Daikin RTSQ20PY1 Service Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Heat Pump
  5. RTSQ20PY1
  6. Service manual

Daikin RTSQ20PY1 Service Manual

Vrv iii-c r-410a heat pump 50hz
Hide thumbs Also See for RTSQ20PY1:
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
Table of Contents

Advertisement

Quick Links

SiBE31-801_C
Service
Manual
RTSQ10-20PY1
R-410A Heat Pump 50Hz

Advertisement

Table of Contents
loading

Related Manuals for Daikin RTSQ20PY1

Summary of Contents for Daikin RTSQ20PY1

  • Page 1 SiBE31-801_C Service Manual RTSQ10-20PY1 R-410A Heat Pump 50Hz...

  • Page 2: Table Of Contents

    SiBE31-801_C R-410A Heat Pump 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 and Function Units ............4 3.
  • Page 3 SiBE31-801_C 3.2 Crankcase Heater Control..............85 4. Rotation Control ..................86 4.1 Rotation of Outdoor Units...............86 4.2 Operating Priority and Rotation of Compressors........86 5. Startup Control ..................87 5.1 Startup Control in Cooling Operation .............87 5.2 Startup Control in Heating Operation .............88 5.3 Startup Control of Function Unit (only for heating operation at low outdoor air temperature) ....89 6.
  • Page 4 SiBE31-801_C Part 6 Troubleshooting ............. 194 1. Check Items for Service ..............197 1.1 For Troubleshooting ................197 1.2 Precautions for Service ................197 2. Symptom-based Troubleshooting ............199 3. Troubleshooting by Remote Controller ..........202 3.1 The INSPECTION / TEST Button............202 3.2 Self-diagnosis by Wired Remote Controller .........203 3.3 Self-diagnosis by Wireless Remote Controller ........204 3.4 Remote Controller Service Mode ............207 3.5 Inspection Mode ...................210...
  • Page 5 SiBE31-801_C 4.28 “J5” Outdoor Unit: Malfunction of Thermistor (R8T) for Suction Pipe ..................265 4.29 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger ..............266 4.30 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T or R9T) ..................267 4.31 “J8”...
  • Page 6 SiBE31-801_C 6. Troubleshooting (OP: Unified ON/OFF Controller) ......328 6.1 Operation Lamp Blinks .................328 6.2 Display “Under Centralized Control” Blinks (Repeats Single Blink) ..330 6.3 Display “Under Centralized Control” Blinks (Repeats Double Blink) ..333 7. Troubleshooting (Heat Reclaim Ventilation)........334 7.1 “60” Error of External Protection Device ..........334 7.2 “64”, “65”...

  • Page 7: Introduction

    SiBE31-801_C 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 SiBE31-801_C 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 SiBE31-801_C 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 SiBE31-801_C 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-C series Heat Pump 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

    SiBE31-801_C 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 and Function Units ............4 3. Model Selection..................5 4. Features of This Model Series ..............7 General Information...

  • Page 13: Model Names Of Indoor/Outdoor Units

    SiBE31-801_C Model Names of Indoor/Outdoor Units 1. Model Names of Indoor/Outdoor Units 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 14: External Appearance

    External Appearance SiBE31-801_C 2. External Appearance Indoor Units Roundflow Ceiling Mounted Cassette Concealed Ceiling Unit (Large) FXFQ20P FXMQ200MA FXFQ25P FXMQ250MA FXFQ32P FXFQ40P FXFQ50P FXFQ63P FXFQ80P FXFQ100P FXFQ125P 600×600 4-Way Blow Ceiling Suspended Unit Ceiling Mounted Cassette FXHQ32MA FXHQ63MA FXZQ20M FXHQ100MA FXZQ25M FXZQ32M FXZQ40M...

  • Page 15: Outdoor Units And Function Units

    SiBE31-801_C External Appearance Outdoor Units and Function Units 10HP System 14HP System RTSYQ14PY1 RTSYQ10PY1 Outdoor unit Function unit Function unit Outdoor unit (RTSQ14PY1) (BTSQ20PY1) (BTSQ20PY1) (RTSQ10PY1) 16HP System 20HP System RTSYQ16PY1 RTSYQ20PY1 Outdoor unit 1 (RTSQ8PY1) Outdoor unit Function unit Function unit (RTSQ16PY1) (BTSQ20PY1)

  • Page 16: Model Selection

    Model Selection SiBE31-801_C 3. Model Selection VRV III-C Heat Pump Series Connectable indoor units number and capacity 10HP 14HP 16HP 20HP System name RTSYQ10PY1 RTSYQ14PY1 RTSYQ16PY1 RTSYQ20PY1 Outdoor unit 1 RTSQ10PY1 RTSQ14PY1 RTSQ16PY1 RTSQ8PY1 Outdoor unit 2 – – – RTSQ12PY1 Function unit BTSQ20PY1...
  • Page 17 SiBE31-801_C Model Selection Indoor unit capacity New refrigerant model code P100 P125 P140 P200 P250 type type type type type type type type type type type type Selecting model capacity 11.2 14.0 16.0 22.4 28.0 Equivalent output 0.8HP 1.25HP 1.6HP 2.0HP 2.5HP 3.2HP 10HP Use the above tables to determine the capacities of indoor units to be connected.

  • Page 18: Features Of This Model Series

    Features of This Model Series SiBE31-801_C 4. Features of This Model Series This Model Series feature efficient heating operation conducted by adopting the "Two-stage Compression System" at low outdoor temperatures. <Two-stage Compression System> This is a system to conduct efficient heating operation by two-stage compression with two compressors connected in series.

  • Page 19: Part 2 Specifications

    SiBE31-801_C Part 2 Specifications 1. Specifications ..................9 1.1 Outdoor Units ...................9 1.2 Indoor Units ....................13 1.3 BS Units ....................52 Specifications...

  • Page 20: Specifications

    Specifications SiBE31-801_C 1. Specifications Outdoor Units Heat Pump 50Hz <RTSYQ-P> Model Name RTSYQ10PY1 Outdoor Unit RTSQ10PY1 Independent Unit Function Unit BTSQ20PY1 ★ 1 Cooling Capacity 28.0 ★ 2 Heating Capacity 31.5 ★ 3 Heating Capacity (-10°CWB) 28.0 Casing Color Ivory White 5Y7.5/1 Dimensions: (H×W×D) (1,680×930×765)+(1,570×460×765) Heat Exchanger...
  • Page 21 SiBE31-801_C Specifications Model Name RTSYQ14PY1 Outdoor Unit RTSQ14PY1 Independent Unit Function Unit BTSQ20PY1 ★ 1 Cooling Capacity (19.5°CWB) 40.0 ★ 2 Cooling Capacity (19.0°CWB) 45.0 ★ 3 Heating Capacity 40.0 Casing Color Ivory White 5Y7.5/1 Dimensions: (H×W×D) (1,680×1,240×765)+(1,570×460×765) Heat Exchanger Cross Fin Coil Type Hermetically Sealed Scroll Type...
  • Page 22 Specifications SiBE31-801_C Model Name RTSYQ16PY1 Outdoor Unit RTSQ16PY1 Independent Unit Function Unit BTSQ20PY1 ★ 1 Cooling Capacity (19.5°CWB) 45.0 ★ 2 Cooling Capacity (19.0°CWB) 50.0 ★ 3 Heating Capacity 45.0 Casing Color Ivory White 5Y7.5/1 Dimensions: (H×W×D) (1,680×1,240×765)+(1,570×460×765) Heat Exchanger Cross Fin Coil Type Hermetically Sealed Scroll Type...
  • Page 23 SiBE31-801_C Specifications Model Name RTSYQ20PY1 Outdoor Unit RTSQ8PY1+RTSQ12PY1 Independent Unit Function Unit BTSQ20PY1 ★ 1 Cooling Capacity (19.5°CWB) 56.0 ★ 2 Cooling Capacity (19.0°CWB) 63.0 ★ 3 Heating Capacity 56.0 Casing Color Ivory White 5Y7.5/1 Dimensions: (H×W×D) (1,680×930×765)×2+(1,570×460×765) Heat Exchanger Cross Fin Coil Type Hermetically Sealed Scroll Type...

  • Page 24: Indoor Units

    Specifications SiBE31-801_C 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 Heating 0.045 0.045 0.045 0.055 0.067 Casing Material Galvanised steel Dimensions Packing Height Width Depth Unit...
  • Page 25 SiBE31-801_C 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 26 Specifications SiBE31-801_C 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 Heating 0.114 0.108 0.176 0.246 Casing Material Galvanised steel Dimensions Packing Height Width Depth Unit...
  • Page 27 SiBE31-801_C 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 28 Specifications SiBE31-801_C 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 Heating 0.064 0.064 0.068 0.080 0.107 Casing Material Galvanised steel Dimensions Unit Height Width Depth Weight...
  • Page 29 SiBE31-801_C 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 30 Specifications SiBE31-801_C 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 31 SiBE31-801_C 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 32 Specifications SiBE31-801_C 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 33 SiBE31-801_C 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 34 Specifications SiBE31-801_C 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 35 SiBE31-801_C 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 Heating 0.046 0.046 0.056 0.085 Casing Material Galvanised steel Dimensions Unit Height...
  • Page 36 Specifications SiBE31-801_C 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 37 SiBE31-801_C 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 Heating 0.067 0.067 0.070 Casing Material Galvanised steel plate Dimensions Unit Height Width Depth Weight Unit Heat Dimensions Nr of Rows Exchanger...
  • Page 38 Specifications SiBE31-801_C 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 39 SiBE31-801_C 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 Heating 0.147 0.152 0.168 Casing Material Galvanised steel plate Dimensions Unit Height Width 1,100 Depth Weight Unit Heat Dimensions Nr of Rows...
  • Page 40 Specifications SiBE31-801_C 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 41 SiBE31-801_C Specifications Concealed Ceiling Unit (Small) 1-1 TECHNICAL SPECIFICATIONS FXDQ20M9V3B FXDQ25M9V3B Capacity Cooling Heating Power Input Cooling 0.050 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 42 Specifications SiBE31-801_C 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 43 SiBE31-801_C 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 Heating 0.061 0.061 0.067 0.180 0.180 Casing Colour Non painted Material Galvanised steel Dimensions Packing Height Width Depth Unit...
  • Page 44 Specifications SiBE31-801_C 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 45 SiBE31-801_C 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 Heating 0.130 0.151 0.235 0.291 Casing Colour Non painted Material Galvanised steel Dimensions Packing Height Width...
  • Page 46 Specifications SiBE31-801_C 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 47 SiBE31-801_C 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 Heating 0.069 0.069 0.073 0.182 0.203 Casing Material Galvanised steel plate Dimensions Unit Height Width 1,000 Depth Weight Unit...
  • Page 48 Specifications SiBE31-801_C 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 Heating 0.218 0.286 0.364 0.449 0.449 Casing Material Galvanised steel plate Dimensions Unit Height Width...
  • Page 49 SiBE31-801_C 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 50 Specifications SiBE31-801_C 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 Heating 1.294 1.465 Casing Material Galvanised steel Dimensions Unit Height Width 1,380 1,380 Depth 1,100 1,100 Weight Unit Heat Dimensions Nr of Rows...
  • Page 51 SiBE31-801_C 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 52 Specifications SiBE31-801_C 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 Heating 0.111 0.115 0.135 Casing Colour White (10Y9/0,5) Dimensions Unit Height Width 1,160 1,400 Depth Weight Unit Heat Dimensions Nr of Rows Exchanger Fin Pitch...
  • Page 53 SiBE31-801_C 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 54 Specifications SiBE31-801_C 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 Heating 0.024 0.027 0.032 0.020 0.032 0.060 Casing Colour white (3.0Y8.5/0.5) Dimensions Unit Height Width 1,050 1,050...
  • Page 55 SiBE31-801_C 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 56 Specifications SiBE31-801_C 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 Heating 0.049 0.049 0.090...
  • Page 57 SiBE31-801_C 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 58 Specifications SiBE31-801_C 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 Heating 0.049 0.049 0.090...
  • Page 59 SiBE31-801_C 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 60 Specifications SiBE31-801_C 4-way Blow Ceiling Suspended Unit 1-1 TECHNICAL SPECIFICATIONS FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Power input Cooling 0.180 0.289 0.289 (Nominal) Heating 0.160 0.269 0.269 Casing Colour White Material Resin Dimensions Packing Height Width Depth Unit Height Width Depth Weight Unit Packed Unit Heat Dimensions Length...
  • Page 61 SiBE31-801_C Specifications 4-way Blow Ceiling Suspended Unit 1-2 ELECTRICAL SPECIFICATIONS FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Power Name Supply Phase Frequency Voltage 220-240 Current Full load amps (FLA) 0.60 1.00 1.00 Note For more details concerning conditional connections, see http://extranet.daikineurope.com, select "E-Data Books". Finally, click on the document title of your choice.
  • Page 62 Specifications SiBE31-801_C Outdoor Air Processing Unit Model FXMQ125MFV1 FXMQ200MFV1 FXMQ250MFV1 kcal/h 12,000 19,300 24,100 ★ 1 Cooling Capacity Btu/h 47,800 76,400 95,500 14.0 22.4 28.0 kcal/h 7,700 12,000 15,000 ★ 1 Heating Capacity Btu/h 30,400 47,400 59,400 13.9 17.4 Casing Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate...

  • Page 63: Bs Units

    SiBE31-801_C Specifications 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 64: Part 3 Refrigerant Circuit

    SiBE31-801_C Part 3 Refrigerant Circuit 1. Refrigerant Circuit .................54 1.1 RTSQ8PY1.....................54 1.2 RTSQ10PY1, 12PY1................56 1.3 RTSQ14PY1, 16PY1................58 1.4 BS Unit Functional Parts ................60 1.5 Function Unit ..................61 1.6 Indoor Units ....................62 2. Functional Parts Layout ................64 2.1 RTSQ8P ....................64 2.2 RTSQ10P, 12P..................65 2.3 RTSQ14P, 16P..................66 2.4 BTSQ20P ....................67 3.

  • Page 65: Refrigerant Circuit

    SiBE31-801_C Refrigerant Circuit 1. Refrigerant Circuit RTSQ8PY1 No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52Hz and 280Hz by using Inverter compressor the inverter. Compressor operation steps : Refer to P.92~93. 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 66 Refrigerant Circuit SiBE31-801_C RTSQ8PY1 Refrigerant Circuit...

  • Page 67: Rtsq10Py1, 12Py1

    SiBE31-801_C Refrigerant Circuit RTSQ10PY1, 12PY1 No. in refrigerant Symbol Name Major Function system diagram Inverter compressor Inverter compressor is operated on frequencies between 52Hz and 280(266 for RTSQ12P)Hz by using the inverter, while Standard compressor is operated with commercial power supply only. The number of operating steps is as follows when Standard compressor 1 Inverter compressor is operated in combination with Standard compressor.
  • Page 68 Refrigerant Circuit SiBE31-801_C RTSQ10PY1, 12PY1 Refrigerant Circuit...

  • Page 69: Rtsq14Py1, 16Py1

    SiBE31-801_C Refrigerant Circuit RTSQ14PY1, 16PY1 No. in refrigerant Symbol Name Major Function system diagram Inverter compressor Inverter compressor is operated on frequencies between 52Hz and 266Hz 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 70 Refrigerant Circuit SiBE31-801_C RTSQ14PY1, 16PY1 Refrigerant Circuit...

  • Page 71: Bs Unit Functional Parts

    SiBE31-801_C Refrigerant Circuit 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 72: Function Unit

    Refrigerant Circuit SiBE31-801_C Function Unit BTSQ20P Symbol Name Function Inverter compressor is operated on frequencies between 52Hz and Inverter compressor 280Hz by using the inverter. Compressor operation steps: Refer to page 93. Electronic expansion valve (Liquid Used to conduct PI control so that the discharge pipe superheated injection) degree of the compressor will be kept constant.

  • Page 73: Indoor Units

    SiBE31-801_C 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 74 Refrigerant Circuit SiBE31-801_C FXMQ125MFV1~250MFV1 Gas pipe connection port Heat exchanger Filter Capillary tube Distributor Solenoid valve Liquid pipe connection port Check valve Filter Filter Electronic expansion valve 4D018650C Main Control Equipment Code Symbol Name Main function Electronic expansion valve Used to control the flow rate of refrigerant, and make the SH control while in cooling or the SC control while in heating.* Solenoid valve Used to bypass hot gas while in heating with thermostat OFF.

  • Page 75: Functional Parts Layout

    SiBE31-801_C Functional Parts Layout 2. Functional Parts Layout RTSQ8P Plan THERMISTOR SOLENOID VALVE (SUCTION) (HOT GAS) (R8T) (Y5S) REFRIGERANT REGULATOR SOLENOID VALVE (SVL) (Y4S) ELECTRONIC EXPANSION VALVE (SUBCOOLING) (Y3E) COIL FOR EXPANSION SOLENOID VALVE (SVE) PRESSURE SENSOR VALVE (CHARGE) SECTION M-M (Y6S) (LOW PRESS.) (Y2E)

  • Page 76: Rtsq10P, 12P

    Functional Parts Layout SiBE31-801_C RTSQ10P, 12P Plan THERMISTOR SOLENOID VALVE (SUCTION) (HOT GAS) (R8T) (Y5S) REFRIGERANT REGULATOR SOLENOID VALVE (SVL) (Y4S) ELECTRONIC EXPANSION VALVE ELECTRONIC EXPANSION (SUBCOOLING) VALVE (CHARGE) SECTION M-M (Y3E) LOW PRESSURE SENSOR (Y2E) SOLENOID VALVE (S2NPL) INSULATION TUBE (SVE) (Y6S) THERMISTOR...

  • Page 77: Rtsq14P, 16P

    SiBE31-801_C Functional Parts Layout RTSQ14P, 16P Plan THERMISTOR SOLENOID VALVE (SUCTION) (HOT GAS) (R8T) (Y5S) REFRIGERANT REGULATOR HIGH PRESSURE SWITCH (S1PH) SOLENOID VALVE (SVL) HIGH PRESSURE (Y4S) SWITCH COIL FOR EXPANSION VALVE (S2PH) (SUBCOOLING) HIGH PRESSURE (Y3E) SWITCH (S3PH) ELECTRONIC EXPANSION LOW PRESSURE SECTION M-M SOLENOID VALVE (SVE)

  • Page 78: Btsq20P

    Functional Parts Layout SiBE31-801_C BTSQ20P Plan GAS AND LIQUID SEPARATOR OIL SEPARATOR HIGH PRESSURE HIGH PRESSURE SENSOR SWITCH (S1NPH) (S1PH) Front View SWITCH BOX SOLENOID VALVE ELECTRONIC EXPANSION VALVE (TWO-STAGE PRESSURE REDUCTION) (LIQUID INJECTION) (Y2S) (Y1E) ELECTRONIC EXPANSION VALVE (TWO-STAGE SELECTION-2) SOLENOID VALVE (Y2E2) (HOT GAS)

  • Page 79: Refrigerant Flow For Each Operation Mode

    SiBE31-801_C Refrigerant Flow for Each Operation Mode 3. Refrigerant Flow for Each Operation Mode RTSYQ10P, 14P, 16P Cooling Operation Refrigerant Circuit...
  • Page 80 Refrigerant Flow for Each Operation Mode SiBE31-801_C Cooling Oil Return Operation Refrigerant Circuit...
  • Page 81 SiBE31-801_C Refrigerant Flow for Each Operation Mode Heating Operation (Normal) Refrigerant Circuit...
  • Page 82 Refrigerant Flow for Each Operation Mode SiBE31-801_C Heating Operation (at Low Outdoor Temperature) Refrigerant Circuit...
  • Page 83 SiBE31-801_C Refrigerant Flow for Each Operation Mode Heating Oil Return & Defrost Operation (Normal) Refrigerant Circuit...
  • Page 84 Refrigerant Flow for Each Operation Mode SiBE31-801_C Heating Oil Return & Defrost Operation (at Low Outdoor Temperature) Refrigerant Circuit...
  • Page 85 SiBE31-801_C Refrigerant Flow for Each Operation Mode RTSYQ20P Cooling Operation Refrigerant Circuit...
  • Page 86 Refrigerant Flow for Each Operation Mode SiBE31-801_C Cooling Oil Return Operation Refrigerant Circuit...
  • Page 87 SiBE31-801_C Refrigerant Flow for Each Operation Mode Heating Operation (Normal) Refrigerant Circuit...
  • Page 88 Refrigerant Flow for Each Operation Mode SiBE31-801_C Heating Operation (at Low Outdoor Temperature) Refrigerant Circuit...
  • Page 89 SiBE31-801_C Refrigerant Flow for Each Operation Mode Heating Oil Return & Defrost Operation (Normal) Refrigerant Circuit...
  • Page 90 Refrigerant Flow for Each Operation Mode SiBE31-801_C Heating Oil Return & Defrost Operation (at Low Outdoor Temperature) Refrigerant Circuit...

  • Page 91: Part 4 Function

    SiBE31-801_C Part 4 Function 1. Function General...................82 1.1 Operation Modes..................82 1.2 Symbol ....................83 2. Stopping Operation ................84 2.1 When System is in Stop Mode ...............84 2.2 Stop due to Malfunction................84 3. Standby ....................85 3.1 Restart Standby..................85 3.2 Crankcase Heater Control..............85 4.
  • Page 92 SiBE31-801_C 9.5 Heater Control (Optional PCB KRP1B...is required.) ......125 9.6 List of Swing Flap Operations ..............126 9.7 Control of Electronic Expansion Valve ..........127 Function...

  • Page 93: Function General

    SiBE31-801_C Function General 1. Function General Operation Modes 2. Stopping Operation 2.1 When System is in Stop Mode 2.2 Stop due to Malfunction 3. Standby 3.1 Restart Standby 3.2 Crankcase Heater Control Thermostat ON 4. Rotation Control 4.1 Rotation of Outdoor Units 4.2 Operating Priority and Rotation of Compressors 8.

  • Page 94: Symbol

    Function General SiBE31-801_C Symbol Symbol Electric symbol Description or function 20SA Four way valve (Heat exchanger switch) 20SB Four way valve (High/low pressure gas pipe switch) Discharge pipe superheated degree (Discharge pipe temp.-high pressure equivalent saturation – temp.) DSHi – Discharge pipe superheat of inverter compressor DSHs –...

  • Page 95: Stopping Operation

    SiBE31-801_C Stopping Operation 2. Stopping Operation When System is in Stop Mode Both master units and slave units all stop according to the following contents. Operation Elect. Actuator Symbol symbol RTSQ8P RTSQ10•12P RTSQ14•16P Compressor 1 — Compressor 2 — — Compressor 3 —...

  • Page 96: Standby

    Standby SiBE31-801_C 3. Standby Restart Standby This function is used to forcedly turn OFF the thermostat for a period of 2 minutes after a compressor stops running, in order to prevent the frequent ON-OFF operations of the compressor and equalize pressure in the refrigerant circuit. Furthermore, the outdoor fan continues residual operation for a while to facilitate pressure equalization and prevent the stay of refrigerant in evaporator.

  • Page 97: Rotation Control

    SiBE31-801_C Rotation Control 4. Rotation Control Rotation of Outdoor Units In order to make operating time equal for each compressor of multi connection outdoor units, outdoor units are used in rotation. [Rotation of outdoor units] [System with two outdoor units] Outdoor Unit 1 Outdoor Unit 2 Previous time...

  • Page 98: Startup Control

    Startup Control SiBE31-801_C 5. 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 liquid refrigerant return or else after the startup, the following control is made and the position of the four way valve is also determined.

  • Page 99: Startup Control In Heating Operation

    SiBE31-801_C Startup Control Startup Control in Heating Operation Pressure Startup control Elect. equalization Actuator Symbol symbol control STEP1 STEP2 before startup Compressor 1 52Hz+OFF+OFF+2STEP / 20 sec. Compressor 2 — 0 Hz 52 Hz+OFF+OFF (Until it reaches Compressor 3 Pc-Pe>0.39 MPa) Outdoor unit fan 1 —...

  • Page 100: Startup Control Of Function Unit (Only For Heating Operation At Low Outdoor Air Temperature)

    Startup Control SiBE31-801_C Startup Control of Function Unit (only for heating operation at low outdoor air temperature) Pressure Startup control Electric equalization Part name symbol control before Step 1 Step 2 Step 3 Step 4 startup Compressor 52 Hz 52 Hz 112 Hz 180 Hz Electronic expansion...

  • Page 101: Normal Operation

    SiBE31-801_C Normal Operation 6. Normal Operation List of Functions in Normal Operation 6.1.1 Outdoor Unit Electric Part Name Symbol Normal Cooling Normal Heating Symbol Compressor 1 PI control, High pressure protection, PI control, High pressure protection,  Compressor 2 Low pressure protection, Low pressure protection, Td protection, INV protection, Td protection, INV protection,...

  • Page 102: Compressor Control

    Normal Operation SiBE31-801_C Compressor Control 6.2.1 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 103 SiBE31-801_C Normal Operation 6.2.2 Compressor Step Control Compressor operations vary with the following steps according to information in "6.2.1 Compressor PI Control". RTSYQ14 · 16P RTSYQ10P STEP STEP STEP STD1 STD2 STD1 STD2 52 Hz 188 Hz 52 Hz 56 Hz 202 Hz 56 Hz 62 Hz...
  • Page 104 Normal Operation SiBE31-801_C [Function unit] RTSYQ20P BTSQ20P (To increase Step No.) (To decrease Step No.) STEP Unit 1 Unit 2 STEP Unit 1 Unit 2 STEP 52 Hz 52 Hz 52 Hz 0 Hz 52Hz 56 Hz 56 Hz 56 Hz 0 Hz 56Hz 62 Hz...

  • Page 105: Electronic Expansion Valve Pi Control

    SiBE31-801_C Normal Operation Electronic Expansion Valve PI Control 6.3.1 Electronic Expansion Valve of Outdoor Unit Main electronic expansion valve (Y1E) 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) so that the evaporator outlet superheated degree (SH) will become constant.

  • Page 106: Outdoor Unit Fan Control

    Normal Operation SiBE31-801_C Outdoor Unit Fan Control 6.4.1 Step Control of Outdoor Unit Fans Used to control the revolutions of outdoor unit fans in the steps listed in table below, according to condition changes. Fan revolutions (rpm) STEP No. RTSQ14P RTSQ16P RTSQ8P RTSQ10P...

  • Page 107: Control For Heating Operation At Low Outdoor Air Temperature

    SiBE31-801_C Normal Operation Control for Heating Operation at Low Outdoor Air Temperature To conduct optimal heating operation, the two operation modes, "Two-stage compression" and "Single-stage compression", are available according to outdoor temperatures and loads. System startup Determination of operation mode *Determine at startup whether to conduct single-stage compression or two-stage compression.

  • Page 108: Refrigerant Flow Rate Control

    Normal Operation SiBE31-801_C Refrigerant Flow Rate Control Recovery of Refrigerant When the indoor unit operates at low load, the solenoid valves (Y1S and Y4S) will be energized to recover excess refrigerant to the refrigerant regulator. Right Electronic Subcooling Filter expansion Electronic valve heat...

  • Page 109: Protection Control

    SiBE31-801_C Protection Control 7. 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 110 Protection Control SiBE31-801_C [In heating operation] < Outdoor unit > Normal operation Pc > 3.04 Pc < 2.55MPa Pc < 2.89MPa Make opening Pc > 3.30MPa degree adjustment Compressor system (see *2): of electronic 1 step down per 10 sec. expansion valve (Y1E) (see *3) Pc >...

  • Page 111: Low Pressure Protection Control

    SiBE31-801_C Protection Control Low Pressure Protection Control This function is used to conduct low-pressure protection control on outdoor units, in order to protect compressors from transient drops in low pressure. [In cooling operation] ★ For systems with multi outdoor units, the control shown below is conducted on the whole system.
  • Page 112 Protection Control SiBE31-801_C [In heating operation] ★ For systems with multi outdoor units, the control shown below is conducted by outdoor unit. Normal operation • Pe > 0.23MPa Pe < 0.17 & • Compressor step = Max. step & • Pe > 0.20MPa Pe: Value detected by the low •...

  • Page 113: Discharge Pipe Protection Control

    SiBE31-801_C 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. This control is performed by each compressor. [INV compressor] ★ The following control is performed for each compressor of outdoor (and function unit).

  • Page 114: Inverter Protection Control

    Protection Control SiBE31-801_C 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 115: Std Compressor Overload Protection

    SiBE31-801_C Protection Control 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 Demand to operate. CT detection current value>14.95A STD compressor OFF for 30 min.

  • Page 116: Special Control

    Special Control SiBE31-801_C 8. Special Control Pump down Residual 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 117 SiBE31-801_C Special Control 8.1.2 Pump down Residual Operation in Heating Operation (Outdoor Unit) Elect. Slave unit operation Actuator Master unit operation symbol (RTSYQ20PY1 only) Compressor 1 124 Hz Compressor 2 Compressor 3 Outdoor unit fan 1 Fan STEP No. 8 Fan STEP No.

  • Page 118: Oil Return Operation

    Special Control SiBE31-801_C 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. 8.2.1 Cooling Oil Return Operation [Start conditions] Referring to the following conditions, start cooling oil return operation.
  • Page 119 SiBE31-801_C Special Control <Indoor Units> Part Name Elect. symbol Indoor unit actuator operation during cooling 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 Unit not in operation Normal opening degree for forced thermostat ON...
  • Page 120 Special Control SiBE31-801_C 8.2.2 Heating Oil Return Operation [Start conditions] Referring to the following conditions, start heating oil return operation. • Integral oil rise rate (*1) 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) *1 The integral oil rise rate: The higher the compressor operating step No., the cumulative refrigerant oil consumption increases.
  • Page 121 SiBE31-801_C Special Control <Function unit> In preparation Elect. In oil return After oil return Actuator Symbol operation operation Step 1 Step 2 Compressor 0 Hz 0 Hz 210 Hz→52 Hz 0 Hz Electronic expansion valve 0 pls 0 pls 0 pls 0 pls (Liquid injection) Electronic...

  • Page 122: Defrost Operation

    Special Control SiBE31-801_C Defrost Operation Execute the Defrost operation to recover the heating capacity by melting frost attached on the outdoor heat exchanger during heating operation. [Start conditions] Referring to the following conditions, start defrost operation. • When there is a decrease in the coefficient of heat transfer (*1) of outdoor unit heat exchanger •...
  • Page 123 SiBE31-801_C Special Control <Function unit> In preparation Elect. In defrosting After defrosting Actuator Symbol operation operation Step 1 Step 2 Compressor 0 Hz 0 Hz 210 Hz→52 Hz 0 Hz Electronic expansion valve 0 pls 0 pls 0 pls 0 pls (Liquid injection) Electronic expansion valve...

  • Page 124: Emergency Operation

    Special Control SiBE31-801_C 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 125: Outline Of Control (Indoor Unit)

    SiBE31-801_C Outline of Control (Indoor Unit) 9. 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 126 Outline of Control (Indoor Unit) SiBE31-801_C Heating Operation Micro-computer dry operation (option) Micro-computer 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 127: Thermostat Control

    SiBE31-801_C Outline of Control (Indoor Unit) Thermostat Control 9.2.1 Thermostat Control for VRV Multi System The thermostat control for VRV multi system is available in the three patterns shown below. 1. Using suction air thermistor (body thermostat) and remote control thermistor in combination (Factory setting) ·...
  • Page 128 Outline of Control (Indoor Unit) SiBE31-801_C 9.2.2 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”...
  • Page 129 SiBE31-801_C 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 130: Thermostat Control While In Normal Operation

    Outline of Control (Indoor Unit) SiBE31-801_C 9.2.3 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 131 SiBE31-801_C Outline of Control (Indoor Unit) 9.2.5 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.148 and later)"...

  • Page 132: Drain Pump Control

    Outline of Control (Indoor Unit) SiBE31-801_C Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 9.3.1 When the Float Switch is Tripped while the Cooling Thermostat is Remote controller "A3"...
  • Page 133 SiBE31-801_C Outline of Control (Indoor Unit) 9.3.3 When the Float Switch is Tripped and “AF” is Displayed on the Remote Controller: Enters malfunction treatment if the float switch is not reset within 5 minutes. Remote Remote controller "A3" "AF" display (running) controller display flashing malfunction stop Float switch...
  • Page 134 Outline of Control (Indoor Unit) SiBE31-801_C If a humidifier is connected and the "Drain pump / Humidifier interlock" parameter is set to "Enabled" while in filed setting mode, the following control will be conducted. 1. Float switch activation (1), etc. Thermostat (running) Humidifier Float switch...

  • Page 135: Freeze Prevention

    SiBE31-801_C 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 136: Heater Control (Optional Pcb Krp1B

    Outline of Control (Indoor Unit) SiBE31-801_C 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 137: List Of Swing Flap Operations

    SiBE31-801_C 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 138: Control Of Electronic Expansion Valve

    Outline of Control (Indoor Unit) SiBE31-801_C 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 139: Part 5 Test Operation

    SiBE31-801_C Part 5 Test Operation 1. Test Operation ..................129 1.1 Installation Process ................129 1.2 Procedure and Outline .................130 1.3 Additional Refrigerant Charge Procedure ..........134 1.4 Check Operation ..................144 1.5 Check in Normal Operation ..............146 2. Outdoor Unit PCB Layout..............147 3. Field Setting ..................148 3.1 Field Setting from Remote Controller ...........148 3.2 Field Setting from Outdoor Unit............166 Test Operation...

  • Page 140: Test Operation

    Test Operation SiBE31-801_C 1. Test Operation Installation Process Below Figure shows the installation process. Install in the order of the steps shown. Selection of Location Inspecting and Handling the Unit Placing the Unit Field Wiring Refrigerant Piping Air Tight Test and Vacuum Drying Pipe Insulation Checking of Device and Installation Conditions Additional Refrigerant Charge and Check Operation...

  • Page 141: Procedure And Outline

    SiBE31-801_C Test Operation 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 142 Test Operation SiBE31-801_C 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 143 SiBE31-801_C Test Operation 1.2.2 Turn Power On Be sure to turn the power on 6 hours before starting operation to protect Turn outdoor unit, function unit compressors. (to power on crankcase heater) and indoor 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 144 Test Operation SiBE31-801_C Inside of the switch box Switch box cover Mode setting switch (BS1~BS5) <Main PCB> Set mode display (LED) (H1P~H8P) X20A X23A X22A X37A X28A #### #### 1 2 3 4 1 2 3 4 X34A SERV. 2 3 4 2 3 4 MONITOR X100A...

  • Page 145: Additional Refrigerant Charge Procedure

    SiBE31-801_C Test Operation Additional Refrigerant Charge Procedure Charge the additional refrigerant by following procedure before test operation. (Refer to p.131) Calculation of refrigerant amount Provide the calculated additional refrigerant amount as “G” Connection of devices for (Refer to 1.3.1) refrigerant charge If automatic charging of refrigerant is not necessary Additional charging of refrigerant...
  • Page 146 Test Operation SiBE31-801_C Note: Note 1. When the refrigerant charging procedure is done or when pausing, close the valve of the refrigerant tank immediately. - The refrigerant charge port has a electronic expansion valve and will be closed at the end of the refrigerant charging.
  • Page 147 SiBE31-801_C Test Operation Note: When the leak detection function is not required, complete charging when using the previous described method (unit is not operating) can be done. If it is not possible to charge the entire quantity through the service port of the liquid pipe stop valve with the unit not operating, refer to "1.3.5 Remaining Refrigerant Charging Method"...
  • Page 148 Test Operation SiBE31-801_C <Charging in heating mode > 8. Start up Wait while the unit is preparing for charging in heating mode. H1P H2P H3P H4P H5P H6P H7P h l h h h h k Pressure control (for the first minute) l l h h h k h Start up control (for the next 2 minutes)
  • Page 149 SiBE31-801_C Test Operation 12.In case leak detection function is required Press the BS4 TEST button once for post-processing with regard to the leak detection function and press the BS1 MODE button to confirm that charging is completed. 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.
  • Page 150 Test Operation SiBE31-801_C 11.Complete H1P H2P H3P H4P H5P H6P H7P l l l k k k k 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 code is displayed on the remote controller.
  • Page 151 SiBE31-801_C Test Operation 1. 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 152 Test Operation SiBE31-801_C 3. Remote controller malfunction code display Remote controller heating mode malfunction codes Error code Close valve A immediately and press the TEST OPERATION button once. recharge The operation will restart from the charging mode judgement onwards. operation Close valve A immediately.
  • Page 153 SiBE31-801_C Test Operation Possible LED combinations in function of weight of additional refrigerant charge (= x) to input; H1P H2P H3P H4P H5P H6P H7P k h h h h h h x = 0 k h h h h h k 0 <...
  • Page 154 Test Operation SiBE31-801_C 1.3.5 Remaining Refrigerant Charging Method When the leak detection function is not required and the entire refrigerant quantity can not be charged through the liquid pipe stop valve service port with the unit not operating (refer to Pre- charging”...

  • Page 155: Check Operation

    SiBE31-801_C Test Operation Check Operation • Make sure to carry out the check operation after the first installation. Otherwise, the malfunction code "U3" will be displayed on the remote controller and normal operation cannot be carried out. When the check operation is finished normally, normal operation can be carried out after approx.
  • Page 156 Test Operation SiBE31-801_C The test operation is automatically carried out in cooling mode, the H2P LED will light up and the messages "Test operation" and "Under centralized control" will display on the remote controller. It may take 10 minutes to bring the state of the refrigerant uniform before the compressor starts.

  • Page 157: Check In Normal Operation

    SiBE31-801_C Test Operation Check in Normal Operation After all installation works are completed, operate the unit normally and check the following: Make sure the indoor units and outdoor unit are operating normally. Operate each indoor unit separately and make sure the corresponding outdoor unit is also operating properly.

  • Page 158: Outdoor Unit Pcb Layout

    Outdoor Unit PCB Layout SiBE31-801_C 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) Micro-computer normal monitor (4) Dip switch...

  • Page 159: Field Setting

    SiBE31-801_C Field Setting 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 160 Field Setting SiBE31-801_C 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 161 SiBE31-801_C Field Setting 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 1. When in the normal mode, push the “ ” button for 4 seconds or more, and operation then enters the “field set mode.”...
  • Page 162 Field Setting SiBE31-801_C 3.1.3 Simplified Remote Controller BRC2A51 BRC2C51 MODE NO. FIRST CODE NO. UNIT NO. SECOND CODE NO. (7) (4) (5) (6) 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 163 SiBE31-801_C Field Setting 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 164 Field Setting SiBE31-801_C Notes : 1. Settings are made simultaneously for the entire group, however, if you select the mode No. inside parentheses, you can also set by each individual unit. Setting changes however cannot be checked except in the individual mode for those in parentheses. 2.
  • Page 165 SiBE31-801_C Field Setting 3.1.5 Applicable Range of Field Setting Ceiling mounted cassette Slim Concealed Concealed Concealed Concealed Ceiling Wall Floor Concealed 4-way blow Outdoor air concealed ceiling unit ceiling unit ceiling unit ceiling unit suspended mounted standing floor ceiling processing Roundflow 4-way 2-way Corner...

  • Page 166: Detailed Explanation Of Setting Modes

    Field Setting SiBE31-801_C 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 167 SiBE31-801_C Field Setting (4) "Filter Cleaning" Displayed or Not Displayed Whether or not to display "Filter Cleaning" after operation of certain duration can be selected. Mode No. First Code No. Second Code No. "Filter Cleaning" display Display 10 (20) No display (5) Airflow Adjustment (AUTO) External Static Pressure Settings Make settings in either method (a) or method (b) as explained below.
  • Page 168 Field Setting SiBE31-801_C (8) Thermostat Switching Differential value during thermostat ON/OFF control can be changed. (For details, refer to "9.2.3 Thermostat Control while in Normal Operation" on P.119.) Mode No. First Code No. Second Code No. Differential value 1ºC 12(22) 0.5ºC (9) Airflow Setting When Heating Thermostat is OFF This setting is used to set airflow when heating thermostat is OFF.
  • Page 169 SiBE31-801_C Field Setting (13) Setting of Normal Airflow Make the following setting according to the ceiling height. The second code No. is set to “01” at the factory. In the Case of FXAQ, FXHQ Second Code Mode No. First Code No. Setting Wall mounted type: Standard 13(23)
  • Page 170 Field Setting SiBE31-801_C (16) Setting of Airflow Direction Adjustment Range Make the following airflow direction setting according to the respective purpose. Setting Table Mode No. First Code No. Second Code No. Setting Upward (Draft prevention) 13 (23) Standard Downward (Ceiling soiling prevention) ∗...
  • Page 171 SiBE31-801_C Field Setting (19) Humidification When Heating Thermostat is OFF Setting to "Humidification Setting" turns ON the humidifier if suction air temperature is 20ºC or above and turns OFF the humidifier if suction air temperature is 18ºC or below when the heating thermostat is OFF.
  • Page 172 Field Setting SiBE31-801_C 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 173 SiBE31-801_C 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 174 Field Setting SiBE31-801_C BRC2A Type Group No. setting by simplified remote controller for centralized control. 1. Dismount the upper casing from the remote controller. BRC2C Type 2. Press the [BS6] button (2) (field setting) to set the system to field setting mode. 3.
  • Page 175 SiBE31-801_C Field Setting Group No. Setting Example Centralized Remote Controller Indoor/Outdoor Outdoor/Outdoor Indoor/Outdoor Outdoor/Outdoor F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 Group Control by Remote RC Sub 1-00...
  • Page 176 Field Setting SiBE31-801_C 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 177: Field Setting From Outdoor Unit

    SiBE31-801_C Field Setting 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 178 Field Setting SiBE31-801_C 3.2.2 Service Setting Setting item Content and objective of setting Overview of setting procedure Indoor unit fan Used to operate the indoor unit in the Set No. 5 of "Setting mode 2" to indoor unit forced H operation stopped state in forced H operation mode.
  • Page 179 SiBE31-801_C Field Setting 3.2.3 Setting by Dip Switches <Outdoor Units> Using dip switches on the PCB enables field setting shown below. However, make no changes of factory settings except for DS1-1. Dipswitch Setting item Description Setting DS1-1 Not used Do not change the factory settings. ~DS1-4 OFF (Factory setting) DS2-1...
  • Page 180 Field Setting SiBE31-801_C “Detail of DS1-1~4, DS2-1~4 setting” (for Overseas general) Unit Setting method ( represents the position of switches) HEAT PUMP(8HP) Set DS2-1 and DS2-3 to ON. RTSQ8PY1 1 2 3 4 1 2 3 4 HEAT PUMP(10HP) Set DS2-1, DS2-2 and DS2-3 RTSQ10PY1 to ON.
  • Page 181 SiBE31-801_C Field Setting 3.2.4 Setting by Pushbutton Switches The following settings are made by pushbutton 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 182 Field Setting SiBE31-801_C a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············ In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory setting).
  • Page 183 SiBE31-801_C 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 184 Field Setting SiBE31-801_C Setting item Description Emergency operation 1 (Setting for the master unit <RTSYQ20P> operation Prohibits operation of master unit. prohibition in multi- outdoor-unit system) Emergency operation 2 (Setting for the slave unit 1 Prohibits operation of slave unit. operation prohibition in multi- outdoor-unit...
  • Page 185 SiBE31-801_C Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory setting khhhhhh Address khhhhhk Binary number Digital pressure gauge kit display (4 digits) khhkkkk khhhhhh ∗ Address khhhhhk Binary number Cool/Heat Unified address (6 digits)
  • Page 186 Field Setting SiBE31-801_C Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory setting khhhhhh ∗ khhhhhk Level 1 (outdoor fan with 6 step or lower) 22 Night-time low noise setting khhhhkh Level 2 (outdoor fan with 5 step or lower) khhhhkk Level 3 (outdoor fan with 4 step or lower)
  • Page 187 SiBE31-801_C Field Setting c. Monitor mode LED display Setting item Data display H2P H3P H5P H6P 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 k h “Setting mode 1”.
  • Page 188 Field Setting SiBE31-801_C 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 189 SiBE31-801_C Field Setting 3.2.5 Cool / Heat Mode Switching There are the following 4 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by indoor unit remote controller. Set cool/heat separately for each outdoor unit system by cool/heat selector. Set cool/heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote controller.
  • Page 190 Field Setting SiBE31-801_C (2) Set Cool / Heat Separately for Each Outdoor Unit System by Cool / Heat Selector It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PCB DS1-1 to OUT (factory setting). Set cool/heat switching to IND (individual) for “Setting mode 1”...
  • Page 191 SiBE31-801_C Field Setting (3) Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Indoor Unit Remote Controller Install the external control adaptor for outdoor unit on either the outdoor-outdoor, indoor- outdoor transmission line.
  • Page 192 Field Setting SiBE31-801_C (4) Set Cool / Heat for More Than One Outdoor Unit System Simultaneously in Accordance with Unified Master Outdoor Unit by Cool / Heat Selector Install the external control adaptor for outdoor unit on either the outdoor-outdoor, indoor- outdoor transmission line.
  • Page 193 SiBE31-801_C Field Setting Supplementation on (3) and (4). When switching cool/heat for each adaptor PCB with the use of more than one adaptor PCB, set the address of the external control adaptor for outdoor unit PCB DS1 and DS2 so that it matches the unified cool/heat address of outdoor unit main PCB.
  • Page 194 Field Setting SiBE31-801_C 3.2.6 Setting of Low Noise Operation and Demand Operation (1) 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 use low noise operating. Setting Content Level 1...
  • Page 195 SiBE31-801_C 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 196 Field Setting SiBE31-801_C (2) 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...
  • Page 197 SiBE31-801_C 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 198 Field Setting SiBE31-801_C (3) 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 199 SiBE31-801_C Field Setting 3.2.7 Air Tight Testing Procedure Carry out airtight testing after the completion of internal service for the system on site. For this purpose, fully open the expansion valves of indoor and outdoor units and turn ON some of solenoid valves.
  • Page 200 Field Setting SiBE31-801_C 3.2.10 Emergency Operation If any of the compressors causes a failure, the relevant compressor or the relevant outdoor unit will be prohibited from running, and emergency operation will be conducted only with an operable compressor or outdoor unit. The emergency operation can be conducted by resetting the remote controller or making outdoor unit PCB setting.
  • Page 201 SiBE31-801_C Field Setting <Disable-operation setting of the compressor> (Applied model: RTSYQ10~16P) k Disabling the inverter compressor from operating Set No. 42 of setting mode 2 to "Disable-inverter compressor operation." LED display ( : ON : OFF : Blink) (Step) H1P-----------H7P (1) Press the MODE button (BS1) for 5 k h h h h h h seconds or more.
  • Page 202 Field Setting SiBE31-801_C <Disable-operation setting of the outdoor unit> (Applied model: RTSYQ20P) Make disable-operation setting by each outdoor unit. Make the following setting with the master unit. (Setting with the slave unit will be invalidated.) * Discriminate between the master unit and the slave unit according to LED displays shown below.
  • Page 203 SiBE31-801_C Field Setting [Cancel of Emergency Operation] To cancel the emergency operation, conduct the following setting. (Return to Factory setting.) <RTSYQ10 to 16PY1> k Cancel disabling the inverter compressor from operating: Set No. 42 of setting mode 2 "Disable-inverter compressor operation" to "OFF". LED display ( : ON : OFF...
  • Page 204 Field Setting SiBE31-801_C <RTSYQ20PY1> Cancel the disable-operation setting by each outdoor unit. Make the following setting on the outdoor unit 1. (If this setting is made on an outdoor unit other than the outdoor unit 2, the setting will become invalid.) *It is possible to tell the outdoor units 1, 2, and 3 according the LED displays shown below.

  • Page 205: Part 6 Troubleshooting

    SiBE31-801_C Part 6 Troubleshooting 1. Check Items for Service ..............197 1.1 For Troubleshooting ................197 1.2 Precautions for Service ................197 2. Symptom-based Troubleshooting ............199 3. Troubleshooting by Remote Controller ..........202 3.1 The INSPECTION / TEST Button............202 3.2 Self-diagnosis by Wired Remote Controller .........203 3.3 Self-diagnosis by Wireless Remote Controller ........204 3.4 Remote Controller Service Mode ............207 3.5 Inspection Mode ...................210...
  • Page 206 SiBE31-801_C 4.25 “J2” Outdoor Unit: Current Sensor Malfunction ........262 4.26 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31T, R32T, R33T)................263 4.27 “J4” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T)..............264 4.28 “J5” Outdoor Unit: Malfunction of Thermistor (R8T) for Suction Pipe ..................265 4.29 “J6”...
  • Page 207 SiBE31-801_C 5.2 “M8” Malfunction of Transmission between Optional Controllers for Centralized Control.........324 5.3 “MA” Improper Combination of Optional Controllers for Centralized Control................325 5.4 “MC” Address Duplication, Improper Setting .........327 6. Troubleshooting (OP: Unified ON/OFF Controller) ......328 6.1 Operation Lamp Blinks .................328 6.2 Display “Under Centralized Control”...

  • Page 208: Check Items For Service

    Check Items for Service SiBE31-801_C 1. Check Items for Service For Troubleshooting 1.1.1 Initial Check and Fault Diagnosis 1. Thoroughly check for requests/complaints of users. 2. Check for statuses in which faults occur through hearings from users. 3. Check whether or not any "malfunction code" is displayed on the remote controller. (Or check whether or not any malfunction is caused in the monitor mode of outdoor unit.) ↓...
  • Page 209 SiBE31-801_C Check Items for Service 5. After the completion of service, reinstall the junction connectors to the outdoor unit fans. The malfunction code "E7" is displayed on the remote controller to disable normal operation. To connect the connectors, refer to information in Section " 2 Wiring Diagrams". Multiple meter 1.2.4 Precautions for Field Settings...

  • Page 210: Symptom-Based Troubleshooting

    Symptom-based Troubleshooting SiBE31-801_C 2. 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 211 SiBE31-801_C 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 The remote controller displays While in heat storage operation,...
  • Page 212 Symptom-based Troubleshooting SiBE31-801_C 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 213: Troubleshooting By Remote Controller

    SiBE31-801_C Troubleshooting by Remote Controller 3. 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 214: Self-Diagnosis By Wired Remote Controller

    Troubleshooting by Remote Controller SiBE31-801_C 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 215: Self-Diagnosis By Wireless Remote Controller

    SiBE31-801_C 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 216 Troubleshooting by Remote Controller SiBE31-801_C The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. “Advance” button “Backward” button Troubleshooting...
  • Page 217 SiBE31-801_C 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 218: Remote Controller Service Mode

    Troubleshooting by Remote Controller SiBE31-801_C 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 219 SiBE31-801_C Troubleshooting by Remote Controller 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 220 Troubleshooting by Remote Controller SiBE31-801_C 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 221: Inspection Mode

    SiBE31-801_C Troubleshooting by Remote Controller 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 222: Test Run Mode

    Troubleshooting by Remote Controller SiBE31-801_C 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 223 SiBE31-801_C 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 224: List Of Malfunction Code

    Troubleshooting by Remote Controller SiBE31-801_C List of Malfunction Code k: ON h: OFF l: Blink Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Indoor Unit Error of external protection device PCB defect Malfunction of drain level control system Fan motor (M1F) lock, overload Malfunction of swing flap motor Malfunction of moving part of electronic expansion...
  • Page 225 SiBE31-801_C Troubleshooting by Remote Controller k: ON h: OFF l: Blink Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Outdoor Unit Malfunction of transmission between inverter and control PCB Inverter over-ripple protection [In automatically refrigerant charge] Operation stop in charging Malfunction of inverter radiation fin temperature rise sensor...
  • Page 226 Troubleshooting by Remote Controller SiBE31-801_C k: ON h: OFF l: Blink Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Heat Error of external protection device (Field setting [18- Reclaim 8] setting position is 02 “Overall Alarm”) Ventilation Error of external protection device (Field setting [18- 8] setting position is 03 “Overall malfunction”)
  • Page 227 SiBE31-801_C Troubleshooting by Remote Controller 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 228 Troubleshooting by Remote Controller SiBE31-801_C 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 ∗...
  • Page 229 SiBE31-801_C Troubleshooting by Remote Controller <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 230 Troubleshooting by Remote Controller SiBE31-801_C 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 ∗...

  • Page 231: Troubleshooting By Indication On The Remote Controller

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4. 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 232: A1" Indoor Unit: Pcb Defect

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C “ ” 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 233: A3" Indoor Unit: Malfunction Of Drain Level Control System (S1L)

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: Malfunction of Drain Level Control System (S1L) Remote Controller Display Applicable FXCQ, FXZQ, FXFQ, FXSQ, FXKQ, FXDQ, FXMQ, FXUQ, FXHQ (Option), FXMQ200,250M (Option), FXAQ (Option) Models Method of By float switch OFF detection Malfunction Detection...
  • Page 234 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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. The float switch is A short circuit connected to X8A or connector is connected...

  • Page 235: A6" Indoor Unit: Fan Motor (M1F) Lock, Overload

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller “ ” 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 236 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 237: A6" Indoor Unit: Malfunction Of Indoor Unit Fan Motor

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller “ ” 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 238 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 Malfunction...
  • Page 239 SiBE31-801_C 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 and wait for 10 minutes. There is a foreign Remove the foreign matter.
  • Page 240 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 241: A7" Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller “ ” 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 242 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 243: A9" Electronic Expansion Valve Malfunction / Dust Clogging

    SiBE31-801_C 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 244 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 245: A9" Indoor Unit: Malfunction Of Electronic Expansion Valve Coil

    SiBE31-801_C 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 246 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 247: Af" Indoor Unit: Drain Level Above Limit

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller “ ” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable FXCQ, FXZQ, FXFQ, FXSQ, FXKQ, FXMQ, FXDQ, FXMQ-MF, FXUQ Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation.

  • Page 248: Aj" Indoor Unit: Malfunction Of Capacity Determination Device

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C “ ” 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 249: C4" Indoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller “ ” 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 250: C5" Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.10 “ ” 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 251: C9" Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.11 “ ” 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 252: Ca" Indoor Unit: Malfunction Of Thermistor (R4T) For Discharge Air

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.12 “ ” Indoor Unit: Malfunction of Thermistor (R4T) for Discharge 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 253: Cj" Indoor Unit: Malfunction Of Room Temperature

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.13 “ ” 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 254: E1" Outdoor Unit: Pcb Defect

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.14 “ ” Outdoor Unit: PCB Defect Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Abnormality is detected under the communication conditions in the hardware section between the indoor unit and outdoor unit or function unit.

  • Page 255: E3" Outdoor Unit: Actuation Of High Pressure Switch

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.15 “ ” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction...
  • Page 256 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. While in monitor mode, check the outdoor unit and the function unit concerned. Check for the points shown below.

  • Page 257: E4" Outdoor Unit: Actuation Of Low Pressure Sensor

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.16 “ ” Outdoor Unit: Actuation of Low Pressure Sensor Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) Models Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction...
  • Page 258 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 259: E5" Outdoor Unit: Inverter Compressor Motor Lock

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.17 “ ” Outdoor Unit: Inverter Compressor Motor Lock Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) 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 260 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. While in monitor mode, check the outdoor unit and the function unit concerned. Check if the Local factor stop valve is...

  • Page 261: E6" Outdoor Unit: Std Compressor Motor Overcurrent/Lock

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.18 “ ” Outdoor Unit: STD Compressor Motor Overcurrent/ Lock Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) 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 262: E7" Outdoor Unit: Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.19 “ ” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) 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 263 SiBE31-801_C 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 14HP ~16HP class models have 2 fans. Check electric motor (electric motor 1 or 2) corresponding to malfunction code “...
  • Page 264 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting No continuity of fuse (FIU) on Replace the fan inverter the fan inverter PCB. PCB. Unable to rotate the fan manually with ease when Replace the corresponding removing the connector of fan motor.

  • Page 265: E9" Outdoor Unit: Malfunction Of Electronic Expansion Valve Coil (Y1E~Y5E)

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.20 “ ” Outdoor Unit: Malfunction of Electronic Expansion Valve Coil (Y1E~Y5E) Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Check disconnection of connector Check continuity of electronic expansion valve Malfunction Detection Malfunction...
  • Page 266 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 267: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.21 “ ” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor.
  • Page 268 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. While in monitor mode, check the outdoor unit and the function unit concerned. Connect the service checker.

  • Page 269: F6" Outdoor Unit: Refrigerant Overcharged

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.22 “ ” Outdoor Unit: Refrigerant Overcharged Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) 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 270: H7" Outdoor Unit: Abnormal Outdoor Fan Motor Signal

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.23 “ ” Outdoor Unit: Abnormal Outdoor Fan Motor Signal Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) 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 271 SiBE31-801_C 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 Page 216~217 for how to check) When Confirmation of malfunction 3 shows as follows: →...

  • Page 272: H9" Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.24 “ ” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction...

  • Page 273: J2" Outdoor Unit: Current Sensor Malfunction

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.25 “ ” Outdoor Unit: Current Sensor Malfunction Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) 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 274: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R31T, R32T, R33T)

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.26 “ ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R31T, R32T, R33T) Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor.

  • Page 275: J4" Outdoor Unit: Malfunction Of Temperature Sensor For Heat Exchanger Gas (R2T)

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.27 “ ” Outdoor Unit: Malfunction of Temperature Sensor for Heat Exchanger Gas (R2T) Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Detect malfunction based on the temperature detected by each thermistor. Malfunction Detection Malfunction...

  • Page 276: J5" Outdoor Unit: Malfunction Of Thermistor (R8T) For Suction Pipe

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.28 “ ” Outdoor Unit: Malfunction of Thermistor (R8T) for Suction Pipe Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor.

  • Page 277: J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.29 “ ” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction...

  • Page 278: J7" Outdoor Unit: Malfunction Of Liquid Pipe Thermistor 1 (R6T Or R9T)

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.30 “ ” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 1 (R6T or R9T) Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Detection Malfunction...

  • Page 279: J8" Outdoor Unit: Malfunction Of Liquid Pipe Thermistor 2 (R7T)

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.31 “ ” Outdoor Unit: Malfunction of Liquid Pipe Thermistor 2 (R7T) Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected according to the temperature detected by liquid pipe thermistor. Malfunction Detection Malfunction...

  • Page 280: J9" Outdoor Unit: Malfunction Of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T)

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.32 “ ” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R5T) Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor.

  • Page 281: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.33 “ ” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction...
  • Page 282 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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.216~217) 1.

  • Page 283: Jc" Outdoor Unit: Malfunction Of Low Pressure Sensor

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.34 “ ” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) Models Method of Malfunction is detected from the pressure detected by the low pressure sensor. Malfunction Detection Malfunction...
  • Page 284 Troubleshooting by Indication on the Remote Controller SiBE31-801_C ∗ 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 P.410. Troubleshooting...

  • Page 285: L1" Outdoor Unit: Defective Inverter Pcb

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.35 “ ” Outdoor Unit: Defective Inverter PCB Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Malfunction is detected based on the current value during waveform output before starting compressor.
  • Page 286 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 Replace the lead wires.

  • Page 287: L4" Outdoor Unit: Malfunction Of Inverter Radiation Fin Temperature Rise

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.36 “ ” Outdoor Unit: Malfunction of Inverter Radiation Fin Temperature Rise Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction...
  • Page 288 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. While in monitor mode, check the unit concerned. The radiation fin of the inverter PCB concerned Faulty radiation fin from the power exceeded a temperature...

  • Page 289: L5" Outdoor Unit: Momentary Overcurrent Of Inverter Compressor

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.37 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) Models Method of Malfunction is detected from current flowing in the power transistor. (32.3 A) Malfunction Detection Malfunction...
  • Page 290 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 291: L8" Outdoor Unit: Momentary Overcurrent Of Inverter Compressor

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.38 “ ” Outdoor Unit: Momentary Overcurrent of Inverter Compressor Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected.
  • Page 292 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 293: L9" Outdoor Unit: Inverter Compressor Starting Failure

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.39 “ ” Outdoor Unit: Inverter Compressor Starting Failure Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Detect the failure based on the signal waveform of the compressor. Malfunction Detection Malfunction...
  • Page 294 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. While in monitor mode, check the unit concerned. Go on to the next page. Check if it is the first (Starting failure due to aged time to start after...
  • Page 295 SiBE31-801_C Troubleshooting by Indication on the Remote Controller 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 296: Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pcb

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.40 “ ” Outdoor Unit: Malfunction of Transmission between Inverter and Control PCB Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction...
  • Page 297 SiBE31-801_C 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. Does the model setting Was the PCB (A1P) Make correct model setting. of the spare PCB match replaced with a (For setting procedure, refer to...
  • Page 298 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting 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 following the displayed " " displayed? malfunction code.

  • Page 299: P1" Outdoor Unit: Inverter Over-Ripple Protection

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.41 “ ” Outdoor Unit: Inverter Over-Ripple Protection Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Imbalance in supply voltage is detected in PCB. Malfunction Detection Malfunction When the resistance value of thermistor becomes a value equivalent to open or short circuited status.
  • Page 300 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. Troubleshooting...

  • Page 301: P4" Outdoor Unit: Malfunction Of Inverter Radiation Fin Temperature Rise Sensor

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.42 “ ” Outdoor Unit: Malfunction of Inverter Radiation Fin Temperature Rise Sensor Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction...

  • Page 302: Pj" Outdoor Unit: Faulty Field Setting After Replacing Main Pcb Or Faulty Combination Of Pcb

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.43 “ ” Outdoor Unit: Faulty Field Setting after Replacing Main PCB or Faulty Combination of PCB Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of This malfunction is detected according to communications with the inverter. Malfunction Detection Malfunction...
  • Page 303 SiBE31-801_C 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 304: U0" Outdoor Unit: Refrigerant Shortage Alert

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.44 “ ” Outdoor Unit: Refrigerant Shortage Alert Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) Models Method of Detect refrigerant shortage based on the temperature difference between low pressure or suction pipe and heat exchanger. Malfunction Detection Malfunction...
  • Page 305 SiBE31-801_C 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 306: U1" Reverse Phase, Open Phase

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.45 “ ” Reverse Phase, Open Phase Remote Controller Display Applicable RTSQ8P~16P 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 307: U2" Outdoor Unit: Power Supply Insufficient Or Instantaneous Failure

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.46 “ ” Outdoor Unit: Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit) Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction...
  • Page 308 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check for power supply conditions. (1) Is the power supply voltage 200VAC±10%? (2) Does the power supply have any open phase or erroneous wiring? (3) Does the power supply imbalance...
  • Page 309 SiBE31-801_C Troubleshooting by Indication on the Remote Controller Troubleshooting Turn ON the power supply, and then press the ON button. The system enters standby Replace the inverter PCB. mode before the outdoor unit (Faulty noise filter) fan starts rotating. The system enters standby mode Replace the inverter PCB.

  • Page 310: U3" Outdoor Unit: Check Operation Is Not Executed

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.47 “ ” Outdoor Unit: Check Operation is not Executed Remote Controller Display Applicable RTSQ8P~16P (Outdoor Unit) 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 311: U4" Malfunction Of Transmission Between Indoor Units

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.48 “ ” Malfunction of Transmission between Indoor Units Remote Controller Display Applicable All model of indoor unit RTSQ8P~16P (Outdoor Unit) Models Method of Check if the transmission between indoor unit and outdoor unit is correctly executed using micro-computer.
  • Page 312 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check if indoor unit PCB or outdoor unit PCB has been replaced. Or check Press the rewiring button on the if indoor/ outdoor, main PCB of the master outdoor...

  • Page 313: U5" Indoor Unit: Malfunction Of Transmission Between

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.49 “ ” 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 314: U7" Outdoor Unit: Transmission Failure (Across Outdoor Units)

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.50 “ ” Outdoor Unit: Transmission Failure (Across Outdoor Units) Remote Controller Display Applicable All models of outdoor units and function unit Models Method of Micro-computer checks if transmission between outdoor units. Malfunction Detection Malfunction...
  • Page 315 SiBE31-801_C 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 LED lamps for “Confirmation of malfunction 3” corresponding to the malfunction code “...
  • Page 316 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 Confirmation of malfunction 3 malfunction 4 Check if any disconnection or connection error is Correct the connecting wiring detected in connecting...

  • Page 317: Troubleshooting By Indication On The Remote Controller

    SiBE31-801_C 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 2 Confirmation of Confirmation of malfunction 3 malfunction 4 Switch cooling/ Set the cooling/heating switch of heating in a lump.
  • Page 318 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 Confirmation of malfunction 3 malfunction 4 Check the connection status of connecting wires of Multi Slave 1 with Correct the connecting wires of the outdoor multi.
  • Page 319 SiBE31-801_C 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 6 Confirmation of Confirmation of malfunction 3 malfunction 4 Are manual address settings (of the Correct the manual address slave units 1 and 2) correct in order to settings.
  • Page 320 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Diagnosis Flow 9 Confirmation of Confirmation of malfunction 3 malfunction 4 Is a function unit connected? Connect the function unit.

  • Page 321: U8" Indoor Unit: Malfunction Of Transmission Between

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.51 “ ” 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 322: U9" Indoor Unit: Malfunction Of Transmission Between

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.52 “ ” Indoor Unit: Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable All indoor unit models RTSQ8P~16P (Outdoor Unit) Models Method of Detect malfunction signal for the other indoor units within the circuit by outdoor unit PCB. Malfunction Detection Malfunction...

  • Page 323: Ua" Improper Combination Of Indoor And Outdoor Units

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.53 “ ” Improper Combination of Indoor and Outdoor Units, Indoor Units and Remote Controller Remote Controller Display Applicable All models of indoor unit RTSQ8P~16P (Outdoor Unit) and function unit Models Method of When the model data is different between the indoor units, outdoor units and function units.
  • Page 324 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 325 SiBE31-801_C 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 Confirmation of malfunction 3 malfunction 4 The number of indoor units connected to the Replace the main PCB of the same refrigerant circuit...
  • Page 326 Troubleshooting by Indication on the Remote Controller SiBE31-801_C 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 Confirmation of malfunction 3 malfunction 4 Check if the Check if the unit outdoor unit is not connected...

  • Page 327: Uc" Address Duplication Of Centralized Controller

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.54 “ ” Address Duplication of Centralized Controller Remote Controller Display Applicable All indoor unit models Centralized controller Models Method of The principal indoor unit detects the same address as that of its own on any other indoor unit. Malfunction Detection Malfunction...

  • Page 328: Ue" Malfunction Of Transmission Between Centralized Controller And Indoor Unit

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.55 “ ” Malfunction of Transmission between Centralized Controller and Indoor Unit Remote Controller Display Applicable All models of indoor units 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 329 SiBE31-801_C 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 330 Troubleshooting by Indication on the Remote Controller SiBE31-801_C Troubleshooting Check the transmission wiring between centralized controller for any broken Abnormal wire. For details, refer to Correct the wiring. information in the “Procedure for checking broken wires” section. CHECK 7 Normal Has the master unit Correct the connection of the central setting connector...

  • Page 331: Uf" System Is Not Set Yet

    SiBE31-801_C Troubleshooting by Indication on the Remote Controller 4.56 “ ” System is not Set yet Remote Controller Display Applicable All indoor unit models RTSQ8P~16P (Outdoor Unit) Models 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 332: Uh" Malfunction Of System, Refrigerant System Address Undefined

    Troubleshooting by Indication on the Remote Controller SiBE31-801_C 4.57 “ ” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All models of indoor units RTSQ8P~16P (Outdoor Unit) Models Method of Detect an indoor unit with no address setting. Malfunction Detection Malfunction...
  • Page 333 SiBE31-801_C 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 334: Troubleshooting (Op: Centralized Remote Controller)

    Troubleshooting (OP: Centralized Remote Controller) SiBE31-801_C 5. 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 335: M8" Malfunction Of Transmission Between

    SiBE31-801_C 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 336: Ma" Improper Combination Of Optional Controllers For Centralized Control

    Troubleshooting (OP: Centralized Remote Controller) SiBE31-801_C “ ” 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 337 SiBE31-801_C 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 338: Mc" Address Duplication, Improper Setting

    Troubleshooting (OP: Centralized Remote Controller) SiBE31-801_C “ ” Address Duplication, Improper Setting 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 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 339: Troubleshooting (Op: Unified On/Off Controller)

    SiBE31-801_C Troubleshooting (OP: Unified ON/OFF Controller) 6. Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All model of indoor units Models Unified ON/OFF controller Method of Detect the malfunction according to DIII-NET transmission data. Malfunction Detection Malfunction...
  • Page 340 Troubleshooting (OP: Unified ON/OFF Controller) SiBE31-801_C 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 341: Display "Under Centralized Control" Blinks (Repeats Single Blink)

    SiBE31-801_C 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 342 Troubleshooting (OP: Unified ON/OFF Controller) SiBE31-801_C 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 343 SiBE31-801_C 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 344: Display "Under Centralized Control" Blinks (Repeats Double Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) SiBE31-801_C 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 345: Troubleshooting (Heat Reclaim Ventilation)

    SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 7. Troubleshooting (Heat Reclaim Ventilation) “ ” Error of External Protection Device Remote Error Code Inspection OFF Unit No. Blinking Controller LCD Display Applicable Heat reclaim ventilation Models Method of Detect abnormal output from the external safety device with contact input (between J1 and JC). Malfunction Detection Malfunction...

  • Page 346: 64", "65" Indoor Air Thermistor Error

    Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C “ ”, “ ” Indoor Air Thermistor Error Remote Error Code Inspection OFF Unit No. Blinking Controller LCD Display Applicable Heat reclaim ventilation Models Method of Temperature detected by inside air temperature sensor is used to detect errors. Malfunction Detection Malfunction...

  • Page 347: 6A" Damper System Error (Alarm)

    SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) “ ” Damper System Error (Alarm) Remote Error Code Inspection OFF Unit No. Blinking Controller LCD Display Applicable Heat reclaim ventilation Models Method of Measurement of damper motor limit ON/OFF time. Malfunction Detection Malfunction When damper motor limit switch 1 (or 2) remains ON (or OFF) for more than a certain time duration after ventilation mode is changed.

  • Page 348: 6A" Damper System Error (Alarm)

    Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C “ ” Damper System Error (Alarm) Remote Error Code Inspection Blinking Unit No. Blinking Controller LCD Display Applicable Heat reclaim ventilation Models Method of Measurement of damper motor limit switch ON/OFF time and temperatures detected by outdoor and indoor air thermistor.

  • Page 349: 6F" Malfunction Of Simplified Remote Controller

    SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) “ ” Malfunction of Simplified Remote Controller Remote Error Code Inspection OFF Unit No. Blinking Controller LCD Display Applicable Heat reclaim ventilation Models Method of Check with the micro controller whether or not the signal between the simplified remote controller and the control PCB is able to properly detect the malfunction.
  • Page 350 Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C 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 351 SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 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 352 Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C 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 353 SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 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 354 Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C 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 355 SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 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" that is farthest from the centralized remote controller, and then conduct continuity checks between the transmission wiring terminal blocks F1 and F2 of the centralized remote controller using a multiple meter.
  • Page 356 Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C 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 357 SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 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 358 Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C 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 Overcharge of refrigerant CHECK 11 ←...
  • Page 359 SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 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 360 Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C 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 361 SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 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 362 Troubleshooting (Heat Reclaim Ventilation) SiBE31-801_C 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 • Faulty inverter PCB Overcurrent of inverter •...
  • Page 363 SiBE31-801_C Troubleshooting (Heat Reclaim Ventilation) 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 364: Part 7 Appendix

    SiBE31-801_C Part 7 Appendix 1. Piping Diagrams..................354 1.1 Outdoor Unit ..................354 1.2 Indoor Unit....................359 1.3 BS Unit ....................366 2. Wiring Diagrams for Reference............367 2.1 Outdoor Unit ..................367 2.2 Field Wiring ..................371 2.3 Indoor Unit....................373 2.4 BS Unit ....................389 3. List of Electrical and Functional Parts ..........391 3.1 Outdoor Unit ..................391 3.2 Indoor Unit....................395 4.

  • Page 365: Piping Diagrams

    SiBE31-801_C Piping Diagrams 1. Piping Diagrams Outdoor Unit RTSQ8PY1 Appendix...
  • Page 366 Piping Diagrams SiBE31-801_C RTSQ10PY1 Appendix...
  • Page 367 SiBE31-801_C Piping Diagrams RTSQ12PY1 Appendix...
  • Page 368 Piping Diagrams SiBE31-801_C RTSQ14PY1, 16PY1 Appendix...
  • Page 369 SiBE31-801_C Piping Diagrams BTSQ20PY1 Appendix...

  • Page 370: Indoor Unit

    Piping Diagrams SiBE31-801_C Indoor Unit FXFQ-P HEAT EXCHANGER LIQUID PIPE CONNECTION PORT FILTER ELECTRONIC EXPANSION FILTER VALVE GAS PIPE CONNECTION PORT REFRIGERANT FLOW COOLING HEATING REFRIGERANT PIPE CONNECTION PORT DIAMETERS MODEL LIQUID φ φ FXFQ20, 25, 32, 40, 50P 12.70 6.35 φ...
  • Page 371 SiBE31-801_C Piping Diagrams 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 372 Piping Diagrams SiBE31-801_C 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 373 SiBE31-801_C Piping Diagrams 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 374 Piping Diagrams SiBE31-801_C 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 375 SiBE31-801_C Piping Diagrams FXMQ125MF / 200MF / 250MFV1 Gas pipe connection port Heat exchanger Filter Capillary tube Distributor Solenoid Liquid pipe valve connection port Check valve Filter Filter Electronic expansion valve 4D018650C Refrigerant pipe connection port diameters (mm) Model Liquid φ15.9 φ9.5 FXMQ125MFV1...
  • Page 376 Piping Diagrams SiBE31-801_C FXUQ + BEVQ Indoor Unit Indoor heat exchanger Field piping φ9.5 C1220T-O To Outdoor unit Field piping φ15.9 C1220T-O Indoor unit 4D037995J Connection Unit Electronic Liquid piping Liquid piping expansion valve connection port connection port Filter Filter Gas piping Gas piping connection port...

  • Page 377: Bs Unit

    SiBE31-801_C Piping Diagrams 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 378: Wiring Diagrams For Reference

    Wiring Diagrams for Reference SiBE31-801_C 2. Wiring Diagrams for Reference Outdoor Unit RTSQ8PY1 Appendix...
  • Page 379 SiBE31-801_C Wiring Diagrams for Reference RTSQ10PY1, 12PY1 Appendix...
  • Page 380 Wiring Diagrams for Reference SiBE31-801_C RTSQ14PY1, 16PY1 Appendix...
  • Page 381 SiBE31-801_C Wiring Diagrams for Reference BTSQ20PY1 Appendix...

  • Page 382: Field Wiring

    Wiring Diagrams for Reference SiBE31-801_C Field Wiring RTSYQ10P / 14P / 16PY1 Appendix...
  • Page 383 SiBE31-801_C Wiring Diagrams for Reference RTSYQ20PY1 Appendix...

  • Page 384: Indoor Unit

    Wiring Diagrams for Reference SiBE31-801_C Indoor Unit FXFQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125P8VEB 20~125-CLASS M1P M ~ X24A H05VV-U3G2.5 Indoor X17A X18AX15A X24A X25A Q1DI X27A X35A X33A Receiver/Display unit Control box X33A X35A...
  • Page 385 SiBE31-801_C Wiring Diagrams for Reference 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 CENTRALIZED...
  • Page 386 Wiring Diagrams for Reference SiBE31-801_C 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 CENTRALIZED REMOTE CONTROLLER (Note 1) WIRED REMOTE CONTROLLER...
  • Page 387 SiBE31-801_C Wiring Diagrams for Reference 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 388 Wiring Diagrams for Reference SiBE31-801_C FXKQ25MA / 32MA / 40MA / 63MAVE Appendix...
  • Page 389 SiBE31-801_C Wiring Diagrams for Reference FXDQ20PB / 25PB / 32PB / 40NB / 50NB / 63NBVE t° t° t° POWER SUPPLY Note: 3 ~220-240V X13A X12A X11A X16A Input from outside 50Hz Note: 1 Transmission wiring X30A centralized remote control X31A t°...
  • Page 390 Wiring Diagrams for Reference SiBE31-801_C 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 391 SiBE31-801_C Wiring Diagrams for Reference FXSQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125P7VEB R2T R3T Indoor 1N~220-240V 50Hz t° t° t° GRN/YLW YLW YLW N=1 RED X16A X18A X17A X15A X25A Q1D1 Input from outside X27A...
  • Page 392 Wiring Diagrams for Reference SiBE31-801_C FXMQ20P / 25P / 32P / 40P / 50P / 63P / 80P / 100P / 125P / 140PVE 3D058783D Appendix...
  • Page 393 SiBE31-801_C Wiring Diagrams for Reference FXMQ200MA / 250MAVE Appendix...
  • Page 394 Wiring Diagrams for Reference SiBE31-801_C FXHQ32MA / 63MA / 100MAVE Appendix...
  • Page 395 SiBE31-801_C Wiring Diagrams for Reference FXAQ20P / 25P / 32P / 40P / 50P / 63PV1 Appendix...
  • Page 396 Wiring Diagrams for Reference SiBE31-801_C FXLQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE FXNQ20MA / 25MA / 32MA / 40MA / 50MA / 63MAVE Appendix...
  • Page 397 SiBE31-801_C Wiring Diagrams for Reference FXUQ71MA / 100MA / 125MAV1 Appendix...
  • Page 398 Wiring Diagrams for Reference SiBE31-801_C BEVQ71MA / 100MA / 125MAVE POWER SUPPLY BEV UNIT 220-240V 220V PRINTED CIRCUIT BOARD ASSY POWER SUPPLY PRINTED CIRUIT BOARD 50Hz 60Hz ASSY (220-240V/16V) FUSE ( B , 10A, 250V) LIGHT EMITTING DIODE (SERVICE MONITOR-GREEN) THERMISTOR (GAS) SELECTOR SWITCH (M/S) TERMINAL STRIP (POWER)
  • Page 399 SiBE31-801_C Wiring Diagrams for Reference FXMQ125MF / 200MF / 250MFV1 CONTROL BOX POWER SUPPLY X18A ~ 50Hz 220 - 240V IN CASE OF FXMQ 200 · 250MFV1 X1M L N R1T R2T NOTE)5 t˚ t˚ t˚ t˚ A1P RED X30A NOTE 4) X13A X12A...

  • Page 400: Bs Unit

    Wiring Diagrams for Reference SiBE31-801_C BS Unit BSV4Q100PV1 Appendix...
  • Page 401 SiBE31-801_C Wiring Diagrams for Reference BSV6Q100PV1 Appendix...

  • Page 402: List Of Electrical And Functional Parts

    List of Electrical and Functional Parts SiBE31-801_C 3. List of Electrical and Functional Parts Outdoor Unit 3.1.1 RTSQ8PY1 Model Item Name Symbol RTSQ8PY1 Type JT1GEDKYR@SB Inverter OC protection 14.7A device Type — Compressor STD 1 OC protection — device Type —...
  • Page 403 SiBE31-801_C List of Electrical and Functional Parts 3.1.2 RTSQ10PY1, 12PY1 Model Item Name Symbol RTSQ10PY1 RTSQ12PY1 Type JT1GEDKYR@SB Inverter OC protection 14.7A device Type JT170GEKYE@SB Compressor STD 1 OC protection 15.0A device Type — STD 2 OC protection — device OC protection Fan motor 3.0A...
  • Page 404 List of Electrical and Functional Parts SiBE31-801_C 3.1.3 RTSQ14PY1, 16PY1 Model Item Name Symbol RTSQ14PY1 RTSQ16PY1 Type JT1GEDKYR@SB Inverter OC protection 14.7A device Type JT170GEKYE@SB Compressor STD 1 OC protection 15.0A device Type JT170GEKYE@SB STD 2 OC protection 15.0A device OC protection Fan motor M1F, M2F...
  • Page 405 SiBE31-801_C List of Electrical and Functional Parts 3.1.4 BTSQ20PY1 Model Item Name Symbol BTSQ20PY1 Type JT1GEDKYR@SB Inverter OC protection 14.7A device Type — Compressor STD 1 OC protection — device Type — STD 2 OC protection — device OC protection Fan motor —...

  • Page 406: Indoor Unit

    List of Electrical and Functional Parts SiBE31-801_C Indoor Unit 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) Drain Pump...
  • Page 407 SiBE31-801_C 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 Fan Motor 1φ55W 4P ±5 ±20 Thermal Fuse OFF : 130...
  • Page 408 List of Electrical and Functional Parts SiBE31-801_C 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 1φ62W 1φ130W Fan Motor Thermal protector Motors...
  • Page 409 SiBE31-801_C 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 410 List of Electrical and Functional Parts SiBE31-801_C 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 Fan Motor 1φ40W 1φ43W Motors...
  • Page 411 SiBE31-801_C List of Electrical and Functional Parts Model Parts Name Symbol Remark FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Wired Remote BRC1E51 Controller Remote Option Controller Wireless Remote BRC7C528W Controller AC 220~240V 50Hz Fan Motor 1φ45W 1φ90W Thermal protector 130°C Thermal protector 130°C : OFF 83°C : ON Motors AC220-240V (50Hz)

  • Page 412: Option List

    Option List SiBE31-801_C 4. Option List Option List of Controllers Operation Control System Optional Accessories Type FXFQ-P FXZQ-M FXCQ-M FXKQ-MA FXDQ-NB FXDQ-M FXUQ-MA FXSQ-P FXMQ-MA FXMQ-P FXHQ-MA FXAQ-MA FXLQ-MA FXDQ-PB FXNQ-MA Item Wireless BRC7F634F BRC7E530 BRC7C62 BRC4C61 BRC4C65 BRC4C62 BRC7C528W BRC4C62 BRC4C65 BRC7E63W...
  • Page 413 SiBE31-801_C Option List 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 414: Option Lists (Outdoor Unit)

    Option List SiBE31-801_C Option Lists (Outdoor Unit) RTSYQ10 ~ 20PY1 Models RTSYQ14PY1 RTSYQ10PY1 RTSYQ20PY1 Optional Accessories RTSYQ16PY1 KHRP26MC22T KHRP26MC22T KHRP26MC22T KHRP26MC33T KHRP26MC33T KHRP26MC33T Distributive piping REFNET joint — KHRP26MC72T KHRP26MC72T — — KHRP26MC73T Outdoor unit multi connection piping kit — —...

  • Page 415: Example Of Connection (R-410A Type)

    SiBE31-801_C Example of Connection (R-410A Type) 5. Example of Connection (R-410A Type) Example of connection Branch with REFNET joint Branch with REFNET joint and header Branch with REFNET header (Connection of 8 indoor units) Outdoor Function unit Outdoor Function unit (*1) “...
  • Page 416 Example of Connection (R-410A Type) SiBE31-801_C Outdoor unit multi connection piping kit and How to select the REFNET joint How to select the REFNET header • When using REFNET joint at the first branch counted from the outdoor unit side, •...
  • Page 417 SiBE31-801_C Example of Connection (R-410A Type) How to calculate the additional refrigerant to be charged Total length(m) Total length(m) FOR THE SYSTEM 0.37 0.26 of liquid piping of liquid piping Additional refrigerant to be charged : R(kg) SYSTEM NAME THE AMOUNT OF REFRIGERANT size at φ22.2 size at φ19.1 (R should be rounded off in units of 0.1 kg.)
  • Page 418 Example of Connection (R-410A Type) SiBE31-801_C Appendix...

  • Page 419: Thermistor Resistance / Temperature Characteristics

    SiBE31-801_C Thermistor Resistance / Temperature Characteristics 6. 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 TºC kΩ...
  • Page 420 Thermistor Resistance / Temperature Characteristics SiBE31-801_C Outdoor Unit Thermistors for Discharge Pipe ∼ (R3T, R31 33T) T°C kΩ T°C kΩ T°C kΩ T°C kΩ T°C kΩ T°C kΩ 640.44 624.65 72.32 50.5 70.96 13.35 100.5 13.15 609.31 594.43 69.64 51.5 68.34 12.95 101.5...

  • Page 421: Pressure Sensor

    SiBE31-801_C Pressure Sensor 7. 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 422: Method Of Checking The Inverter's Power Transistors And Diode Modules

    Method of Checking the Inverter’s Power Transistors and Diode Modules SiBE31-801_C 8. 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 423 SiBE31-801_C 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 Ω...

  • Page 424: Part 8 Precautions For New Refrigerant (R-410A)

    SiBE31-801_C Part 8 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........414 1.1 Outline ....................414 1.2 Refrigerant Cylinders................416 1.3 Service Tools..................417 Precautions for New Refrigerant (R-410A)

  • Page 425: Precautions For New Refrigerant (R-410A)

    SiBE31-801_C 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 426 Precautions for New Refrigerant (R-410A) SiBE31-801_C 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 427: Refrigerant Cylinders

    SiBE31-801_C 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 428: Service Tools

    Precautions for New Refrigerant (R-410A) SiBE31-801_C 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.
  • Page 429 SiBE31-801_C 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 430 Precautions for New Refrigerant (R-410A) SiBE31-801_C 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 431 SiBE31-801_C 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 432 Precautions for New Refrigerant (R-410A) SiBE31-801_C • 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 433 SiBE31-801_C 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 434: Revision History

    Revision History Month / Year Version Revised contents 04/2008 SiBE31-801 – 08/2009 SiBE31-801_A Model change of the concealed ceiling type 12/2010 SiBE31-801_B Correction of data 03/2011 SiBE31-801_C Correction of text...
  • Page 435 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.

This manual is also suitable for:

Rtsq16py1Rtsq14py1Rtsq10py1

Table of Contents