch Controller Centralized controller Models Schedule timer Method of Micro-computer checks if transmission between indoor unit and centralized controller is normal. Malfunction Detection Malfunction...
  • Page 377 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check the indoor unit for which “ ” is displayed. Is Continued to A the transmission (on the following page) malfunction (UE) caused...
  • Page 378 Troubleshooting by Indication on the Remote Controller SiBE37-701_B Troubleshooting Check the transmission wiring between Abnormal centralized Correct the wiring. controller for any broken wire. ( ∗ 1) Normal Has the master unit central setting connector Correct the connection of the been connected? connector.

  • Page 379: Uf " System Is Not Set Yet

    SiBE37-701_B Troubleshooting by Indication on the Remote Controller 3.59 “ ” System is not Set yet Remote Controller Display Applicable All indoor unit models Models REYQ8P~48P Method of On check operation, the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature.

  • Page 380: Uh " Malfunction Of System, Refrigerant System Address Undefined

    Troubleshooting by Indication on the Remote Controller SiBE37-701_B 3.60 “ ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All indoor unit models REYQ8P~48P Models Method of Detect an indoor unit with no address setting. Malfunction Detection Malfunction The malfunction decision is made as soon as the abnormality aforementioned is detected.
  • Page 381 SiBE37-701_B Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is electricity being Does a malfunction introduce for the first occur even after 12 time after installation minutes elapses from the Normal...

  • Page 382: Troubleshooting (Op: Centralized Remote Controller)

    Troubleshooting (OP: Centralized Remote Controller) SiBE37-701_B 4. Troubleshooting (OP: Centralized Remote Controller) “ ” PCB Defect Remote Controller Display Applicable Centralized remote controller intelligent Touch Controller Schedule timer Models Method of Detect an abnormality in the DIII-NET polarity circuit. Malfunction Detection Malfunction When + polarity and - polarity are detected at the same time.

  • Page 383: M8 " Malfunction Of Transmission Between Optional Controllers For Centralized Control

    SiBE37-701_B Troubleshooting (OP: Centralized Remote Controller) “ ” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller intelligent Touch Controller Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. (The system will be automatically reset.) Malfunction Detection...

  • Page 384: Ma " Improper Combination Of Optional Controllers For Centralized Control

    Troubleshooting (OP: Centralized Remote Controller) SiBE37-701_B “ ” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller intelligent touch controller Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction When the schedule timer is set to individual use mode, other central component is present.
  • Page 385 SiBE37-701_B Troubleshooting (OP: Centralized Remote Controller) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Not available for combined use with the remote control Has the remote control adaptor. Dismount the remote adaptor (KRP2A series) control adaptor, and then been connected?

  • Page 386: Mc " Address Duplication, Improper Setting

    Troubleshooting (OP: Centralized Remote Controller) SiBE37-701_B “ ” Address Duplication, Improper Setting Remote Controller Display Applicable Centralized remote controller intelligent Touch Controller Models Schedule timer Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction Two or more units of centralized remote controllers and intelligent Touch Controllers are connected, and all of them are set to master unit central setting or slave unit central setting.

  • Page 387: Troubleshooting (Op: Unified On/Off Controller)

    SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) 5. Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All indoor unit models Unified ON/OFF controller Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction...
  • Page 388 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is a malfunction code Diagnose the cause with the displayed on the remote air conditioner's failure controller? diagnosis manual.

  • Page 389: Display "Under Centralized Control" Blinks (Repeats Single Blink)

    SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Centralized Control” Blinks (Repeats Single Blink) Remote “under centralized control” (Repeats single blink) Controller Display Applicable Unified ON/OFF controller Centralized remote controller, Schedule timer Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction...
  • Page 390 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has a once connected optional controller for Reset power supply centralized control been simultaneously for all optional disconnected or its address changed? controllers for centralized...
  • Page 391 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) Is the wiring adaptor for Cannot be used in electrical appendices combination with a wiring connected? adaptor for electrical appendices. Remove the wiring adaptor for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously.

  • Page 392: Display "Under Centralized Control" Blinks (Repeats Double Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B Display “Under Centralized Control” Blinks (Repeats Double Blink) Remote “under centralized control” (Repeats double blink) Controller Display Applicable Unified ON/OFF controller Models Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction When no central control addresses are set to indoor units.
  • Page 393 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 1] Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.
  • Page 394 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B [CHECK 3] Check the Factors of Overheat Operation Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. Hot gas circuit clogging Faulty hot Defective solenoid gas bypass ← Check if coil resistance and insulation valve coil control are normal.
  • Page 395 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 4] Power Transistor Check Perform the following procedures prior to check. (1) Power Off. (2) Remove all the wiring connected to the PCB where power transistors are mounted on. * Preparing a tester in the analog system is recommended. [Preparation] A tester in the digital system with diode check function will be usable.
  • Page 396 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B [CHECK 5] Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. ← Stop valve closed Check to be sure the stop valve is open. Local High pipe ←...
  • Page 397 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 6] Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] ← Are the electrical characteristics normal? Faulty low pressure sensor (See *1.) Faulty compressor...
  • Page 398 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B [CHECK 7] Broken Wire Check of the Connecting Wires 1. Procedure for checking outdoor-outdoor unit transmission wiring for broken wires On the system shown below, turn OFF the power supply to all equipment, short-circuit between the outdoor-outdoor unit terminal parts F1 and F2 in the "Outdoor Unit A"...
  • Page 399 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) [CHECK 8] Master Unit Central Connector Setting Table The master unit central setting connector (CN1/X1A) is mounted at the factory. • To independently use a single unit of the intelligent Touch Controller or a single unit of the centralized remote controller, do not dismount the master unit central setting connector (i.e., use the connector with the factory setting unchanged).
  • Page 400 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B [CHECK 9] Master-Slave Unit Setting Table Combination of intelligent Touch Controller and Centralized Remote Controller Slave Master ∗ Pattern Master/ Master/ Master/ Master/ 1-00~4-15 5-00~8-15 1-00~4-15 5-00~8-15 Slave Slave Slave Slave Master Master Slave Slave Master —...
  • Page 401 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) [Check 10] Check for causes of wet operation. Referring to the Fault Tree Analysis (FTA) shown below, identify faulty points. Faulty crankcase heater Refrigerant accumulation Frequent ON/OFF of compressor ← Refer to information in the [Check 6] Overcharge of refrigerant section.
  • Page 402 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B [Check 11] Check for overcharge of refrigerant. In case of VRV Systems, the only way to judge as the overcharge of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgement, refer to information provided below.
  • Page 403 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) [Check 12] Check for shortage of refrigerant. In case of VRV Systems, the only way to judge as the shortage of refrigerant is with operating conditions due to the relationship to pressure control and electronic expansion valve control. As information for making a judgement, refer to information provided below.
  • Page 404 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B [Check 13] Vacuuming and dehydration procedure Conduct vacuuming and dehydration in the piping system following the procedure for <Normal vacuuming and dehydration> described below. Furthermore, if moisture may get mixed in the piping system, follow the procedure for <Special vacuuming and dehydration>...
  • Page 405 SiBE37-701_B Troubleshooting (OP: Unified ON/OFF Controller) [Check 14] List of inverter-related malfunction codes Code Name Condition for determining malfunction Major cause Instantaneous overcurrent of • Inverter output current exceeds 32.3A even • Liquid sealing inverter compressor instantaneously. • Faulty compressor •...
  • Page 406 Troubleshooting (OP: Unified ON/OFF Controller) SiBE37-701_B [Check 15] Concept of inverter-related malfunction codes Transmission error When transmissions between the main PCB and the inverter PCB are not normal Main (Control) PCB Instantaneous overcurrent of inverter compressor (When inverter output current exceeds 32.3A even instantaneously) Overcurrent of inverter compressor (1)An overcurrent of 19.0A or more continues...

  • Page 407: Part 7 Appendix

    SiBE37-701_B Part 7 Appendix 1. Piping Diagrams..................397 1.1 Outdoor Unit ..................397 1.2 Indoor Unit....................402 1.3 BS Unit ....................407 2. Wiring Diagrams for Reference............408 2.1 Outdoor Unit ..................408 2.2 Field Wiring ..................413 2.3 Indoor Unit....................416 2.4 BS Unit ....................429 3. List of Electrical and Functional Parts ..........431 3.1 Outdoor Unit ..................431 3.2 Indoor Side ...................435 4.

  • Page 408: Piping Diagrams

    Piping Diagrams SiBE37-701_B 1. Piping Diagrams Outdoor Unit REYQ8P / 10P / 12P Appendix...
  • Page 409 SiBE37-701_B Piping Diagrams REYQ14P / 16P Appendix...
  • Page 410 Piping Diagrams SiBE37-701_B REMQ8P Appendix...
  • Page 411 SiBE37-701_B Piping Diagrams REMQ10P, 12P Appendix...
  • Page 412 Piping Diagrams SiBE37-701_B REMQ14P, 16P Appendix...

  • Page 413: Indoor Unit

    SiBE37-701_B Piping Diagrams Indoor Unit FXFQ-P HEAT EXCHANGER LIQUID PIPE CONNECTION PORT FILTER FILTER ELECTRONIC EXPANSION VALVE GAS PIPE CONNECTION PORT REFRIGERANT FLOW COOLING HEATING REFRIGERANT PIPE CONNECTION PORT DIAMETERS MODEL LIQUID φ 12.70 φ FXFQ20, 25, 32, 40, 50P 6.35 φ...
  • Page 414 Piping Diagrams SiBE37-701_B FXZQ Gas pipe connection port Heat exchanger (flare connection) Liquid pipe connection port (flare connection) Filter Electronic Filter expansion valve Th1: Thermistor for suction air temp. Th2: Thermistor for liquid line temp. Th3: Thermistor for gas line temp. 4D040157 Refrigerant pipe connection port diameters (mm)
  • Page 415 SiBE37-701_B Piping Diagrams FXCQ, FXDQ25/25-M, FXSQ HEAT EXCHANGER LIQUID PIPE CONNECTION PORT FILTER FILTER ELECTRONIC EXPANSION VALVE GAS PIPE CONNECTION PORT REFRIGERANT FLOW COOLING HEATING Refrigerant pipe connection port diameters Model Liquid φ12.70 φ6.35 FXSQ20, 25, 32, 40, 50 φ15.90 φ9.52 FXSQ63, 80, 100, 125 φ12.70...
  • Page 416 Piping Diagrams SiBE37-701_B FXKQ-MA, FXHQ-MA, FXLQ-MA, FXNQ-MA, FXMQ-MA Gas piping connection port Heat exchanger Flare connection : φ15.9 or less Attached piping : Above φ19.1 Liquid piping connection port (Flare connection) Electronic Filter Filter expansion valve Code Name Code Main function Used for gas superheated degree control while in Electronic expansion valve cooling operation or subcooled degree control while...
  • Page 417 SiBE37-701_B Piping Diagrams FXDQ-NB, PB Gas side Liquid side Electronic expansion valve Filter Filter Indoor heat exchanger 4D060927 Refrigerant pipe connection port diameters (mm) Model Liquid FXDQ20NB, PB / 25NB, PB / 32NB, PB / φ12.7 φ6.4 40NB / 50NBVE φ15.9 φ9.5 FXDQ63NBVE...

  • Page 418: Bs Unit

    Piping Diagrams SiBE37-701_B BS Unit Liquid pipe Liquid pipe connection port connection port Electronic expansion valve (EVSC) Capillary tube Electronic expansion valve (EVHS) Gas pipe connection port Electronic expansion valve (EVH) Dual gas pipe connection port Electronic expansion valve (EVLS) Suction gas pipe connection port Electronic...

  • Page 419: Wiring Diagrams For Reference

    SiBE37-701_B Wiring Diagrams for Reference 2. Wiring Diagrams for Reference Outdoor Unit REYQ8P / 10P / 12PY1B Appendix...
  • Page 420 Wiring Diagrams for Reference SiBE37-701_B REYQ14P / 16PY1B Appendix...
  • Page 421 SiBE37-701_B Wiring Diagrams for Reference REMQ8P7Y1B Appendix...
  • Page 422 Wiring Diagrams for Reference SiBE37-701_B REMQ10P / 12P7Y1B Appendix...
  • Page 423 SiBE37-701_B Wiring Diagrams for Reference REMQ14P / 16P7Y1B Appendix...

  • Page 424: Field Wiring

    Wiring Diagrams for Reference SiBE37-701_B Field Wiring REYQ8P / 10P / 12P / 14P / 16PY1B Appendix...
  • Page 425 SiBE37-701_B Wiring Diagrams for Reference REYQ18P / 20P / 22P / 24P / 26P / 28P / 30P / 32P7Y1B Appendix...
  • Page 426 Wiring Diagrams for Reference SiBE37-701_B REYQ34P / 36P / 38P / 40P / 42P / 44P / 46P / 48P7Y1B Appendix...

  • Page 427: Indoor Unit

    SiBE37-701_B Wiring Diagrams for Reference Indoor Unit FXFQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125P8VEB 20~125-CLASS M1P M ~ H05VV-U3G2.5 X24A Indoor X17A X18AX15A X24A X25A Q1DI X27A X35A X33A Receiver/Display unit Control box X33A X35A...
  • Page 428 Wiring Diagrams for Reference SiBE37-701_B FXZQ20M / 25M / 32M / 40M / 50M9V1B 20, 25, 32, 40, 50 CLASS (22, 28, 36, 45, 56 CLASS) t° t° t° POWER SUPPLY INPUT FROM OUTSIDE 220-240V X23A X13A X12A X11A (SEE NOTE 4) (SEE 50Hz TRANSMISSION WIRING CENTRAL...
  • Page 429 SiBE37-701_B Wiring Diagrams for Reference FXCQ20M / 25M / 32M / 63M8V3B 20,25,32,63 CLASS 1N~50Hz 230V (22,28,36,71 CLASS) indoor SWITCH BOX X1M L N t° t° t° X18A X13A X12A X11A X9A X8A INPUT FROM OUTSIDE (Note 3) t° TO CENTRAL REMOTE CONTROLLER (Note 1) WIRED REMOTE CONTROLLER...
  • Page 430 Wiring Diagrams for Reference SiBE37-701_B FXCQ40M / 50M / 80M / 125M8V3B 1N~50Hz 230V 40, 50, 80, 125 CLASS (45, 56, 90, 140 CLASS) indoor SWITCH BOX X1M L N t° t° t° COLORS: BLK : BLACK X18A X13A X12A X11A X9A X8A BLU : BLUE BRN : BROWN INPUT FROM...
  • Page 431 SiBE37-701_B Wiring Diagrams for Reference FXKQ25MA / 32MA / 40MA / 63MAVE Appendix...
  • Page 432 Wiring Diagrams for Reference SiBE37-701_B FXDQ20PB / 25PB / 32PB / 40NB / 50NB / 63NBVE t° t° t° POWER SUPPLY Note: 3 ~220-240V~220V X13A X12A X11A X16A Input from outside 50Hz 60Hz Note: 1 Transmission wiring X30A central remote control X31A t°...
  • Page 433 SiBE37-701_B Wiring Diagrams for Reference FXDQ20M / 25M9V3B COMPRESSOR : NEUTRAL : LIVE OPERATION : CONNECTOR : WIRE CLAMP indoor Q1E F2U : PROTECTIVE EARTH (SCREW) 1N~50Hz 230V FIELD WIRING OPERATION F1U RyH Y2 t° t° t° SWITCH BOX X13A X12A X11A X8A X16A X18A...
  • Page 434 Wiring Diagrams for Reference SiBE37-701_B FXSQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125P7VEB R2T R3T Indoor 1N~220-240V 50Hz t° t° t° GRN/YLW 1N~220V 60Hz YLW YLW N=1 RED X16A X18A X17A X15A X25A Q1D1...
  • Page 435 SiBE37-701_B Wiring Diagrams for Reference FXMQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125P / 140PVE Appendix...
  • Page 436 Wiring Diagrams for Reference SiBE37-701_B FXMQ200MA / 250MAVE Appendix...
  • Page 437 SiBE37-701_B Wiring Diagrams for Reference FXHQ32MA / 63MA / 100MAVE Appendix...
  • Page 438 Wiring Diagrams for Reference SiBE37-701_B FXAQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE9 Appendix...
  • Page 439 SiBE37-701_B Wiring Diagrams for Reference FXLQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE FXNQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE Appendix...

  • Page 440: Bs Unit

    Wiring Diagrams for Reference SiBE37-701_B BS Unit BSV4Q100PV1 Appendix...
  • Page 441 SiBE37-701_B Wiring Diagrams for Reference BSV6Q100PV1 Appendix...

  • Page 442: List Of Electrical And Functional Parts

    List of Electrical and Functional Parts SiBE37-701_B 3. List of Electrical and Functional Parts Outdoor Unit 3.1.1 REYQ8PY1~12PY1 Model Item Name Symbol REYQ8PY1 REYQ10PY1 REYQ12PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type STD 2...
  • Page 443 SiBE37-701_B List of Electrical and Functional Parts 3.1.2 REYQ14PY1~16PY1 Model Item Name Symbol REYQ14PY1 REYQ16PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type JT170G-KYE@T STD 2 OC protection 15.0A device OC protection Fan motor M1F, M2F 1.2A...
  • Page 444 List of Electrical and Functional Parts SiBE37-701_B 3.1.3 REMQ8PY1~12PY1 Model Item Name Symbol REMQ8PY1 REMQ10PY1 REMQ12PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type — JT170G-KYE@T Compressor STD 1 OC protection — 15.0A device Type — — STD 2 OC protection —...
  • Page 445 SiBE37-701_B List of Electrical and Functional Parts 3.1.4 REMQ14PY1~16PY1 Model Item Name Symbol REMQ14PY1 REMQ16PY1 Type JT1GCVDKYR@SA Inverter OC protection 14.7A device Type JT170G-KYE@T Compressor STD 1 OC protection 15.0A device Type JT170G-KYE@T STD 2 OC protection 15.0A device OC protection Fan motor M1F, M2F 1.2A...

  • Page 446: Indoor Side

    List of Electrical and Functional Parts SiBE37-701_B Indoor Side 3.2.1 Indoor Unit Model Parts Name Symbol Remark FXFQ25 FXFQ32 FXFQ40 FXFQ50 FXFQ63 FXFQ80 FXFQ100 FXFQ125 Wired Remote BRC1E51 Controller Remote Option Controller Wireless Remote BRC7F634F Controller Fan Motor DC280V 56W 8P DC 320V 120W 8P AC220-240V (50Hz) AC220V (60Hz) Drain Pump...
  • Page 447 SiBE37-701_B List of Electrical and Functional Parts Model Parts Name Symbol Remark FXZQ FXZQ FXZQ FXZQ FXZQ 20MV1 25MV1 32MV1 40MV1 50MV1 Wired Remote BRC1E51 Controller Remote Option Controller Wireless Remote BRC7E530 Controller AC 220~240V 50Hz 1 φ 55W 4P Fan Motor ±5 ±20...
  • Page 448 List of Electrical and Functional Parts SiBE37-701_B Model Parts Name Symbol Remark FXDQ FXDQ FXDQ FXDQ FXDQ FXDQ 20PBVE 25PBVE 32PBVE 40NBVE 50NBVE 63NBVE Wired Remote BRC1E51 Controller Remote Option Controller Wireless Remote BRC4C65 Controller AC 220~240V 50Hz 1 φ 62W 1 φ...
  • Page 449 SiBE37-701_B List of Electrical and Functional Parts Model Parts Name Symbol Remark FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ FXMQ 20PVE 25PVE 32PVE 40PVE 50PVE 63PVE 80PVE 100PVE 125PVE 140PVE Wired Remote BRC1E51 Controller Remote Controller Wireless Remote BRC4C65 Controller Fan Motor...
  • Page 450 List of Electrical and Functional Parts SiBE37-701_B Model Parts Name Symbol Remark FXAQ FXAQ FXAQ FXAQ FXAQ FXAQ 20PV1 25PV1 32PV1 40PV1 50PV1 63PV1 Wired Remote BRC1E51 Controller Remote Option Controller Wireless Remote BRC7E618 Controller AC 220~240V 50Hz 1 φ 40W 1 φ...

  • Page 451: Option List

    SiBE37-701_B Option List 4. Option List Option List of Controllers Operation Control System Optional Accessories Type FXDQ-NB FXLQ-MA FXFQ-P FXCQ-M FXKQ-MA FXUQ-M FXSQ-P FXMQ-MA FXMQ-P FXHQ-MA FXAQ-P FXDQ-PB FXNQ-MA Item Wireless BRC7F634F BRC7C62 BRC4C61 BRC4C65 BRC7C528W BRC4C62 BRC4C65 BRC7E63W BRC7E618 BRC4C62 Remote controller...
  • Page 452 Option List SiBE37-701_B Building Management System Part name Model No. Function intelligent Touch • Air-Conditioning management system that can be controlled by a Basic Hardware DCS601C51 Controller compact all-in-one unit. Hardware DIII-NET plus adaptor DCS601A52 • Additional 64 groups (10 outdoor units) is possible. intelligent Touch Controller P.

  • Page 453: Option Lists (Outdoor Unit)

    SiBE37-701_B Option List Option Lists (Outdoor Unit) REYQ8 ~ 16PY1 Series VRV III H/R REYQ10PY1 REYQ12PY1 REYQ8PY1 Models REYQ14PY1 Optional accessories REYQ16PY1 KHRP25M33H KHRP25M33H, KHRP25M72H REFNET header Model (Max. 8 branch) (Max. 8 branch) (Max. 8 branch) KHRP25A22T, KHRP25A33T REFNET joint Model KHRP25A22T, KHRP25A33T (KHRP25A72T+KHRP25M72TP)

  • Page 454: Piping Installation Point

    Piping Installation Point SiBE37-701_B 5. Piping Installation Point Piping Installation Point 5m or less than 5m Maximum length from a connection Connection Connection kit. 10m or less from first branch. Kit A Kit B (Equivalent Piping Length 13m) Since there is a possibility that oil may be collected on a stop machine side, install piping between outdoor units to go to level or go up to an outdoor unit, and to make a slope.

  • Page 455: The Example Of A Wrong Pattern

    SiBE37-701_B Piping Installation Point The Example of a Wrong Pattern Wrong Oil is collected to the outdoor unit at the time of a stop, because of bottom omission of piping. (V3039) Wrong Oil is collected to the low level outdoor unit at the time of a stop, because of downward slope of piping.
  • Page 456 Piping Installation Point SiBE37-701_B Appendix...

  • Page 457: Example Of Connection

    SiBE37-701_B Example of connection 6. Example of connection Example of connection Branch with REFNET joint Branch with REFNET joint and header Branch with REFNET header (Connection of 8 indoor units) Outdoor unit Outdoor unit Outdoor unit REFNET joint (A, B) Outdoor Indoor REFNET header...
  • Page 458 Example of connection SiBE37-701_B How to select the REFNET joint How to select the REFNET header Outdoor unit multi connection piping kit and • When using REFNET joint at the first branch counted from the outdoor unit side, • Choose from the following table in accordance with the total capacity index of Refrigerant branch kit selection choose from the following table in accordance with the outdoor unit capacity type.
  • Page 459 SiBE37-701_B Example of connection How to calculate the HEAT RECOVER SYSTEM REFRIGERANT AMOUNT FOR Total length(m) Total length(m) additional refrigerant MODEL NAME THE AMOUNT OF REFRIGERANT EXCEEDING CONNECTION of liquid piping ×0.37 of liquid piping ×0.26 to be charged CAPACITY OF INDOOR UNIT REYQ8 ~ 16PY1 3.6kg size at φ...
  • Page 460 Example of connection SiBE37-701_B Appendix...

  • Page 461: Thermistor Resistance / Temperature Characteristics

    SiBE37-701_B Thermistor Resistance / Temperature Characteristics 7. Thermistor Resistance / Temperature Characteristics Indoor unit For suction air For liquid pipe For gas pipe Outdoor unit for fin thermistor R1T Outdoor unit For outdoor air For coil For suction pipe For Receiver gas pipe For Receiver outlet liquid pipe k Ω...
  • Page 462 Thermistor Resistance / Temperature Characteristics SiBE37-701_B Outdoor Unit Thermistors for Discharge Pipe ∼ (R3T, R31 33T) k Ω k Ω k Ω k Ω k Ω k Ω T°C T°C T°C T°C T°C T°C 640.44 624.65 72.32 50.5 70.96 13.35 100.5 13.15 609.31...

  • Page 463: Pressure Sensor

    SiBE37-701_B Pressure Sensor 8. Pressure Sensor = 4.1V -2.05 : Output Voltage [High Side] V = 7/3 × V -7/6 : Output Voltage [Low Side] V : High pressure (MPa) Detected Pressure : Low pressure (MPa) (kg/cm ) MPa 127.5 12.5 122.4 12.0...

  • Page 464: Method Of Checking The Inverter's Power Transistors And Diode Modules

    Method of Checking the Inverter’s Power Transistors and Diode Modules SiBE37-701_B 9. Method of Checking the Inverter’s Power Transistors and Diode Modules Method of Checking the Inverter’s Power Transistors and Diode Modules Checking failures in power semiconductors mounted on inverter PCB Check the power semiconductors mounted on the inverter PCB by the use of a multiple tester.
  • Page 465 SiBE37-701_B Method of Checking the Inverter’s Power Transistors and Diode Modules 1. Power module checking When using the analog type of multiple When using the digital type of multiple tester, make measurement in resistance tester, make measurement in diode check measurement mode in the x1k Ω...

  • Page 466: Part 8 Precautions For New Refrigerant (R-410A)

    SiBE37-701_B Part 8 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........456 1.1 Outline ....................456 1.2 Refrigerant Cylinders................458 1.3 Service Tools..................459 Precautions for New Refrigerant (R-410A)

  • Page 467: Precautions For New Refrigerant (R-410A)

    SiBE37-701_B Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) Outline 1.1.1 About Refrigerant R-410A Characteristics of new refrigerant, R-410A 1. Performance Almost the same performance as R-22 and R-407C 2. Pressure Working pressure is approx. 1.4 times more than R-22 and R-407C. 3.
  • Page 468 Precautions for New Refrigerant (R-410A) SiBE37-701_B Thermodynamic characteristic of R-410A DAIREP ver2.0 Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (°C) (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/kgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor 36.13 36.11...

  • Page 469: Refrigerant Cylinders

    SiBE37-701_B Precautions for New Refrigerant (R-410A) Refrigerant Cylinders Cylinder specifications • The cylinder is painted refrigerant color (pink). • The cylinder valve is equipped with a siphon tube. Cylinder Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.

  • Page 470: Service Tools

    Precautions for New Refrigerant (R-410A) SiBE37-701_B Service Tools R-410A is used under higher working pressure, compared to previous refrigerants (R-22, R-407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R-22, R-407C) can not be used for products that use new refrigerants.
  • Page 471 SiBE37-701_B Precautions for New Refrigerant (R-410A) 1. Flaring tool Flare gauge Specifications • Dimension A Unit:mm Tube O.D. − Nominal size Class-2 (R-410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3 Differences • Change of dimension A Dimension A For class-1: R-407C For class-2: R-410A...
  • Page 472 Precautions for New Refrigerant (R-410A) SiBE37-701_B 2. Torque wrench Specifications • Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes Differences • Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B...
  • Page 473 SiBE37-701_B Precautions for New Refrigerant (R-410A) 4. Leak tester Specifications • Hydrogen detecting type, etc. • Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. Differences • Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5.
  • Page 474 Precautions for New Refrigerant (R-410A) SiBE37-701_B • Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences • Change in pressure • Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) Specifications •...
  • Page 475 SiBE37-701_B Precautions for New Refrigerant (R-410A) 9. Weigher for refrigerant charge Specifications • High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g • Equipped with pressure-resistant sight glass to check liquid refrigerant charging. •...
  • Page 476 Revision History Date News No. Contents 2010/9/10 M-10011 Correction of service manual...
  • Page 477 Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the Warning world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used.

Table of Contents