Daikin E-Series Service Manual
  1. Manuals
  2. Brands
  3. Daikin Manuals
  4. Heat Pump
  5. E Series
  6. Service manual

Daikin E-Series Service Manual

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

Advertisement

Quick Links

SiAU18 - 715
E-Series
[Applied Models]
Super Multi Plus : Cooling Only
Super Multi Plus : Heat Pump

Advertisement

Table of Contents
loading

Related Manuals for Daikin E-Series

Summary of Contents for Daikin E-Series

  • Page 1 SiAU18 - 715 E-Series [Applied Models] Super Multi Plus : Cooling Only Super Multi Plus : Heat Pump...
  • Page 2 SiAU18-715 SUPER MULTI PLUS E-Series Cooling Only Indoor Unit FTKS20DVMA CDKS25CVMA FFQ25B8V1B FTKS25EVMA CDKS35CVMA FFQ35B8V1B FTKS35EVMA CDKS50CVMA FFQ50B8V1B FTKS50FVMA CDKS60CVMA FFQ60B8V1B FTKS60FVMA CDKS25EAVMA FCQ35BVE FTKS71FVMA CDKS35EAVMA FCQ50BVE FCQ60BVE FCQ71BVE FBQ60BV1 FBQ71BV1 FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Outdoor Unit RMKS112EV1A BPMKS967A2 RMKS140EV1A BPMKS967A3...
  • Page 3 SiAU18-715 Heat Pump Indoor Unit FTXS20DVMA FDXS25CVMA FLXS25BVMA FFQ25B8V1B FTXS25EVMA FDXS35CVMA FLXS35BVMA FFQ35B8V1B FTXS35EVMA FDXS50CVMA FLXS50BVMA FFQ50B8V1B FTXS50FVMA FDXS60CVMA FLXS60BVMA FFQ60B8V1B FTXS60FVMA CDXS25EAVMA FVXS25FV1A FCQ35BVE FTXS71FVMA CDXS35EAVMA FVXS35FV1A FCQ50BVE FVXS50FV1A FCQ60BVE FCQ71BVE FBQ60BV1 FBQ71BV1 FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Outdoor Unit RMXS112EV1A BPMKS967A2 RMXS140EV1A BPMKS967A3...

  • Page 4: Table Of Contents

    SiAU18-715 1. Introduction ..................viii 1.1 Safety Cautions ..................viii 1.2 Used Icons ..................... xii Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................7 Part 2 Specifications ..............13 1. Specifications ..................14 1.1 Cooling Only...................14 1.2 Heat Pump .....................23 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 5 SiAU18-715 3. Special Control..................83 3.1 Startup Control ..................83 3.2 Oil Return Operation ................84 3.3 Defrosting Operation ................86 3.4 Pump-down Residual Operation ............87 3.5 Restart Standby..................87 3.6 Stopping Operation ................88 4. Protection Control .................89 4.1 High Pressure Protection Control............89 4.2 Low Pressure Protection Control............90 4.3 Discharge Pipe Protection Control ............91 4.4 Inverter Protection Control ..............92 4.5 Freeze-up Protection Control ..............93...
  • Page 6 SiAU18-715 4.3 Initial Setting Contents .................154 4.4 Local Setting Mode Number..............155 4.5 Detailed Explanation of Setting Modes ..........156 4.6 Centralized Group No. Setting .............160 4.7 Maintenance Mode Setting..............161 5. Test Operation and Field Setting for RA Indoor Unit......162 5.1 Test Operation from the Remote Controller .........162 5.2 Jumper Settings ...................163 Part 7 Operation Manual ............
  • Page 7 SiAU18-715 5.10 Malfunction of Suction Air Thermistor ..........343 5.11 Malfunction of Remote Controller Thermistor........344 5.12 Transmission Error (between Indoor Unit and Remote Controller) ..345 5.13 Transmission Error (between Main and Sub Remote Controller)..346 5.14 Malfunction of Field Setting Switch ............347 5.15 Check ....................348 6.
  • Page 8 SiAU18-715 7.33 Excessive Number of Indoor Units ............396 7.34 Address Duplication of Central Remote Controller.......397 7.35 Malfunction of Transmission between Central Remote Controller and Indoor Unit....................398 7.36 System is not Set yet................400 7.37 Malfunction of System, Refrigerant System Address Undefined..401 8.

  • Page 9: Introduction

    Introduction SiAU18-715 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 10 SiAU18-715 Introduction Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant.
  • Page 11 Introduction SiAU18-715 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire.
  • Page 12 SiAU18-715 Introduction Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame.

  • Page 13: Used Icons

    Introduction SiAU18-715 Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor.

  • Page 14: Part 1 List Of Functions

    SiAU18-715 Part 1 List of Functions 1. List of Functions ..................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................7 List of Functions...

  • Page 15: List Of Functions

    List of Functions SiAU18-715 1. List of Functions Cooling Only Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean –5 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 16 SiAU18-715 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 17 List of Functions SiAU18-715 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 18 SiAU18-715 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 19 List of Functions SiAU18-715 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...

  • Page 20: Heat Pump

    SiAU18-715 List of Functions Heat Pump Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — Function Clean –5 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — –15 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 21 List of Functions SiAU18-715 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 22 SiAU18-715 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 23 List of Functions SiAU18-715 Category Functions Category Functions Basic Inverter (with Inverter Power Health & Air Purifying Filter — Function Control) Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — Air Purifying Filter with Operation Limit for Heating (°CWB) —...
  • Page 24 SiAU18-715 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 25 List of Functions SiAU18-715 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...

  • Page 26: Part 2 Specifications

    SiAU18-715 Part 2 Specifications 1. Specifications ..................14 1.1 Cooling Only...................14 1.2 Heat Pump .....................23 Specifications...

  • Page 27: Specifications

    Specifications SiAU18-715 Specifications Cooling Only 1.1.1 Outdoor Units 50Hz 220-230-240V Model RMKS112EV1A RMKS140EV1A RMKS160EV1A Cooling Capacity 11.2 (9,630) 14.0 (12,040) 15.5 (13,330) (kcal/h) Total Indoor Unit Capacity 5.5~14.5 7.0~18.2 8.0~20.8 Power Consumption — Running Current — Casing Color Ivory White Type Hermetically Sealed Scroll Type Model...
  • Page 28 SiAU18-715 Specifications 1.1.2 BP Units 50Hz 220-230-240V Model BPMKS967A2 BPMKS967A3 Connectable Indoor Units 1~2 Units 1~3 Units Casing Color Paintingless Power Consumption Running Current 0.05 0.05 Refrigerant Type R-410A Dimension (H×W×D) 180×294(650)*×350 Package Dimension (H×W×D) 257×738×427 Machine Weight Gross Weight Number of Wiring Connections 4 for Interunit Wiring φ...
  • Page 29 Specifications SiAU18-715 1.1.3 Indoor Units Wall Mounted Type 50Hz 220-230-240V Model FTKS20DVMA FTKS25EVMA Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 8.7 (307) 8.7 (307) 6.7 (237) 6.7 (237) m³/min Air Flow Rates (cfm) 4.7 (166) 4.7 (166) 3.9 (138) 3.9 (138) Type...
  • Page 30 SiAU18-715 Specifications 50Hz 220-230-240V Model FTKS60FVMA FTKS71FVMA Rated Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 17.4 (614) 13.9 (491) 14.6 (516) m³/min Air Flow Rates (cfm) 11.5 (406) 11.9 (420) 10.0 (353) 11.2 (395) Type Cross Flow Fan Cross Flow Fan Motor Output...
  • Page 31 Specifications SiAU18-715 Duct Connected Type 50Hz 230V Model CDKS25CVMA CDKS35CVMA Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 10.0 (353) 8.8 (311) 9.3 (328) m³/min Air Flow Rates (cfm) 8.0 (282) 8.5 (300) 6.7 (237) 7.0 (247) Type Sirocco Fan...
  • Page 32 SiAU18-715 Specifications 50Hz 220-230-240V Model CDKS25EAVMA CDKS35EAVMA Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) m³/min Air Flow Rate (cfm) 7.3 (258) 7.3 (258) 6.2 (219) 6.2 (219) Type Sirocco Fan Sirocco Fan Motor Output...
  • Page 33 Specifications SiAU18-715 Ceiling Mounted Cassette Type 50Hz 230V Model FFQ25B8V1B FFQ35B8V1B Rated Capacity 2.5kW Class 3.5kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×700×700 55×700×700 9.0 (318) 10.0 (353) — — m³/min Air Flow Rates (cfm) 6.5 (230) 6.5 (230) —...
  • Page 34 SiAU18-715 Specifications 50Hz 220-230-240V Model FCQ35BVE FCQ50BVE Rated Capacity 3.5kW Class 5.0kW Class Color White White Decoration Panel Dimensions (H×W×D) 40×950×950 40×950×950 14.0 (494) 15.0 (530) — — m³/min Air Flow Rates (cfm) 10.0 (353) 11.0 (388.3) — — Type Turbo Fan Turbo Fan Motor Output...
  • Page 35 Specifications SiAU18-715 Ceiling Mounted Built-in Type 50Hz 220-230-240V Model FBQ60BV1 FBQ71BV1 Rated Capacity 6.0kW Class 7.1kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×1,100×500 55×1,100×500 17.0 (600) 19.0 (670) — — m³/min Air Flow Rates (cfm) 13.0 (459) 14.0 (494) —...

  • Page 36: Heat Pump

    SiAU18-715 Specifications Heat Pump 1.2.1 Outdoor Units 50Hz 220-230-240V Model RMXS112EV1A RMXS140EV1A RMXS160EV1A Cooling Capacity 11.2 (9,630) 14.0 (12,040) 15.5 (13,330) (kcal/h) Heating Capacity 12.5 (10,750) 16.0 (13,760) 17.5 (15,050) (kcal/h) Total Indoor Unit Capacity 5.5~14.5 7.0~18.2 8.0~20.8 Power Consumption —...
  • Page 37 Specifications SiAU18-715 1.2.2 BP Units 50Hz 220-240V Model BPMKS967A2 BPMKS967A3 Connectable Indoor Units 1~2 Units 1~3 Units Casing Color Paintingless Power Consumption Running Current 0.05 0.05 Refrigerant Type R-410A Dimension (H×W×D) 180×294(650)*×350 Package Dimension (H×W×D) 257×738×427 Machine Weight Gross Weight Number of Wiring Connections 4 for Interunit Wiring φ...
  • Page 38 SiAU18-715 Specifications 1.2.3 Indoor Units Wall Mounted Typ 50Hz 220-230-240V FTXS20DVMA FTXS25EVMA Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 8.7 (307) 9.4 (332) 8.7 (307) 9.4 (332) 6.7 (237) 7.6 (268) 6.7 (237) 7.6 (268) m³/min...
  • Page 39 Specifications SiAU18-715 50Hz 220-230-240V FTXS60FVMA FTXS71FVMA Model Cooling Heating Cooling Heating Rated Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 17.4 (614) 17.4 (614) 21.5 (759) 13.9 (491) 15.3 (540) 14.6 (516) 18.0 (636) m³/min Air Flow Rates (cfm) 11.5 (406) 12.8 (452)
  • Page 40 SiAU18-715 Specifications Duct Connected Type 50Hz 220-230-240V FDXS25CVMA FDXS35CVMA Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 9.5 (335) 10.0 (353) 10.0 (353) 8.8 (311) 8.8 (311) 9.3 (328) 9.3 (328) m³/min Air Flow Rates (cfm)
  • Page 41 Specifications SiAU18-715 50Hz 220-230-240V CDXS25EAVMA CDXS35EAVMA Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) 8.0 (282) 8.0 (282) m³/min Air Flow Rates (cfm) 7.3 (258) 7.3 (258)
  • Page 42 SiAU18-715 Specifications Floor Standing Type 50Hz 220-230-240V FVXS25FV1A FVXS35FV1A Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color White White 8.2 (290) 8.8 (311) 8.5 (300) 9.4 (332) 6.5 (229) 6.9 (244) 6.7 (237) 7.3 (258) m³/min Air Flow Rates (cfm)
  • Page 43 Specifications SiAU18-715 Floor / Ceiling Suspended Dual Type 50Hz 230V FLXS25BVMA FLXS35BVMA Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 7.6 (268) 9.2 (325) 8.6 (304) 9.8 (346) 6.8 (240) 8.3 (293) 7.6 (268) 8.9 (314)
  • Page 44 SiAU18-715 Specifications Ceiling Mounted Cassette Type 50Hz 230V FFQ25B8V1B FFQ35B8V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×700×700 55×700×700 9.0 (318) 9.0 (318) 10.0 (353) 10.0 (353) — — —...
  • Page 45 Specifications SiAU18-715 50Hz 220-230V FCQ35BVE FCQ50BVE Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class Color White White Decoration Panel Dimensions (H×W×D) 40×950×950 40×950×950 14.0 (494) 15.0 (530) — — m³/min Air Flow Rates (cfm) 10.0 (353) 11.0 (388.3) —...
  • Page 46 SiAU18-715 Specifications Ceiling Mounted Built-in Type 50Hz 220-230-240V FBQ60BV1 FBQ71BV1 Model Cooling Heating Cooling Heating Rated Capacity 6.0kW Class 7.1kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×1100×500 55×1100×500 17.0 (600) 19.0 (670) — — m³/min Air Flow Rates (cfm) 13.0 (459) 14.0 (494)
  • Page 47 Specifications SiAU18-715 Ceiling Suspended Type 50Hz 220-230-240V FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Model Cooling Heating Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class 6.0kW Class Color White White White Decoration Panel Dimensions (H×W×D) — — — 13.0 (458) 13.0 (458) 13.0 (458) 13.0 (458) 17.0 (600)

  • Page 48: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiAU18-715 Part 3 Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram ..........36 1.1 Outdoor Unit ...................36 1.2 BP Unit ....................41 1.3 Wall Mounted Type 20/25/35 Class ............42 1.4 Wall Mounted Type 50/60/71 Class ............44 1.5 Duct Connected Type................46 1.6 Floor / Ceiling Suspended Dual Type.............48 1.7 Floor Standing Type ................51 1.8 Ceiling Mounted Cassette 600×600 Type ..........54...

  • Page 49: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 Printed Circuit Board Connector Wiring Diagram Outdoor Unit 1.1.1 Main PCB (A1P) Connectors Connector to Service PCB (A2P) X11A Connector for Outdoor Air Thermistor X12A Connector for Thermistors (Suction Pipe1, 2, Heat Exchanger, Discharge Pipe) 4) X13A Connector for Thermistors (Subcool Outlet, Liquid Pipe) X17A...
  • Page 50 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail X106A X107A X111A X66A X37A X81A X22A X21A X13A X11A X12A X18A X17A X32A X25A X26A X27A X28A 2P175758 Printed Circuit Board Connector Wiring Diagram...
  • Page 51 Printed Circuit Board Connector Wiring Diagram SiAU18-715 1.1.2 Service PCB (A2P) Connectors X205A Connector for Main PCB (A1P) Note: Other Designation H1P to H8P Service Monitor LED BS1 to BS5 Push Button Switch (Mode, Set, Return, Test, Reset) 3) DS1 DIP Switch PCB Detail X205A...
  • Page 52 SiAU18-715 Printed Circuit Board Connector Wiring Diagram 1.1.3 Noise Filter PCB (A3P) Connectors 1) LA, Terminal for X1M (Power Supply) 2) LB, Terminal for Main PCB (A1P) 3) E Terminal for Earth Note: Other Designation Fuse (250V 6.3A) PCB Detail 2P174186 Printed Circuit Board Connector Wiring Diagram...
  • Page 53 Printed Circuit Board Connector Wiring Diagram SiAU18-715 1.1.4 Cool / Heat Selector PCB (A4P) Connectors Connector for Main PCB (A1P) Note: Other Designation Cool / Heat Selector PCB Detail 2P174187 Printed Circuit Board Connector Wiring Diagram...

  • Page 54: Bp Unit

    SiAU18-715 Printed Circuit Board Connector Wiring Diagram BP Unit Connectors X20A Connector for Bypass Electronic Expansion Valve X21A X23A Connector for Electronic Expansion Valve to Room A, B and C X90A Connector for Thermistors Note: Other Designations Fuse (AC250V 3.15A) Terminal for Inter Connecting Wire to Room A Terminal for Inter Connecting Wire to Room B Terminal for Inter Connecting Wire to Room C...

  • Page 55: Wall Mounted Type 20/25/35 Class

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 Wall Mounted Type 20/25/35 Class Connectors PCB(1) (Control PCB) Connector for DC fan motor Connector for swing motor (horizontal blades) Connector for centralized control (HA) Connector for display PCB Connector for signal receiver PCB Connector for heat exchanger thermistor Connector for INTELLIGENT EYE sensor PCB PCB(2) (Signal Receiver PCB)
  • Page 56 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) LED A (R4986) PCB(2): Signal Receiver PCB PCB(3): Display PCB LED1 LED2 LED3 RTH1 (R5183) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram...

  • Page 57: Wall Mounted Type 50/60/71 Class

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 Wall Mounted Type 50/60/71 Class Connectors PCB(1) (Control PCB) Connector for DC fan motor Connector for swing motor (horizontal blades) Connector for swing motor (vertical blades) Connector for centralized control (HA) Connector for buzzer PCB Connector for signal receiver PCB Connector for heat exchanger thermistor Connector for Intelligent Eye sensor PCB...
  • Page 58 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) LED A (R2860) PCB(2): Signal Receiver PCB PCB(3): Buzzer PCB (R2861) RTH1 (R2862) PCB(4): Display PCB PCB(5): INTELLIGENT EYE sensor PCB LED1 LED2 LED3 (R2863) (R2864) Printed Circuit Board Connector Wiring Diagram...

  • Page 59: Duct Connected Type

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 Duct Connected Type Connectors PCB(1) (Control PCB) Connector for AC fan motor Connector for AC fan motor Connector for centralized control to 5 rooms Connector for display PCB Connector for heat exchanger thermistor PCB(2) (Display PCB) Connector for control PCB Note:...
  • Page 60 SiAU18-715 Printed Circuit Board Connector Wiring Diagram Detail PCB (2): Display PCB LED3 LED2 RTH1 Pb Free LED1 2P084375 Printed Circuit Board Connector Wiring Diagram...

  • Page 61: Floor / Ceiling Suspended Dual Type

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 Floor / Ceiling Suspended Dual Type Connectors PCB(1) (Control PCB) Connector for swing motor (horizontal swing) Connector for AC fan motor Connector for centralized control Connector for display PCB Connector for signal receiver PCB Connector for heat exchanger thermistor Connector for power supply PCB PCB(2) (Power Supply PCB)
  • Page 62 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB (indoor unit) PCB Detail PCB (2): Power Supply PCB Printed Circuit Board Connector Wiring Diagram...
  • Page 63 Printed Circuit Board Connector Wiring Diagram SiAU18-715 PCB (3): Display PCB PCB (4): Signal Receiver PCB EX511 REV 12 PHOTO 2P084377- 1 S31(RTH) (R4977) Printed Circuit Board Connector Wiring Diagram...

  • Page 64: Floor Standing Type

    SiAU18-715 Printed Circuit Board Connector Wiring Diagram Floor Standing Type Connectors PCB(1) (Power Supply PCB) 1) S8, S202, Connector for control PCB S204 PCB(2) (Control PCB) Connector for swing motor and lower air outlet motor Connector for centralized control Connector for display PCB S31, S32 Connector for room temperature / heat exchanger thermistor S7, S201,...
  • Page 65 Printed Circuit Board Connector Wiring Diagram SiAU18-715 PCB Detail PCB (1): Power Supply PCB (25, 35 class) PCB Detail PCB (1): Power Supply PCB (50 class) Printed Circuit Board Connector Wiring Diagram...
  • Page 66 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Control PCB (indoor unit) PCB (3): Display PCB PCB (4): Signal Receiver PCB Printed Circuit Board Connector Wiring Diagram...

  • Page 67: Ceiling Mounted Cassette 600×600 Type

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 Ceiling Mounted Cassette 600×600 Type Connectors PCB(1)(Control PCB [A1P]) Connector for terminal strip (for wired remote controller) 2) X10A, X11A Connector for transformer X15A Connector for float switch 4) X17A, X18A Connector for heat exchanger thermistor X19A Connector for room temperature thermistor X20A...
  • Page 68 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB (A1P) (indoor unit) X20A X25A X27A X33A X18A Capacity setting adaptor X19A X61A X36A X60A X40A (Service monitor LED) X24A X17A X35A X15A 2P095006 Printed Circuit Board Connector Wiring Diagram...
  • Page 69 Printed Circuit Board Connector Wiring Diagram SiAU18-715 PCB Detail PCB(2): Signal Receiver PCB (A3P) 3P156326 PCB(3): Display PCB (A4P) LED4 LED3 LED2 LED1 3P086209 Printed Circuit Board Connector Wiring Diagram...

  • Page 70: Ceiling Mounted Cassette Type (950×950)

    SiAU18-715 Printed Circuit Board Connector Wiring Diagram Ceiling Mounted Cassette Type (950×950) Connectors PCB(1)(Control PCB [A1P]) Connector for terminal strip (for wired remote controller) 2) X10A, X11A Connector for transformer X15A Connector for float switch 4) X17A, X18A Connector for heat exchanger thermistor X19A Connector for room temperature thermistor X20A...
  • Page 71 Printed Circuit Board Connector Wiring Diagram SiAU18-715 PCB Detail PCB(1): Control PCB (A1P) (indoor unit) X20A X25A X27A X11A X10A X33A X18A Capacity setting adaptor X19A X61A X60A X36A (Service monitor LED) X17A X15A 2P095006 X24A X35A Printed Circuit Board Connector Wiring Diagram...
  • Page 72 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(2): Signal Receiver PCB (A2P) 3P156326 PCB(3): Display PCB (A3P) LED2 LED1 LED3 LED4 3P008986 Printed Circuit Board Connector Wiring Diagram...

  • Page 73: 1.10 Ceiling Mounted Built-In Type

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 1.10 Ceiling Mounted Built-in Type Connectors Control PCB [A1P] Connector for terminal strip (for wired remote controller) 2) X10A, X11A Connector for transformer X15A Connector for float switch 4) X17A, X18A Connector for heat exchanger thermistor X19A Connector for room temperature thermistor X21A...
  • Page 74 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail Control PCB (A1P) (indoor unit) X21A X27A X25A X11A X10A X35A X33A X60A X61A 2P095008 X15A X18A X19A X17A Printed Circuit Board Connector Wiring Diagram...

  • Page 75: 1.11 Ceiling Suspended Type

    Printed Circuit Board Connector Wiring Diagram SiAU18-715 1.11 Ceiling Suspended Type Connectors PCB(1) : Control PCB [A1P] Connector for Terminal Strip (for Wired Remote Controller) X14A Connector for Limit Switch (for Swing Flap) X15A Connector for Drain Pump (Optional Accessory) X17A Connector for Heat Exchanger Thermistor (2) X18A...
  • Page 76 SiAU18-715 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) : Control PCB (A1P) (indoor unit) Capacity setting adaptor X19A X18A X40A X15A X14A X17A X61A X35A X60A X33A (Service monitor LED) X24A X26A X29A X27A X20A X25A 2P095007 Printed Circuit Board Connector Wiring Diagram...
  • Page 77 Printed Circuit Board Connector Wiring Diagram SiAU18-715 PCB Detail PCB(2): Signal Receiver PCB (A3P) 3P156326 PCB(3): Display PCB (A4P) LED1 LED2 LED4 LED3 3PA58761 Printed Circuit Board Connector Wiring Diagram...

  • Page 78: Part 4 Refrigerant Circuit

    SiAU18-715 Part 4 Refrigerant Circuit Refrigerant Circuit .................66 Outdoor Units ..................66 1.2 BP Units ....................68 2. Functional Parts Layout ................69 2.1 Outdoor Units ..................69 Refrigerant Flow for Each Operation Mode...........70 3.1 Cooling Operation ..................70 3.2 Heating Operation ..................71 3.3 Cooling Oil Return Operation ..............72 3.4 Heating Oil Return Operation &...

  • Page 79: Refrigerant Circuit

    Refrigerant Circuit SiAU18-715 Refrigerant Circuit Outdoor Units No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using Inverter compressor (INV) the inverter. 31 steps Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Inverter fan speed by using the inverter.
  • Page 80 SiAU18-715 Refrigerant Circuit Refrigerant Circuit Diagram C : 3D052627A Refrigerant Circuit...

  • Page 81: Bp Units

    Refrigerant Circuit SiAU18-715 BP Units No. in refrigerant Symbol Name Major Function system diagram Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of operating room is called (for operating room) EVU. Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of stopping room is called (for stopping room) EVT.

  • Page 82: Functional Parts Layout

    SiAU18-715 Functional Parts Layout 2. Functional Parts Layout Outdoor Units Birds-eye view THERMISTOR (SUCTION 2) (MARKING COLOR:GREEN) S1PH PRESSURE SWITCH (Q0524) Refrigerant Circuit...

  • Page 83: Refrigerant Flow For Each Operation Mode

    Refrigerant Flow for Each Operation Mode SiAU18-715 Refrigerant Flow for Each Operation Mode Cooling Operation Refrigerant Circuit...

  • Page 84: Heating Operation

    SiAU18-715 Refrigerant Flow for Each Operation Mode Heating Operation Refrigerant Circuit...

  • Page 85: Cooling Oil Return Operation

    Refrigerant Flow for Each Operation Mode SiAU18-715 Cooling Oil Return Operation Refrigerant Circuit...

  • Page 86: Heating Oil Return Operation & Defrost Operation

    SiAU18-715 Refrigerant Flow for Each Operation Mode Heating Oil Return Operation & Defrost Operation Refrigerant Circuit...
  • Page 87 Refrigerant Flow for Each Operation Mode SiAU18-715 Refrigerant Circuit...

  • Page 88: Part 5 Function

    SiAU18-715 Part 5 Function 1. Operation Mode ..................76 2. Basic Control..................77 2.1 Normal Operation ...................77 2.2 Compressor PI Control................78 2.3 Electronic Expansion Valve PI Control...........81 2.4 Cooling Operation Fan Control...............82 3. Special Control..................83 3.1 Startup Control ..................83 3.2 Oil Return Operation ................84 3.3 Defrosting Operation ................86 3.4 Pump-down Residual Operation ............87 3.5 Restart Standby..................87...

  • Page 89: Operation Mode

    Operation Mode SiAU18-715 Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF Startup control Pump-down •...

  • Page 90: Basic Control

    SiAU18-715 Basic Control Basic Control Normal Operation Cooling Operation Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control. ...

  • Page 91: Compressor Pi Control

    Basic Control SiAU18-715 Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to Te : Low pressure equivalent saturation achieve target value (TeS).
  • Page 92 SiAU18-715 Basic Control ∆D Control Receiving the capacity request signal from the indoor unit, the outdoor unit corrects its target pressure for capacity control. Controls ∆ D signal from indoor unit as follows. UP control : When the UP command come from more than one indoor unit among thermostat-ON indoor units.
  • Page 93 Basic Control SiAU18-715 Heating Operation TcS = TcS initial value + KTc2 KTc2 : Correction value by ∆ D signal in heating. KTc2 = 0 (without correction) During compressor frequency PI Not during compressor frequency PI control (KTc2 = 0) control ∆...

  • Page 94: Electronic Expansion Valve Pi Control

    SiAU18-715 Basic Control Electronic Expansion Valve PI Control Main Electronic Expansion Valve EV1 Control Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).

  • Page 95: Cooling Operation Fan Control

    Basic Control SiAU18-715 Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan. Furthermore, when outdoor temperature ≥ 20°C, the compressor will run in Step 7 or higher. When outdoor temperature ≥...

  • Page 96: Special Control

    SiAU18-715 Special Control Special Control Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.

  • Page 97: Oil Return Operation

    Special Control SiAU18-715 Oil Return Operation Oil flown from the compressor to the side of system is collected by oil-returning operation, in case of that oil in the compressor runs down. 3.2.1 Oil Return Operation in Cooling Operation [Conditions to start] The cooling oil-returning operation is started referring following conditions.
  • Page 98 SiAU18-715 Special Control 3.2.2 Oil Return Operation in Heating Operation [Conditions to start] The heating oil-returning operation is started referring following conditions. Integrated amount of displaced oil Timer (After the power is turned on, integrated operating-time is 2 hours and subsequently every 8 hours.) In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor load.

  • Page 99: Defrosting Operation

    Special Control SiAU18-715 Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrost operation is started referring following conditions. Outdoor heat exchanger heat transfer co-efficiency Temperature of heat-exchange (Tb) Low pressure equivalent saturation temperature (Te) Timer (2 hours at the minimum)

  • Page 100: Pump-Down Residual Operation

    SiAU18-715 Special Control Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heat- exchanger when the compressor is down.

  • Page 101: Stopping Operation

    Special Control SiAU18-715 Stopping Operation Operation of the actuator when the system is down, is cleared up. 3.6.1 When System is in Stop Mode Actuator Operation Compressor Outdoor unit fan Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV3) 0 pls...

  • Page 102: Protection Control

    SiAU18-715 Protection Control 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] Pc>3.47MPa High pressure not limited...

  • Page 103: Low Pressure Protection Control

    Protection Control SiAU18-715 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] Low pressure not limited Pe: LP pressure sensor detection value Pe<0.25MPa Pe>0.39MPa Low pressure Hot gas SVP = OFF limited Pe<0.15MPa...

  • Page 104: Discharge Pipe Protection Control

    SiAU18-715 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. [INV compressor] Discharge pipe protection HTdi :Value of INV compressor discharge pipe control not limited temperature (Tdi) compensated with outdoor air temperature...

  • Page 105: Inverter Protection Control

    Protection Control SiAU18-715 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. [Inverter overcurrent protection control] Not limited •Inverter current ≤ 23.8A &...

  • Page 106: Freeze-Up Protection Control

    SiAU18-715 Protection Control Freeze-up Protection Control Outline According to the freeze prevention status sent from the BP unit. The compressor output frequency is regulated to decrease the compressor capacity in order to prevent the indoor heat exchanger from freezing. Detail Zones are produced based on the freeze prevention status signal sent from the BP unit (Indoor unit), and the freeze prevention control prevents freezing of the indoor unit.

  • Page 107: Dew Condensation Prevention Control

    Protection Control SiAU18-715 Dew Condensation Prevention Control Outline According to the dew condensation prevention status sent from the BP unit. The compressor output frequency is regulated to decrease the compressor capacity in order to prevent the indoor unit from dew condensation. Detail Zones are produced based on the dew condensation prevention status signal sent from the BP unit (Indoor unit), and the dew condensation prevention control prevents dew condensation of...

  • Page 108: Other Control

    SiAU18-715 Other Control 5. Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adaptor is required.

  • Page 109: Bp Unit Control

    BP Unit Control SiAU18-715 BP Unit Control BP Unit Command Conversion 1. ∆ D (room temperature − temperature setting) signals from BP units are converted to capacity up / down signal. ∆ D signals from BP units are used as the capacity up / down signal in frequency commands (excludes when Powerful function is in operation).

  • Page 110: Bp Unit Electronic Expansion Valve Control

    SiAU18-715 BP Unit Control BP Unit Electronic Expansion Valve Control Purpose of the This function provides instructions regarding the absolute flow rate, relative flow rate and fully closing from the outdoor unit to the BP unit in order to ensure outdoor unit compressor safety Function and optimum refrigerating cycle of the system.
  • Page 111 BP Unit Control SiAU18-715 6.2.3 Full Closing of Electronic Expansion Valves Purpose of the The electronic expansion valves are initialized when the power is turned on. Function Details The following processes are conducted. 1. Conducts P1 pulses close when power is turned on, and sets current opening to 0 pulse (fully closing process).

  • Page 112: Sh Control In Cooling Operation

    SiAU18-715 BP Unit Control SH Control in Cooling Operation Purpose of the This function ensures appropriate refrigerant distribution when many room units are operating in the cooling mode. Function Outline The heat exchanger temperatures and gas pipe temperatures of operating room units are detected by the gas pipe thermistors, and the electronic expansion valves' flow rates are corrected so as to adjust the difference between heat exchanger temperature and gas pipe temperature of each room unit (hereafter referred to as SH) close to the target values.

  • Page 113: Sc Control In Heating Operation

    BP Unit Control SiAU18-715 Note: 1. In Sky Air models, the indoor units are equipped with distribution capillary tubes; therefore, the heat exchangers may superheat even when the condition is met. 2. In Sky Air models, the heat exchanger intermediate position is provided on the liquid connection pipe side;...

  • Page 114: Indoor Unit (Ra Models)

    SiAU18-715 Indoor Unit (RA Models) Indoor Unit (RA Models) Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.

  • Page 115: Fan Speed Control For Indoor Units

    Indoor Unit (RA Models) SiAU18-715 Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control.

  • Page 116: Programme Dry Function

    SiAU18-715 Indoor Unit (RA Models) Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of The microcomputer automatically sets the temperature and fan settings.

  • Page 117: Automatic Operation

    Indoor Unit (RA Models) SiAU18-715 Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.

  • Page 118: Thermostat Control

    SiAU18-715 Indoor Unit (RA Models) Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.

  • Page 119: Night Set Mode

    Indoor Unit (RA Models) SiAU18-715 Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first Circuit one hour, then automatically raises the temperature setting slightly in the case of cooling, or lowers it slightly in the case of heating, for economical operations.

  • Page 120: Econo Mode

    SiAU18-715 Indoor Unit (RA Models) ECONO Mode Outline FTK(X)S20D, FTK(X)S25/35E The "ECONO mode" reduces the maximum operating current and power consumption by approx. 30% during start up etc.. This mode is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.

  • Page 121: Intelligent Eye (Wall Mounted Type Only)

    Indoor Unit (RA Models) SiAU18-715 INTELLIGENT EYE (Wall Mounted Type Only) This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity.
  • Page 122 SiAU18-715 Indoor Unit (RA Models) Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.

  • Page 123: Home Leave Operation

    Indoor Unit (RA Models) SiAU18-715 7.10 HOME LEAVE Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided.

  • Page 124: Inverter Powerful Operation

    SiAU18-715 Indoor Unit (RA Models) 7.11 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the When POWERFUL button is pushed in each operation mode, the fan speed / setting temperature will be converted to the following states in a period of 20 minutes.

  • Page 125: 7.12 Other Functions

    Indoor Unit (RA Models) SiAU18-715 7.12 Other Functions 7.12.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.
  • Page 126 SiAU18-715 Indoor Unit (RA Models) 7.12.4 Titanium Apatite Photocatalytic Air-Purifying Filter For FTK(X)S20D, FTK(X)S25/35E, FTK(X)S50-71F, FDXS25-60C, FVXS25-50F This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter in a single highly effective unit. The filter traps microscopic particles, decompose odours and even deactivates bacteria and viruses.

  • Page 127: Indoor Unit (Skyair Models)

    Indoor Unit (SkyAir Models) SiAU18-715 8. Indoor Unit (SkyAir Models) Function Outline FFQ-B, FCQ-B FBQ-B, FHQ-B (Input) (Output) Indoor Unit Thermostat Control Two thermostats used, suction Suction Sensor(R1T) and remote controller. Fan Motor Monitoring Function Drain Pump Heat Exchanger Sensor Cool/Heat Automatic Optional for FHQ (R2T)

  • Page 128: Electric Function Parts

    SiAU18-715 Indoor Unit (SkyAir Models) Electric Function Parts FFQ – B Capacity Remarks Wired remote controller BRC1C61 Optional Accessory Wireless remote Heat pump BRC7E530W Optional controller Accessory Cooling only BRC7E531W Electronic control unit [2P095006-2] EC0226 Fan motor [3P104408-1] 4P 55W Fan motor capacitor 4µF [440VAC] Float switch...

  • Page 129: Function Details

    Indoor Unit (SkyAir Models) SiAU18-715 Function Details Thermostat Control Freeze-up The thermostat turns OFF under the following temperature conditions to prevent freezing of the indoor unit heat exchanger. Protection The motorized valve is controlled to maintain the indoor unit heat exchanger temperature Control (Te) above 0°C.
  • Page 130 SiAU18-715 Indoor Unit (SkyAir Models) Condensation Avoidance Continuous 30 minutes operation of cooling One hour drying Control (FHQ Only) After continuous 30 minutes of operation with downward The unit operation can be reset with changing operation horizontal blade position, change the blade position to mode into "heating"...
  • Page 131 Indoor Unit (SkyAir Models) SiAU18-715 1-2 Operations when an occurrence of water level abnormality 1-2-a) Behavior between occurrence and recovery of water level abnormality After compressor stops due to water level abnormality, drain pump is operated intermittently, i.e. 5 min ON, 5 sec OFF and 5 min ON.
  • Page 132 SiAU18-715 Indoor Unit (SkyAir Models) 2. Heating 2-1 Basic operation In heating operation of the unit equipped with a humidifier, when "Interlocking of drain pump / humidifier" (15(25)-3) is set to "yes" (02), the drain pump operates 20-min OFF and 3-min ON repeatedly during compressor is in operation.
  • Page 133 Indoor Unit (SkyAir Models) SiAU18-715 2-2-a)-2 When a water level abnormality occurs during drain pump OFF The abnormality is determined when 80 seconds elapse from compressor stop. Other than above, behavior is same as 2-2-a). Occurrence of drain water level abnormality Intermittent operation (*1) 5min 5min...
  • Page 134 SiAU18-715 Indoor Unit (SkyAir Models) Using Conditions Remote controller thermostat is equipped only in wired remote controller. Even when “use remote controller thermostat” is selected in service mode, the remote controller Remote thermostat may not be used. Controller < Conditions not to use > Thermostat 1.
  • Page 135 Indoor Unit (SkyAir Models) SiAU18-715 Program Dry The points of thermostat ON or OFF are determined according to the suction air temperature at the startup of unit operation. Operation The set temperature and flow rate are not displayed on remote controller. Function Operation startup Thermostat...
  • Page 136 SiAU18-715 Indoor Unit (SkyAir Models) Fan and Flap Operations Flap Remote Controller FHQ, FFQ, Indication Heating Hot Start from Defrost In Swing Horizontal Swing Operation Operation In Airflow Horizontal Set Position Direction Setting Defrost In Swing Horizontal Swing Operation In Airflow Horizontal Set Position Direction Setting...
  • Page 137 Indoor Unit (SkyAir Models) SiAU18-715 Mode Conflict [Overview] While the indoor unit for another room and the outdoor unit are operating, when the indoor unit for the own room is activated, the operation mode which can be selected in the own room has some restrictions as mentioned below.
  • Page 138 SiAU18-715 Indoor Unit (SkyAir Models) Non-operating [Overview] After operating an indoor unit for the own room in the cooling mode or dry mode, stop the unit Room using the remote controller. Under the condition, when an unit for another room is started Prevention Fan operation in the heating mode, the fan in the own room may rotate in the LL mode even though Control...
  • Page 139 Indoor Unit (SkyAir Models) SiAU18-715 Function...

  • Page 140: Part 6 Test Operation

    SiAU18-715 Part 6 Test Operation Test Operation ..................128 Procedure and Outline .................128 Outdoor Unit PCB Layout..............133 3. Field Setting ..................134 Field Setting from Outdoor Unit............134 3.2 Detail of Setting Mode ................143 Field Setting for SkyAir Indoor Unit .............152 4.1 Explanation...................152 Field Setting ..................153 Initial Setting Contents .................154...

  • Page 141: Test Operation

    Test Operation SiAU18-715 Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check work prior to turn power supply on Is the power supply single-phase 220-230V / 50Hz? Check the below items. Have you finished a ductwork to drain? 2Power wiring Have you detach transport fitting?
  • Page 142 SiAU18-715 Test Operation 1.1.3 Judging and reprogramming in case of redundant BP addresses The BP unit of this system is provided with specific addresses in its production stage. These addresses are used to conduct various controls. If by any chance (on 3 out of 260000 units) these addresses are redundant, the system may get in trouble.
  • Page 143 Test Operation SiAU18-715 Example of DIP switch (DS2) settings on the BP unit's PCB DS2-1 DS2-2 DS2-3 DS2-4 BP unit 1 BP unit 2 BP unit 3 DS1~4 : Factory setting is OFF. The BP unit 1 through 3 show the first through third unit, respectively. The order of these units is flexible.
  • Page 144 SiAU18-715 Test Operation 1.1.7 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) Press and hold the TEST ...
  • Page 145 Test Operation SiAU18-715 1.1.8 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 30°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...

  • Page 146: Outdoor Unit Pcb Layout

    SiAU18-715 Outdoor Unit PCB Layout Outdoor Unit PCB Layout Outdoor Unit PCB Caution Cover electric parts with an insulating sheet during inspection to prevent electric shock. Test Operation...

  • Page 147: Field Setting

    Field Setting SiAU18-715 3. Field Setting Field Setting from Outdoor Unit 3.1.1 Setting by Dip Switches The following field settings are made by dip switches on PC board. Dipswitch Setting item Description Setting Cool / Heat Used to set cool / heat change over setting by remote DS1-1 change over controller equipped with outdoor unit.
  • Page 148 SiAU18-715 Field Setting Caution DIP switch Setting after changing the main PCB(A1P) to spare parts PCB When you change the main PCB(A1P) to spare parts PCB, please carry out the following setting. Please Attach the Capacity Setting Adapter corresponding to Capacity Class (ex. 112, 140, 160) in connector X51A. (See Below) Capacity Setting Adapter Capacity Class...
  • Page 149 Field Setting SiAU18-715 Setting by pushbutton switches The following settings are made by pushbutton switches on PCB. LED indication (Factory setting) MODE RETURN TEST RESET (V2760) There are the following three setting modes. Setting mode 1 (H1P off) Initial status (when normal) : Also indicates during “abnormal”. Setting mode 2 (H1P on) Used to modify the operating status and to set program addresses, etc.
  • Page 150 SiAU18-715 Field Setting 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 set).
  • Page 151 Field Setting SiAU18-715 b. “Setting mode 2” Setting item Description Cool/heat unified Sets address for cool/heat unified operation. Push and hold the MODE (BS1) address button for 5 seconds and set to Low noise/demand Address for low noise/demand operation “Setting mode 2”. address Used to conduct test operation without making changes Test operation...
  • Page 152 SiAU18-715 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777777 ∗ Address Binary number 8777778 Cool / Heat Unified address (6 digits) 8788888 8777777 ∗ Address 8777778 Binary number Low noise/demand address...
  • Page 153 Field Setting SiAU18-715 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set Level 1 (outdoor fan with 8 step or lower) 8777778 8777787 ∗ 25 Low noise setting Level 2 (outdoor fan with 7 step or lower) Level 3 (outdoor fan with 6 step or lower) 8777877 About 20:00...
  • Page 154 SiAU18-715 Field Setting c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the 9 7 7 7 7 7 7 Various setting See below MODE (BS1) button when in “Setting mode 1”. 9 7 7 7 7 7 8 C/H unified address 9 7 7 7 7 8 7 Low noise/demand address...
  • Page 155 Field Setting SiAU18-715 Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting. ★ Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.

  • Page 156: Detail Of Setting Mode

    SiAU18-715 Field Setting Detail of Setting Mode 3.2.1 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 switching remote controller.
  • Page 157 Field Setting SiAU18-715 Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PC board DS1-1 to OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1”...
  • Page 158 SiAU18-715 Field Setting 3.2.2 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adapter (optional), you can lower operating noise by 2-3 dB. When the low noise operation is carried out automatically at night (The external control adapter for outdoor unit is not required) 1.
  • Page 159 Field Setting SiAU18-715 Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adapter (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Set item Condition Content Demand...
  • Page 160 SiAU18-715 Field Setting 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 off. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.
  • Page 161 Field Setting SiAU18-715 : ON : OFF : Blink Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P External low noise / (Factory...
  • Page 162 SiAU18-715 Field Setting 3.2.3 Setting of Refrigerant Additional Charging Operation Refrigerant additional charging operation procedure e, make sure When the outdoor unit is stopped and the entire quantity of refrigerant cannot be charged from the stop valve on the liquid sid to charge the remaining quantity of refrigerant using this procedure.
  • Page 163 Field Setting SiAU18-715 3.2.4 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of indoor and outdoor units All indoor and outdoor unit’s operation are prohibited. Operation In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” to ON.
  • Page 164 SiAU18-715 Field Setting 3.2.6 Check Operation To prevent any trouble in the period of installation at site, the system is provided with a test operation mode enabling check for incorrect wiring, stop valve left in closed, coming out (or misplacing with suction pipe thermistor) of discharge pipe thermistor and judgment of piping length, refrigerant overcharging, and learning for the minimum opening degree of electronic expansion valve.

  • Page 165: Field Setting For Skyair Indoor Unit

    Field Setting for SkyAir Indoor Unit SiAU18-715 4. Field Setting for SkyAir Indoor Unit Explanation Field set is carried out from the remote controller. At time of installation, or after maintenance inspection/repair, carry out field set according to the explanation below. Incorrect settings will cause a malfunction to occur.

  • Page 166: Field Setting

    SiAU18-715 Field Setting for SkyAir Indoor Unit Field Setting 4.2.1 Wired Remote Controller Note: (Field setting must be made from the remote controller in accordance with the installation conditions.) Setting can be made by changing the “Mode number”, “FIRST CODE NO.”, and “SECOND CODE NO.”.

  • Page 167: Initial Setting Contents

    Field Setting for SkyAir Indoor Unit SiAU18-715 4.2.2 Wireless Remote Controller Note: If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual (optional hand book) for each optional accessory. Procedure 1.

  • Page 168: Local Setting Mode Number

    SiAU18-715 Field Setting for SkyAir Indoor Unit Local Setting Mode Number Example To set the filter sign time to “filter contamination - heavy” for all units in a group: Set mode No. to “10,” setting switch No. to “0,” and setting position No. to “02.” Table Mode Setting...

  • Page 169: Detailed Explanation Of Setting Modes

    Field Setting for SkyAir Indoor Unit SiAU18-715 Detailed Explanation of Setting Modes 4.5.1 Air Flow Direction Setting (FFQ, FCQ) Set the air flow direction of indoor units as given in the table below. (Set when optional air outlet blocking pad has been installed.) The second code No. is factory set to “01.” Setting Table Mode No.
  • Page 170 SiAU18-715 Field Setting for SkyAir Indoor Unit 4.5.5 Fan Speed Changeover When Thermostat is OFF By setting to “Set Fan Speed,” you can switch the fan speed to the set fan speed when the heating thermostat is OFF. ∗ Since there is concern about draft if using “fan speed up when thermostat is OFF,” you should take the setup location into consideration.
  • Page 171 Field Setting for SkyAir Indoor Unit SiAU18-715 Address Setting <Setting from the remote controller> 1. Hold down the “ ” button and the “ ” button for at least 4 seconds, to get (It is Factory Set the FIELD SET MODE. (Indicated in the display area in the figure at below). to “1”) 2.
  • Page 172 SiAU18-715 Field Setting for SkyAir Indoor Unit After Setting Stick the Unit No. label at decoration panel air discharge outlet as well as on the back of the wireless remote controller. Wireless remote controller Unit No. label Decoration panel PRECAUTIONS Set the Unit No.

  • Page 173: Centralized Group No. Setting

    Field Setting for SkyAir Indoor Unit SiAU18-715 Centralized Group No. Setting If carrying out centralized control with a central remote controller and unified ON/OFF controller, you have to set the group No. for each group by remote controller. To set the group No., first turn on the power supply of the central remote controller, unified ON/OFF controller and indoor unit.

  • Page 174: Maintenance Mode Setting

    SiAU18-715 Field Setting for SkyAir Indoor Unit Maintenance Mode Setting Procedure 1. Enter the field set mode. Continue to push the inspection / test operation button for a minimum of 4 seconds. 2. Enter the maintenance mode. After having entered the field set mode, continue to push the inspection / test operation button for a minimum of 4 seconds.

  • Page 175: Test Operation And Field Setting For Ra Indoor Unit

    Test Operation and Field Setting for RA Indoor Unit SiAU18-715 5. Test Operation and Field Setting for RA Indoor Unit Test Operation from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature.

  • Page 176: Jumper Settings

    SiAU18-715 Test Operation and Field Setting for RA Indoor Unit Jumper Settings 5.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the electrical box.
  • Page 177 Test Operation and Field Setting for RA Indoor Unit SiAU18-715 Test Operation...

  • Page 178: Part 7 Operation Manual

    SiAU18-715 Part 7 Operation Manual 1. System Configuration................166 1.1 Operation Instructions ................166 2. Instruction....................167 2.1 RMK(X)S Series ...................167 2.2 Wall Mounted, Duct, Floor/Ceiling Type..........168 2.3 FVXS Series..................224 2.4 Ceiling Mounted Cassette Type ............254 2.5 Ceiling Mounted Built-in Type ..............276 2.6 Ceiling Suspended Type ..............286 Operation Manual...

  • Page 179: System Configuration

    System Configuration SiAU18-715 1. System Configuration Operation Instructions After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.

  • Page 180: Instruction

    SiAU18-715 Instruction 2. Instruction RMK(X)S Series REGARDING USE Super Multi Plus System air conditioner POINTS THE CUSTOMER SHOULD BE AWARE OF COMFORT At startup After the power is initially turned on, it will take approx. 10 minutes until startup. Usually the unit will start •...

  • Page 181: Wall Mounted, Duct, Floor/Ceiling Type

    Instruction SiAU18-715 Wall Mounted, Duct, Floor/Ceiling Type 2.2.1 Manual Contents and Reference Page Wall Mounted Type Model Series FTK(X)S20D FTK(X)S50/60/71F FTK(X)S25/35E Read before Operation Safety Precautions Names of Parts Preparation before Operation ★ 1 Operation AUTO, DRY, COOL, HEAT, FAN Operation ★...
  • Page 182 • Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.
  • Page 183 Instruction SiAU18-715 • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip.
  • Page 184 SiAU18-715 Instruction 2.2.3 Names of Parts FTK(X)S 20 D, FTK(X)S 25/35 E Names of parts Indoor Unit ON/OFF Operation Manual...
  • Page 185 Instruction SiAU18-715 Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Push once again to stop it. Air-Purifying Filter: • The operation mode refers to the following •...
  • Page 186 SiAU18-715 Instruction Remote Controller ECONO ON/OFF TEMP POWERFUL MODE SWING MOLD PROOF SENSOR CANCEL TIMER < > ARC433B46, B47 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 9. FAN setting button: 2.
  • Page 187 Instruction SiAU18-715 FTK(X)S 50/60/71 F Names of parts Indoor Unit Operation Manual...
  • Page 188 SiAU18-715 Instruction Outdoor Unit 50/60 class 71 class Indoor Unit 1. Air filter 14. HOME LEAVE lamp (red): • Lights up when you use HOME LEAVE 2. Titanium Apatite Photocatalytic Operation. (page 16.) Air-Purifying Filter 15. Indoor Unit ON/OFF switch: 3.
  • Page 189 Instruction SiAU18-715 ■ Remote Controller QUIET CANCEL TIMER < > ARC433B70, B71 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 9. FAN setting button: 2. Display: • It selects the air flow rate setting. •...
  • Page 190 SiAU18-715 Instruction CDKS 25/35/50/60 C, FDXS 25/35/50/60 C, CDK(X)S 25/35 E Names of parts Indoor Unit Operation Manual...
  • Page 191 Instruction SiAU18-715 Outdoor Unit Indoor Unit 1. Air outlet 10. Indoor Unit ON/OFF switch: • Push this switch once to start operation. 2. Air outlet grille: (Field supply) Push once again to stop it. • Appearance of the Air outlet grille and Air inlet •...
  • Page 192 SiAU18-715 Instruction Remote Controller 〈 ARC433B69, B76 〉 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) 2. Display: • It displays the current settings. 8. QUIET button: OUTDOOR UNIT (In this illustration, each section is shown QUIET operation with all its displays ON for the purpose of...
  • Page 193 Instruction SiAU18-715 FLXS 25/35/50/60 B Names of parts Indoor Unit The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this man- ual show the case when installation is being carried out to the ceiling. (The methods of operation used are the same when installing to a wall.) Opening the front grille How to open the front grille :...
  • Page 194 SiAU18-715 Instruction Outdoor Unit Indoor Unit 1. Louvers (vertical blades): 13. Indoor unit ON/OFF switch: The louvers are inside of the air outlet. • Push this switch once to start operation. 2. Air outlet Push once again to stop it. •...
  • Page 195 Instruction SiAU18-715 Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING QUIET CANCEL TIMER < > ARC433B67 1. Signal Transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) 2. Display: •...
  • Page 196 SiAU18-715 Instruction 2.2.4 Preparation Before Operation Preparation Before Operation To set the batteries Position + and – correctly! 1. Press with a finger and slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
  • Page 197 Instruction SiAU18-715 Preparation Before Operation To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control- ler, such as a curtain, the unit will not operate. •...
  • Page 198 SiAU18-715 Instruction To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. ECONO ON/OFF Holding down “ ” or “ ” button rap- TEMP POWERFUL idly increases or decreases the time dis- play.
  • Page 199 Instruction SiAU18-715 2.2.5 AUTO · DRY · COOL · HEAT · FAN Operation OPERATION AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 200 SiAU18-715 Instruction ■ To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or HEAT or COOL or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ”...
  • Page 201 Instruction SiAU18-715 2.2.6 Adjusting the Air Flow Direction FTK(X)S 20 D, FTK(X)S 25/35 E Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. •...
  • Page 202 SiAU18-715 Instruction To adjust the vertical blades (louvres) Hold the knob and move the louvres. (You will find a knob on the left-side and the right-side blades.) • When the unit is installed in the corner of a room, the direction of the louvers should be facing away from the wall.
  • Page 203 Instruction SiAU18-715 FTK(X)S 50/60/71 F Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 204 SiAU18-715 Instruction To 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
  • Page 205 Instruction SiAU18-715 FLXS 25/35/50/60 B Adjusting the Air Flow Direction You can adjust the air flow direction to increase your com- fort. To adjust the horizontal blade (flap) 1. Press “SWING button”. • “ ” is displayed on the LCD. 2.
  • Page 206 SiAU18-715 Instruction To adjust the vertical blades (louvres) • When adjusting the louvre, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvres. (You will find a knob on the left side and the right side blades.) Notes on flap and louvres angles •...
  • Page 207 Instruction SiAU18-715 2.2.7 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity . To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used ECONO...
  • Page 208 SiAU18-715 Instruction 2.2.8 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. T his function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
  • Page 209 Instruction SiAU18-715 2.2.9 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power con- sumption value. To start ECONO operation 1. Press “ECONO button” . • “ ” is displayed on the LCD. To cancel ECONO opera- tion 2.
  • Page 210 SiAU18-715 Instruction 2.2.10 MOLD PROOF Operation MOLD PROOF Operation MOLD PROOF operation is a function which reduces the spread of mold by using Fan mode to lower the humidity inside the indoor unit. To set MOLD PROOF operation 1. Press and hold the MOLD PROOF button for two seconds.
  • Page 211 Instruction SiAU18-715 2.2.11 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. ■ To start HOME LEAVE operation 1. Press “HOME LEAVE button”. • “ ”...
  • Page 212 SiAU18-715 Instruction What’s the HOME LEAVE operation? Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate.
  • Page 213 Instruction SiAU18-715 2.2.12 INTELLIGENT EYE Operation FTK(X)S 20 D, FTK(X)S 25/35 E INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the ECONO ON/OFF...
  • Page 214 SiAU18-715 Instruction “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
  • Page 215 Instruction SiAU18-715 FTK(X)S 50/60/71 F INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. ■ To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. ■ To cancel the INTELLIGENT EYE operation 2.
  • Page 216 SiAU18-715 Instruction “INTELLIGENT EYE” is useful for Energy Saving. Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
  • Page 217 Instruction SiAU18-715 2.2.13 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER opera- tion •...
  • Page 218 SiAU18-715 Instruction To use ON TIME R operation • Check that the clock is correct. If not, set the clock to the present time 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
  • Page 219 Instruction SiAU18-715 2.2.14 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. Selecting the Operation Mode room room Outdoor unit 1. With the Priority Room Setting room room present but inactive or not present.
  • Page 220 SiAU18-715 Instruction Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations; 1. Operation Mode Priority. As the operation mode of the Priority Room takes precedence, the user can select a different operation mode from other rooms.
  • Page 221 Instruction SiAU18-715 2.2.15 Care and Cleaning FTK(X)S 20 D, FTK(X)S 25/35 E Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units ■ Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. ■...
  • Page 222 SiAU18-715 Instruction Filters 1. Open the front panel. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter. Titanium Apatite Photocatalytic •...
  • Page 223 Instruction SiAU18-715 NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 224 SiAU18-715 Instruction FTK(X)S 50/60/71 F Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, outdoor unit and remote controller 1. Wipe them with dry soft cloth. Front panel 1. Open the front panel. •...
  • Page 225 Instruction SiAU18-715 Filters 1. Open the front panel. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium tabs (3 at top) Apatite Photocatalytic Air-Purifying Filter.
  • Page 226 SiAU18-715 Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 227 Instruction SiAU18-715 CDKS 25/35/50/60 C, FDXS 25/35/50/60 C Care and Cleaning • Only a qualified service person is allowed to CAUTION perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. Cleaning the air filter. 1.Removing the air filter.
  • Page 228 • Clean the drain pan periodically, or drain piping may be clogged with dust and may result in water leakage. Ask your DAIKIN dealer to clean them. • Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan, if there is a great deal of dust present.
  • Page 229 Instruction SiAU18-715 CDK(X)S 25/35 E Care and Cleaning • Only a qualified service person is allowed to CAUTION perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. Cleaning the air filter 1.Removing the air filter. •...
  • Page 230 • The suction grille is option. • Do not use water or air of 50°C or higher for cleaning air filters and outside panels. • Ask your DAIKIN dealer how to clean it. Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.
  • Page 231 Instruction SiAU18-715 FLXS 25/35/50/60 B Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 232 SiAU18-715 Instruction Filters 1. Open the front grille. 2. Pull out the air filters. • Push upwards the tab at the center of each air fil- ter, then pull it down. 3. Take off the air purifying filter, photocatalytic deodorizing filter. •...
  • Page 233 Instruction SiAU18-715 Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...
  • Page 234 SiAU18-715 Instruction 2.2.16 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...
  • Page 235 Instruction SiAU18-715 Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off.) •...
  • Page 236 SiAU18-715 Instruction Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.

  • Page 237: Fvxs Series

    • Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.
  • Page 238 SiAU18-715 Instruction • Do not place appliances which produce open fire in places exposed to the air flow from the unit or under the indoor unit. It may cause incomplete combustion or deformation of the unit due to the heat. •...
  • Page 239 Instruction SiAU18-715 2.3.2 Names of Parts Names of parts Indoor Unit Opening the Front Panel How to open the front panel: (page 26.) Air outlet selection switch • This setting blows air from upper outlet only. This setting automatically decides a blow •...
  • Page 240 SiAU18-715 Instruction Outdoor Unit Indoor Unit 1. Titanium Apatite Photocatalytic • The operation mode refers to the following Air-Purifying Filter: table. • These filters are attached to the inside of Temperature Mode Air flow rate the air filters. setting 2. Air outlet 22˚C COOL AUTO...
  • Page 241 Instruction SiAU18-715 Remote Controller <Open the lid> <ARC452A2> 1. Signal transmitter: 9. ECONO button: • It sends signals to the indoor unit. ECONO operation (page 16.) 2. Display: 10. SWING button: • It displays the current settings. • Adjusting the Air Flow Direction (page 12.) (In this illustration, each section is shown 11.
  • Page 242 SiAU18-715 Instruction 2.3.3 Preparation Before Operation Preparation Before Operation To set the batteries 1. Slide the front cover to take it off. Position correctly! 2. Set two dry batteries (LR03·AAA). 3. Set the front cover as before. To operate the remote controller •...
  • Page 243 Instruction SiAU18-715 Preparation Before Operation To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “SELECT button” to set the current day of the week. 3. Press “CLOCK button”. blinks. 4. Press “SELECT button” to set the clock to the present time. Holding down “...
  • Page 244 SiAU18-715 Instruction Turn the breaker ON • Turning ON the breaker closes the flap. (This is a normal procedure.) NOTE Tips for saving energy • Be careful not to cool (heat) the room too much. Keeping the temperature setting at a moderate level helps save energy. Recommended temperature setting •...
  • Page 245 Instruction SiAU18-715 2.3.4 AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 246 SiAU18-715 Instruction To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...
  • Page 247 Instruction SiAU18-715 2.3.5 Adjusting the Air Flow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 248 SiAU18-715 Instruction Air flow selection • Make air flow selection according to what suits you. When setting the air flow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...
  • Page 249 Instruction SiAU18-715 2.3.6 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.
  • Page 250 SiAU18-715 Instruction OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
  • Page 251 Instruction SiAU18-715 2.3.7 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value. To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. To cancel ECONO operation 2.
  • Page 252 SiAU18-715 Instruction 2.3.8 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
  • Page 253 Instruction SiAU18-715 TIMER Operation To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. (page 8.) 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “SELECT button” until the time setting reaches the point you like.
  • Page 254 SiAU18-715 Instruction 2.3.9 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. To use WEEKLY TIMER operation • Make sure the day of the week and time are set. If not, set the day of the week and time.
  • Page 255 Instruction SiAU18-715 WEEKLY TIMER Operation 7. Press “NEXT button”. • The time will be set. • “ ” and the temperature blink. 8. Press “SELECT button” to select the desired temperature. • The temperature can be set between 10˚C and 32˚C. •...
  • Page 256 SiAU18-715 Instruction ■ To cancel WEEKLY TIMER operation 11.Press “WEEKLY button” to deactivate the WEEKLY operation. • The “ ” will disappear from the display. • The TIMER lamp goes off. • To reactivate the WEEKLY TIMER operation, press the “WEEKLY button” again.
  • Page 257 Instruction SiAU18-715 WEEKLY TIMER Operation ■ Confirming a reservation • The reservation can be confirmed. 1. Press “ button”. • The day of the week and the reservation number of the current day will be displayed. 2. Press “SELECT button” to select the day of the week and the reservation number to be confirmed.
  • Page 258 SiAU18-715 Instruction ■ Setting WEEKLY TIMER using copy mode • A reservation made once can be easily copied and the same settings used for another day of the week. 1. Press “ button”. 2. Press “SELECT button” to confirm the day of the week to be copied. 3.
  • Page 259 Instruction SiAU18-715 2.3.10 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. room room Outdoor unit room room ■ Selecting the operation mode Living Living room...
  • Page 260 SiAU18-715 Instruction ■ Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations; 1. Operation mode Priority. As the operation mode of the Priority Room takes precedence, the user can select a different operation mode from other rooms.
  • Page 261 Instruction SiAU18-715 2.3.11 Care and Cleaning Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1.
  • Page 262 SiAU18-715 Instruction Filters 1. Open the front panel. (page 26.) 2. Remove the air filter. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter. •...
  • Page 263 Instruction SiAU18-715 NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 264 SiAU18-715 Instruction 2.3.12 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...
  • Page 265 Instruction SiAU18-715 Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off.) •...
  • Page 266 SiAU18-715 Instruction Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.

  • Page 267: Ceiling Mounted Cassette Type

    Instruction SiAU18-715 Ceiling Mounted Cassette Type 2.4.1 FFQ 25/35/50/60 B TEST AVAILABLE TEST Operation Manual...
  • Page 268 (In case of group control system, one group of indoor units) The unit is individually operated. Outdoor unit NOTE • Contact your Daikin dealer in case of changing Unit with Unit with the combination or setting of group control and remote remote two remote controllers control system.
  • Page 269 Instruction SiAU18-715 the level of limiting concentration, an oxygen defi- 2. SAFETY CONSIDERATIONS ciency accident may happen. For installation of separately sold component We recommend that you read this instruction man- parts, ask a specialist. ual carefully before use to gain full advantage of the Be sure to use the separately sold component function of the air conditioner, and to avoid malfunc- parts designated by our company.
  • Page 270 SiAU18-715 Instruction DB: Dry bulb temperature (˚C) Do not expose animals and plants directly to the wind from the air conditioner. WB: Wet bulb temperature (˚C) Adverse influence to animals and plants may The setting temperature range of the remote con- ˚...
  • Page 271 • Operating procedure varies with heat pump type DISPLAY “ ” (AIR FLOW FLAP) and cooling only type. Contact your Daikin dealer Refer to “AIR FLOW DIRECTION ADJUST”. to confirm your system type. • To protect the unit, turn on the main power switch 6 hours before operation.
  • Page 272 • The heating capacity of the air conditioner • The movable limit of the flap is changeable. declines as the outside air temperature falls. Contact your Daikin dealer for details. In such a case, use the air conditioner in combi- nation with other heating systems.
  • Page 273 Instruction SiAU18-715 Press the AIR FLOW DIRECTION ADJUST button to select the air direction as following. PROGRAMMING TIME The AIR FLOW FLAP display swings as shown left and the Press the PROGRAMMING TIME button and air flow direction continuously set the time for stopping or starting the sys- varies.
  • Page 274 SiAU18-715 Instruction • Do not place other heaters directly below the Fig. 1 indoor unit. They may deform due to the heat. • Never place objects near the air inlet and the air outlet of the unit. It may cause deterioration in the effect or stop in the operation.
  • Page 275 Instruction SiAU18-715 Directly apply the type of detergent used for 5. Shut the suction grille. Refer to item No.1. cleaning ventilation fans or ovens, wait 10 min- utes, and then rinse with water. 6. After turning on the power, press FILTER SIGN RESET button.
  • Page 276 TRALIZED CONTROL) and the unit operates room becomes uneven. It is necessary to clean in a mode different to what is shown on the the inside of the indoor unit. Ask your Daikin remote controller display. dealer for details on cleaning the unit. This oper- When using a unit in a multi system, the opera- ation requires a qualified service person.
  • Page 277 • A “Pishi-pishi” squeaking sound is heard when the system is in operation or after the stop of what the malfunction code indicates to your Daikin dealer. operation. Expansion and contraction of plastic parts II. If the system does not properly operate caused by temperature change makes this noise.
  • Page 278 SiAU18-715 Instruction 2.4.2 FCQ 35/50/60/71 B TEST AVAILABLE Operation Manual...
  • Page 279 All indoor units are equally set. If your installation has a customized control system, ask your Daikin dealer for the operation that corre- • Two remote controllers control system sponds to your system. Two remote controllers control one indoor unit (In case of group control system, one group of indoor •...
  • Page 280 SiAU18-715 Instruction For refrigerant leakage, consult your dealer. 2. SAFETY CONSIDERATIONS When the air conditioner is to be installed in a small room, it is necessary to take proper mea- We recommend that you read this instruction man- sures so that the amount of any leaked refriger- ual carefully before use to gain full advantage of the ant does not exceed the limiting concentration function of the air conditioner, and to avoid malfunc-...
  • Page 281 Instruction SiAU18-715 Never expose little children, plants or ani- 4. INSTALLATION SITE mals directly to the air flow. Adverse influence to little children, plants or Regarding places for installation animals may result. • Is the air conditioner installed at a well-venti- Do not wash the air conditioner with water.
  • Page 282 Refer to figure 1 on page [1] DISPLAY “ ” (PROGRAMMED TIME) • Operating procedure varies with heat pump type and cooling only type. Contact your Daikin dealer This display shows the PROGRAMMED TIME of the system start or stop. to confirm your system type.
  • Page 283 The movable limit of the flap is changeable. is warmed up after the start of operation. Contact your Daikin dealer for details. • An indoor fan runs to discharge a gentle wind automatically until the temperature inside the air conditioner reaches a certain level.
  • Page 284 SiAU18-715 Instruction Press the AIR FLOW DIRECTION ADJUST TIMER MODE START/STOP button to select the air direction as shown below. Press the TIMER MODE START/STOP button The AIR FLOW FLAP display several times and select the mode on the swings as shown below and display.
  • Page 285 Instruction SiAU18-715 HOW TO CLEAN THE AIR FILTER • Ventilate the room regularly. Using the unit for long periods of time requires Clean the air filter when the display shows “ ” attentive ventilation of the room. (TIME TO CLEAN AIR FILTER). •...
  • Page 286 SiAU18-715 Instruction HOW TO CLEAN THE SUCTION GRILLE NOTE 1. Open the suction grille. • Do not wash the air conditioner with hot water of Push it downward slowly while pressing the but- more than 50°C, as doing so may result in discol- tons provided on two spots.
  • Page 287 It is necessary to clean the Turn off the main power supply switch for saving inside of the indoor unit. Ask your Daikin dealer energy. for details on cleaning the unit. This operation • The display on the remote controller will vanish requires a qualified service person.
  • Page 288 MALFUNCTION Cooling effect decreases if heat gain of the CODE room is too large. Measure: Notify your Daikin dealer and inform • If the heat source of the room is excessive him/her of the display. (when cooling). Cooling effect decreases if heat gain of the room is too large.

  • Page 289: Ceiling Mounted Built-In Type

    Instruction SiAU18-715 Ceiling Mounted Built-in Type TEST AVAILABLE TEST Operation Manual...

  • Page 290: Safety Considerations

    SiAU18-715 Instruction NOTE 1. WHAT TO DO BEFORE OPERA- • Contact your Daikin dealer in case of changing TION the combination or setting of group control and two remote controllers control system. This operation manual is for the system with stan- dard control.
  • Page 291 Instruction SiAU18-715 Do not remove the air outlet of the outdoor unit. WARNING The fan may get exposed and result in injury. Avoid exposure of your body directly to the Do not place items that might be damaged by cold air for a long time, or avoid excessive water under the indoor unit.
  • Page 292 SiAU18-715 Instruction Regarding wiring 3. OPERATION RANGE • All wiring must be performed by an authorized If the temperature or the humidity is beyond the fol- electrician. lowing conditions, safety devices may work and the To do wiring, ask your dealer. Never do it by yourself. air conditioner may not operate, or sometimes, •...
  • Page 293 Refer to figure 1 on page [1] Refer to “HOW TO CLEAN THE AIR FILTER”. • Operating procedure varies with heat pump type and cooling only type. Contact your Daikin dealer DISPLAY “ ” (DEFROST) to confirm your system type.
  • Page 294 SiAU18-715 Instruction • An indoor fan runs to discharge a gentle wind COOLING, HEATING, AUTOMATIC, FAN, automatically until the temperature inside the air AND PROGRAM DRY OPERATION conditioner reaches a certain level. At this time, Operate in the following order. the remote controller displays “...
  • Page 295 Instruction SiAU18-715 • Keep doors and windows closed. If the doors and TIMER MODE START/STOP windows remain open, room air will flow out and cause to decrease the effect of cooling and heating. • Do not place other heaters directly below the Press the TIMER MODE START/STOP button indoor unit.
  • Page 296 SiAU18-715 Instruction 1. Open the suction grille. NOTE Slide both knobs simultaneously as shown and • Do not wash the air conditioner with hot water of then pull them downward. more than 50°C, as doing so may result in discol- (Do the same procedure for closing.) oration and/or deformation.
  • Page 297 • When the main power switch is turned on, some becomes uneven. It is necessary to clean the watts of electricity is being used even if the sys- inside of the indoor unit. Ask your Daikin dealer tem is not operating. for details on cleaning the unit. This operation Turn off the main power supply switch for saving requires a qualified service person.
  • Page 298 • If the heat source of the room is excessive INSPECTION which a malfunction occurs (when cooling). display MALFUNCTION CODE Cooling effect decreases if heat gain of the room is too large. Measure: Notify your Daikin dealer and inform him/her of the display. 3P156215-3 Operation Manual...

  • Page 299: Ceiling Suspended Type

    Instruction SiAU18-715 Ceiling Suspended Type Operation Manual...
  • Page 300 If your installation has a customized control system, 1. WHAT TO DO BEFORE OPERATION ask your Daikin dealer for the operation that corre- sponds to your system. This operation manual is for the following systems with standard control. Before initiating operation, •...
  • Page 301 Contact your Daikin Dealer and verify which Continued operation under such circumstances outdoor unit you have. may result in a failure, electric shock, and fire.
  • Page 302 SiAU18-715 Instruction Be sure to install an earth leakage breaker. The appliance is not intended for use by young Failure to install an earth leakage breaker may children or infirm persons without supervision. result in electric shocks, or fire. Young children should be supervised to Consult the dealer if the air conditioner sub- ensure that they do not play with the appliance.
  • Page 303 Instruction SiAU18-715 HEATING 3. OPERATION RANGE INDOOR OUTDOOR OUTDOOR If the temperature or the humidity is beyond the fol- TEMPERA- UNIT TEMPERATURE lowing conditions, safety devices may work and the TURE air conditioner may not operate, or sometimes, – 9 to 21 water may drop from the indoor unit.
  • Page 304 SiAU18-715 Instruction Regarding wiring DISPLAY “ ” “ ” “ ” “ ” • All wiring must be performed by an authorized (VENTILATION/AIR CLEANING) electrician. This display shows that the total heat To do wiring, ask your dealer. Never do it by your- exchange and the air cleaning unit are in self.
  • Page 305 Refer to figure 1 on page [1] • Operating procedure varies with heat pump type Regarding outside air temperature and heat- and cooling only type. Contact your Daikin dealer ing capacity to confirm your system type. • The heating capacity of the air conditioner •...
  • Page 306 • The movable limit of the flap is changeable. Con- • Programming the start time ( tact your Daikin dealer for details..The system starts Press the AIR FLOW DIRECTION ADJUST operating after the set time has elapsed.
  • Page 307 Instruction SiAU18-715 • Turn off the main power supply switch when it is PROGRAMMING TIME not used for long periods of time. When the main power switch is turned on, some watts of electricity Press the PROGRAMMING TIME button and is being used even if the system is not operating.
  • Page 308 SiAU18-715 Instruction B)Washing with water Fig. 3 When the air filter is very dirty, use soft brush and neutral detergent. Remove water and dry in the shade. NOTE • Do not wash the air conditioner with hot water of more than 50˚C, as doing so may result in discol- Fig.
  • Page 309 Instruction SiAU18-715 • When very grimy 9. NOT MALFUNCTION OF THE AIR Directly apply the type of detergent used for CONDITIONER cleaning ventilation fans or ovens, wait 10 min- utes, and then rinse with water. The following symptoms do not indicate air condi- tioner malfunction NOTE •...
  • Page 310 Refer to page 6. inated, the temperature distribution inside a room becomes uneven. It is necessary to clean the inside of the indoor unit. Ask your Daikin dealer for details on cleaning the unit. This operation requires a qualified service person.
  • Page 311 • If the doors or the windows are open. MALFUNCTION CODE Shut doors or windows to prevent wind from Measure: Notify your Daikin dealer and inform coming in. him/her of the display. • If direct sunlight enters the room (when cool- ing).

  • Page 312: Part 8 Troubleshooting

    SiAU18-715 Part 8 Troubleshooting 1. Caution for Diagnosis................301 1.1 Troubleshooting with the Operation Lamp (RA Indoor Unit) ....301 1.2 Troubleshooting with the LED on the SkyAir Indoor Unit .....302 1.3 Troubleshooting with the LED on the Outdoor Unit......303 1.4 Troubleshooting with the LED on the BP Unit ........304 2.

  • Page 313: Siau18

    SiAU18-715 7. Troubleshooting for Outdoor Unit............357 7.1 Faulty Outdoor Unit PCB..............357 7.2 Actuation of High Pressure Switch ............358 7.3 Actuation of Low Pressure Sensor ............360 7.4 Compressor Motor Lock ...............362 7.5 Malfunction of Outdoor Unit Fan Motor ..........363 7.6 Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) ...................364 7.7 Abnormal Discharge Pipe Temperature ..........366 7.8 Refrigerant Overcharged..............367...

  • Page 314: Caution For Diagnosis

    SiAU18-715 Caution for Diagnosis 1. Caution for Diagnosis Troubleshooting with the Operation Lamp (RA Indoor Unit) The operation lamp blinks when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation.

  • Page 315: Troubleshooting With The Led On The Skyair Indoor Unit

    Caution for Diagnosis SiAU18-715 Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode butting". Check followings; Are the operation modes all the same for indoor units connected to Multi system outdoor unit? If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking.

  • Page 316: Troubleshooting With The Led On The Outdoor Unit

    SiAU18-715 Caution for Diagnosis Troubleshooting with the LED on the Outdoor Unit There are green and orange LEDs on the PCB. The blinking green LED indicates normal equipment condition, and the OFF condition of the orange LED indicates normal equipment condition.

  • Page 317: Troubleshooting With The Led On The Bp Unit

    Caution for Diagnosis SiAU18-715 Troubleshooting with the LED on the BP Unit LEDA(H1P) LED1(H2P) LED2(H3P) LED3(H4P) LED4(H5P) (Q0395) GREEN LED-B (GREEN) NORMALLY FLASHING NORMALLY OFF INTERCOMMNICATION TO DIAGNOSIS OUTDOOR UNIT : NORMAL NORMAL FLASH ABNORMALITY → CHECK INTER-UNIT WIRING  ABNORMALITY →...

  • Page 318: Service Check Function

    SiAU18-715 Service Check Function Service Check Function RA Indoor Unit Wireless Remote Controller In the ARC433 series remote controller, the temperature display sections on the main unit indicate corresponding codes. ARC433 Series 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.
  • Page 319 Service Check Function SiAU18-715 ARC452A Series 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section. <Open the lid> TIMER CANCEL button It cancels the timer setting. < ARC452A2 > (R6757) 2.
  • Page 320 SiAU18-715 Service Check Function Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP▲,TEMP▼, MODE) simultaneously. (R4272) The digit of the number of tens blinks. ★ Try again from the start when the digit does not blink. (R4273) 2.
  • Page 321 Service Check Function SiAU18-715 5. Press the TEMP button. Press TEMP▲ or TEMP▼ and change the digit until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The both numbers of tens and units do not accord with the error code. ★...
  • Page 322 SiAU18-715 Service Check Function Error Code List in - : Not used for troubleshooting Relation to RA Indication on Description of the Fault Details of fault the remote (Refer to the Indoor Units controller indicated page.) Indoor unit in normal condition (Conduct a diagnosis of the outdoor —...

  • Page 323: Skyair Indoor Unit Inspection/Test Button

    Service Check Function SiAU18-715 SkyAir Indoor Unit INSPECTION/TEST Button Explanation The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Depress Inspection/Test Operation button for more than 4 seconds.

  • Page 324: Skyair Indoor Unit Wired Remote Controller

    SiAU18-715 Service Check Function SkyAir Indoor Unit Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 325: Skyair Indoor Unit Wireless Remote Controller

    Service Check Function SiAU18-715 SkyAir Indoor Unit Wireless Remote Controller If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
  • Page 326 SiAU18-715 Service Check Function Troubleshooting...

  • Page 327: Sky Air Indoor Unit Error Codes And Led Indication

    Service Check Function SiAU18-715 Sky Air Indoor Unit Error Codes and LED Indication Symbols : Blinks : On : Off — : No connection with troubleshooting : High probability of malfunction : Possibility of malfunction : Low probability of malfunction —...

  • Page 328: Malfunction Code Indication By Outdoor Unit Pcb

    SiAU18-715 Service Check Function Malfunction Code Indication by Outdoor Unit PCB <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in In-phase malfunction of DIII-NET Detection of DIII-NET “Setting mode 1”. Abnormal discharge pressure HPS activated Abnormal suction pressure...
  • Page 329 Service Check Function SiAU18-715 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗1 ∗1 ∗1...
  • Page 330 SiAU18-715 Service Check Function <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in Open phase/Power supply imbalance Imbalance of inverter power supply “Setting mode 1”. voltage Faulty temperature sensor of inverter Faulty thermistor of inverter fin radiation fin Gas shortage...
  • Page 331 Service Check Function SiAU18-715 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗1 ∗1 Display of contents of...

  • Page 332: List Of Malfunction Code

    SiAU18-715 List of Malfunction Code List of Malfunction Code 9: Blink 8: ON 7: OFF Malfunction Malfunction contents Page Referred code RA Indoor SkyAir BP Unit Outdoor Unit Indoor Unit Unit Indoor Error of external protection device — — — —...
  • Page 333 List of Malfunction Code SiAU18-715 9: Blink 8: ON 7: OFF Malfunction Malfunction contents Page Referred code RA Indoor SkyAir BP Unit Outdoor Unit Indoor Unit Unit Outdoor Malfunction of PC board — — — Unit Malfunction of inverter radiating fin temperature rise —...

  • Page 334: Troubleshooting For Ra Indoor Unit

    SiAU18-715 Troubleshooting for RA Indoor Unit Troubleshooting for RA Indoor Unit Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 10 continuous seconds. Decision Conditions Supposed...

  • Page 335: Freeze-Up Protection Control Or High Pressure Control

    Troubleshooting for RA Indoor Unit SiAU18-715 Freeze-up Protection Control or High Pressure Control Remote Controller Display Method of High pressure control (heat pump model only) Malfunction During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection The freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
  • Page 336 SiAU18-715 Troubleshooting for RA Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the air passage. Refer to P.329 Is there any short-circuit? Provide sufficient air passage. Check the intake air filter.

  • Page 337: Fan Motor Or Related Abnormality

    Troubleshooting for RA Indoor Unit SiAU18-715 Fan Motor or Related Abnormality 4.3.1 AC Motor (Duct, Floor / Ceiling) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction...
  • Page 338 SiAU18-715 Troubleshooting for RA Indoor Unit 4.3.2 DC Motor (Wall, Floor Standing) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
  • Page 339 Troubleshooting for RA Indoor Unit SiAU18-715 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off power supply and rotate fan by hand. Refer to P.328 Does fan rotate Replace fan motor.

  • Page 340: Thermistor Or Related Abnormality (Indoor Unit)

    SiAU18-715 Troubleshooting for RA Indoor Unit Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation ∗...

  • Page 341: Check

    Troubleshooting for RA Indoor Unit SiAU18-715 Check 4.5.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7 and 4-8). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.

  • Page 342: Thermistor Resistance Check

    SiAU18-715 Troubleshooting for RA Indoor Unit 4.5.2 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.

  • Page 343: Hall Ic Check

    Troubleshooting for RA Indoor Unit SiAU18-715 4.5.3 Hall IC Check Check No.16 1. Check the connector connection. 2. With the power ON, operation OFF, and the connector connected, check the following. ∗ Output voltage of about 5 V between pins 1 and 3. ∗...

  • Page 344: Troubleshooting For Skyair Indoor Unit

    SiAU18-715 Troubleshooting for SkyAir Indoor Unit Troubleshooting for SkyAir Indoor Unit Indoor Unit PCB Abnormality Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 345: Malfunction Of Drain Water Level System (Float Type)

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 Malfunction of Drain Water Level System (Float Type) Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of By float switch OFF detection Malfunction Detection Malfunction When rise of water level is not a condition and the float switch goes OFF. Decision Conditions Supposed...
  • Page 346 SiAU18-715 Troubleshooting for SkyAir Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. If “A3” is detected by a PC board which is not mounted with X15A, the PC board is defective.

  • Page 347: Malfunction Of Drain System

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 Malfunction of Drain System Remote Controller Display Applicable Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation. Malfunction Detection Malfunction When the float switch changes from ON to OFF while the compressor is in non-operation. Decision Conditions Supposed...

  • Page 348: Indoor Unit Fan Motor Lock

    SiAU18-715 Troubleshooting for SkyAir Indoor Unit Indoor Unit Fan Motor Lock Remote Controller Display Applicable Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction When number of turns can’t be detected even when output voltage to the fan is maximum Decision Conditions Supposed...

  • Page 349: Malfunction Of Indoor Unit Fan Motor

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 Malfunction of Indoor Unit Fan Motor Remote Controller Display Applicable FFQ, FCQ, FBQ Models Method of Detection of abnormal fan speed by signal from the fan motor Malfunction Detection Malfunction When fan speed does not increase Decision Conditions Supposed...
  • Page 350 SiAU18-715 Troubleshooting for SkyAir Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off the power supply. Refer to P.348 Is there any foreign matter Remove the foreign matter.

  • Page 351: Swing Flap Motor Malfunction / Lock

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 Swing Flap Motor Malfunction / Lock Remote Controller Display Applicable Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time (about 30 seconds).
  • Page 352 SiAU18-715 Troubleshooting for SkyAir Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Are the connectors correctly Connect correctly. connected to X29A and X14A on the PC board? Is the limit switch's transfer...

  • Page 353: Malfunction Of Capacity Setting

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 Malfunction of Capacity Setting Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ 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 354: Malfunction Of Heat Exchanger Thermistor (R2T)

    SiAU18-715 Troubleshooting for SkyAir Indoor Unit Malfunction of Heat Exchanger Thermistor (R2T) Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction detection is carried out by temperature detected by heat exchanger sensor. Malfunction Detection Malfunction When the heat exchanger thermistor becomes disconnected or shorted while the unit is running. Decision Conditions Supposed...

  • Page 355: Malfunction Of Heat Exchanger Thermistor (R3T)

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 Malfunction of Heat Exchanger Thermistor (R3T) Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction detection is carried out by temperature detected by heat exchanger sensor (R3T). Malfunction Detection Malfunction When the heat exchanger thermistor becomes disconnected or shorted while the unit is running. Decision Conditions Supposed...

  • Page 356: Malfunction Of Suction Air Thermistor

    SiAU18-715 Troubleshooting for SkyAir Indoor Unit 5.10 Malfunction of Suction Air Thermistor Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction detection is carried out by temperature detected by suction air temperature sensor. Malfunction Detection Malfunction When the suction air temperature sensor’s thermistor becomes disconnected or shorted while the unit is running.

  • Page 357: Malfunction Of Remote Controller Thermistor

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 5.11 Malfunction of Remote Controller Thermistor Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Even if remote controller thermistor is faulty, system is possible to operate by system thermistor. Malfunction detection is carried out by temperature detected by remote controller thermistor. Malfunction Detection Malfunction...

  • Page 358: Transmission Error (Between Indoor Unit And Remote Controller)

    SiAU18-715 Troubleshooting for SkyAir Indoor Unit 5.12 Transmission Error (between Indoor Unit and Remote Controller) Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Microcomputer checks if transmission between indoor unit and remote controller is normal. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision...

  • Page 359: Transmission Error (Between Main And Sub Remote Controller)

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 5.13 Transmission Error (between Main and Sub Remote Controller) Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of In case of controlling with 2- remote controller, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 360: Malfunction Of Field Setting Switch

    SiAU18-715 Troubleshooting for SkyAir Indoor Unit 5.14 Malfunction of Field Setting Switch Remote Controller Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction Detection Malfunction Incorrect field setting Decision Conditions Supposed Indoor-Outdoor (BP) transmission line Faulty remote controller wiring Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector,...

  • Page 361: 5.15 Check

    Troubleshooting for SkyAir Indoor Unit SiAU18-715 5.15 Check Check No. 01 Check for Fan Motor Connector (Power Supply Line) (1) Turn the power supply off. With the relay connector disconnected, measure the resistance between UVW phases of the connector (3 cores) at the motor side, then make sure that the resistance between each phase is balanced and not short-circuited.
  • Page 362 SiAU18-715 Troubleshooting for SkyAir Indoor Unit Check No. 02 Check for Thermistors Disconnect the thermistor connector from PCB, then measure the resistance by using a tester. Unit : kΩ Thermistor temperature and resistance characteristics Temperature °C -6.0 90.8 88.0 -4.0 81.7 79.1 -2.0...

  • Page 363: Troubleshooting For Bp Unit

    Troubleshooting for BP Unit SiAU18-715 6. Troubleshooting for BP Unit Malfunction of Electronic Expansion Valve Remote Controller Display Method of Detection by checking continuity and lack of connector. Malfunction Detection Malfunction Malfunction is determined by no common voltage applied when turning the power supply on. Decision Conditions Supposed...

  • Page 364: Faulty Bp Unit Pcb

    SiAU18-715 Troubleshooting for BP Unit Faulty BP Unit PCB Remote Controller Display Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power Decision supply is turned off.

  • Page 365: Faulty Bp Liquid Or Gas Pipe Thermistor

    Troubleshooting for BP Unit SiAU18-715 Faulty BP Liquid or Gas Pipe Thermistor Remote Controller Display Method of Malfunction Detection Malfunction When the BP liquid or gas pipe temperature sensor became short-circuited or open. Decision Conditions Supposed Faulty BP liquid or gas pipe temperature sensor Causes Faulty connectors connection of BP liquid or gas pipe temperature sensor Troubleshooting...

  • Page 366: Transmission Error Between Indoor Unit And Bp Unit

    SiAU18-715 Troubleshooting for BP Unit Transmission Error between Indoor Unit and BP Unit Outdoor Unit Indication Method of The data received from the BP unit in indoor unit-BP unit signal transmission is checked whether it is normal. Malfunction Detection Malfunction When the data sent from the BP unit cannot be received normally, or when the content of the data is abnormal.
  • Page 367 Troubleshooting for BP Unit SiAU18-715 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Push and hold the RESET button on Check No.14 the outdoor unit PCB for 5 seconds Refer to P.356 Does the malfunction Normal...

  • Page 368: Transmission Error Between Outdoor Unit And Bp Unit

    SiAU18-715 Troubleshooting for BP Unit Transmission Error between Outdoor Unit and BP Unit Outdoor Unit Indication Method of Transmission error is detected when the outdoor unit could not received the data from BP unit correctly. Malfunction Detection Malfunction When the data from BP unit could not be correctly received continuously for 10 minutes Decision Conditions Supposed...

  • Page 369: Check

    Troubleshooting for BP Unit SiAU18-715 Check 6.6.1 Power Supply Waveforms Check Check No.14 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...

  • Page 370: Troubleshooting For Outdoor Unit

    SiAU18-715 Troubleshooting for Outdoor Unit 7. Troubleshooting for Outdoor Unit Faulty Outdoor Unit PCB Remote Controller Display Applicable AII outdoor unit models Models Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 371: Actuation Of High Pressure Switch

    Troubleshooting for Outdoor Unit SiAU18-715 Actuation of High Pressure Switch Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction Error is generated when the HPS activation count reaches the number specific to the operation mode.
  • Page 372 SiAU18-715 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Check for the points shown below. Refer to P.402 Is the stop valve open? Is the HPS connector properly connected to the main PCB? Does the high pressure switch have continuity?

  • Page 373: Actuation Of Low Pressure Sensor

    Troubleshooting for Outdoor Unit SiAU18-715 Actuation of Low Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure. Operating pressure:0.07MPa Decision Conditions...
  • Page 374 SiAU18-715 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.02 Refer to P.403 Is the stop valve open? Open the stop valve. Mount a pressure gauge on the low-pressure service port. Connect the Service Checker.

  • Page 375: Compressor Motor Lock

    Troubleshooting for Outdoor Unit SiAU18-715 Compressor Motor Lock Remote Controller Display Applicable AII outdoor unit models 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 376: Malfunction Of Outdoor Unit Fan Motor

    SiAU18-715 Troubleshooting for Outdoor Unit Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction of fan motor system is detected according to the fan speed detected by Hall IC when the fan motor runs. Malfunction Detection Malfunction...

  • Page 377: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E, Y3E)

    Troubleshooting for Outdoor Unit SiAU18-715 Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) Remote Controller Display Applicable AII outdoor unit models Models Method of Check disconnection of connector Check continuity of expansion valve coil Malfunction Detection Malfunction Error is generated under no common power supply when the power is on. Decision Conditions Supposed...
  • Page 378 SiAU18-715 Troubleshooting for Outdoor Unit 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 379: Abnormal Discharge Pipe Temperature

    Troubleshooting for Outdoor Unit SiAU18-715 Abnormal Discharge Pipe Temperature Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction When the discharge pipe temperature rises to an abnormally high level When the discharge pipe temperature rises suddenly Decision Conditions...

  • Page 380: Refrigerant Overcharged

    SiAU18-715 Troubleshooting for Outdoor Unit Refrigerant Overcharged Remote Controller Display Applicable All outdoor unit models Models Method of Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature during a check operation. Malfunction Detection Malfunction When the amount of refrigerant, which is calculated by using the heat exchanging deicer temperature during a check run, exceeds the standard.

  • Page 381: Malfunction Of Thermistor For Outdoor Air (R1T)

    Troubleshooting for Outdoor Unit SiAU18-715 Malfunction of Thermistor for Outdoor Air (R1T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction When the outside air temperature thermistor has short circuit or open circuit. Decision Conditions Supposed...

  • Page 382: Malfunction Of Discharge Pipe Thermistor (R2T)

    SiAU18-715 Troubleshooting for Outdoor Unit 7.10 Malfunction of Discharge Pipe Thermistor (R2T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected. Decision Conditions Supposed...

  • Page 383: Malfunction Of Thermistor (R3T, R5T) For Suction Pipe1, 2

    Troubleshooting for Outdoor Unit SiAU18-715 7.11 Malfunction of Thermistor (R3T, R5T) for Suction Pipe1, 2 Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2. Malfunction Detection Malfunction...

  • Page 384: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger

    SiAU18-715 Troubleshooting for Outdoor Unit 7.12 Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.

  • Page 385: Malfunction Of Thermistor (R7T) For Outdoor Unit Liquid Pipe

    Troubleshooting for Outdoor Unit SiAU18-715 7.13 Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the liquid pipe thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.

  • Page 386: Malfunction Of Subcooling Heat Exchanger Thermistor (R6T)

    SiAU18-715 Troubleshooting for Outdoor Unit 7.14 Malfunction of Subcooling Heat Exchanger Thermistor (R6T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor. Malfunction Detection Malfunction When the subcooling heat exchanger gas pipe thermistor is short circuited or open.

  • Page 387: Malfunction Of High Pressure Sensor

    Troubleshooting for Outdoor Unit SiAU18-715 7.15 Malfunction of High Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit. Decision Conditions Supposed...

  • Page 388: Malfunction Of Low Pressure Sensor

    SiAU18-715 Troubleshooting for Outdoor Unit 7.16 Malfunction of Low Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit. Decision Conditions Supposed...

  • Page 389: Malfunction Of Pcb

    Troubleshooting for Outdoor Unit SiAU18-715 7.17 Malfunction of PCB Remote Controller Display Applicable AII outdoor unit models Models Method of Detect malfunctions by current value during waveform output before compressor startup. Detect malfunctions by current sensor value during synchronized operation at the time of Malfunction startup.

  • Page 390: Malfunction Of Inverter Radiating Fin Temperature Rise

    SiAU18-715 Troubleshooting for Outdoor Unit 7.18 Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable AII outdoor unit models Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the inverter radiation fin increases above 83°C. Decision Conditions Supposed...

  • Page 391: Inverter Compressor Abnormal

    Troubleshooting for Outdoor Unit SiAU18-715 7.19 Inverter Compressor Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor. (Instantaneous overcurrent also causes activation.) Decision Conditions...

  • Page 392: Inverter Current Abnormal

    SiAU18-715 Troubleshooting for Outdoor Unit 7.20 Inverter Current Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected. Decision Conditions Supposed...

  • Page 393: Inverter Start Up Error

    Troubleshooting for Outdoor Unit SiAU18-715 7.21 Inverter Start up Error Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup Decision Conditions Supposed...

  • Page 394: Malfunction Of Transmission Between Inverter And Control Pcb

    SiAU18-715 Troubleshooting for Outdoor Unit 7.22 Malfunction of Transmission between Inverter and Control PCB Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction When the correct communication is not conducted in certain period.

  • Page 395: High Voltage Of Capacitor In Main Inverter Circuit

    Troubleshooting for Outdoor Unit SiAU18-715 7.23 High Voltage of Capacitor in Main Inverter Circuit Remote Controller Display Applicable All outdoor unit models Models Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in the inverter.

  • Page 396: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor

    SiAU18-715 Troubleshooting for Outdoor Unit 7.24 Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction When the resistance value of thermistor becomes a value equivalent to open or short circuited status.

  • Page 397: Faulty Combination Of Inverter And Fan Driver

    Troubleshooting for Outdoor Unit SiAU18-715 7.25 Faulty Combination of Inverter and Fan Driver Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction When the communication data about inverter PCB type is incorrect. Decision Conditions Supposed...

  • Page 398: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    SiAU18-715 Troubleshooting for Outdoor Unit 7.26 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure saturation temperature.
  • Page 399 Troubleshooting for Outdoor Unit SiAU18-715 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Low pressure is Cooling Out of gas, closing of stop 0.25 MPa or less. valve or refrigerant system is clogged.

  • Page 400: Power Supply Insufficient Or Instantaneous Failure

    SiAU18-715 Troubleshooting for Outdoor Unit 7.27 Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power supply voltage are detected.
  • Page 401 Troubleshooting for Outdoor Unit SiAU18-715 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.03 Is the power Refer to P.404 supply voltage Correct power supply 200~240V ±10%? Is the P-N resistance not less Field factors...

  • Page 402: Check Operation Not Executed

    SiAU18-715 Troubleshooting for Outdoor Unit 7.28 Check Operation not Executed Remote Controller Display Applicable AII outdoor unit models Models Method of Check operation is executed or not Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation. Decision Conditions Supposed...

  • Page 403: Malfunction Of Transmission Between Indoor Units And Outdoor Units

    Troubleshooting for Outdoor Unit SiAU18-715 7.29 Malfunction of Transmission between Indoor Units and Outdoor Units Remote Controller Display Applicable AII indoor unit models AII outdoor unit models Models Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
  • Page 404 SiAU18-715 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor Push and hold the RESET or outdoor - outdoor unit button on the master...

  • Page 405: Malfunction Of Transmission Between Remote Controller And Indoor Unit

    Troubleshooting for Outdoor Unit SiAU18-715 7.30 Malfunction of Transmission between Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using microcomputer is signal transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 406: Malfunction Of Transmission Between Main And Sub Remote Controllers

    SiAU18-715 Troubleshooting for Outdoor Unit 7.31 Malfunction of Transmission between Main and Sub Remote Controllers Remote Controller Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 407: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    Troubleshooting for Outdoor Unit SiAU18-715 7.32 Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Causes Defect of PCB of indoor unit in other system...

  • Page 408: Siau18

    SiAU18-715 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. "U9" has been displayed for 2 Re-diagnose by display minutes or more. after passage of 2 minutes or more.

  • Page 409: Excessive Number Of Indoor Units

    Troubleshooting for Outdoor Unit SiAU18-715 7.33 Excessive Number of Indoor Units Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Excess of connected indoor units Defect of outdoor unit PCB (A1P) Causes Mismatching of the refrigerant type of indoor and outdoor unit.

  • Page 410: Address Duplication Of Central Remote Controller

    SiAU18-715 Troubleshooting for Outdoor Unit 7.34 Address Duplication of Central Remote Controller Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller Defect of indoor unit PCB Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector,...

  • Page 411: Malfunction Of Transmission Between Central Remote Controller And Indoor Unit

    Troubleshooting for Outdoor Unit SiAU18-715 7.35 Malfunction of Transmission between Central Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Centralized controller Models Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal.
  • Page 412 SiAU18-715 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been Reset power supply remove or its address simultaneously for all changed? optional controllers for centralized control.

  • Page 413: System Is Not Set Yet

    Troubleshooting for Outdoor Unit SiAU18-715 7.36 System is not Set yet Remote Controller Display Applicable All indoor unit models Models All 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 414: Malfunction Of System, Refrigerant System Address Undefined

    SiAU18-715 Troubleshooting for Outdoor Unit 7.37 Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable All indoor unit models All outdoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor Causes Defect of indoor unit PCB...

  • Page 415: Check

    Check SiAU18-715 8. Check Check No.01 Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. ←Check to be sure the stop valve is open. Stop valve closed Local High pipe ←Conduct visual checks for pipe conditions.
  • Page 416 SiAU18-715 Check Check No.02 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 Faulty (See *1.) compressor ←Is the pressure value checked with the Service Checker Faulty low Faulty control PCB...
  • Page 417 Check SiAU18-715 Check No. 03 Check for Fan Motor Connector (1) Turn the power supply off. (2) With the fan motor connector disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table. 1 White Measurement point Judgment...

  • Page 418: Thermistor Resistance / Temperature Characteristics

    SiAU18-715 Thermistor Resistance / Temperature Characteristics Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air Outdoor unit for fin thermistor For suction pipe 1 For heat exchanger For suction pipe 2 For Subcooling heat exchanger outlet R6T For Liquid pipe (k Ω...
  • Page 419 Thermistor Resistance / Temperature Characteristics SiAU18-715 Outdoor Unit Thermistors for Discharge Pipe (R2T) (k Ω ) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01...

  • Page 420: 10.Pressure Sensor

    SiAU18-715 Pressure Sensor 10.Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) High Pressure (P Low Pressure (P...

  • Page 421: Method Of Replacing The Inverter's Power Transistors Modules

    Method of Replacing The Inverter’s Power Transistors Modules SiAU18-715 11.Method of Replacing The Inverter’s Power Transistors 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. <Items to be prepared>...
  • Page 422 SiAU18-715 Method of Replacing The Inverter’s Power Transistors Modules Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal Criterion Remark Not less than 0.3V It may take time to (including ∞)* determine the voltage due to capacitor...
  • Page 423 Method of Replacing The Inverter’s Power Transistors Modules SiAU18-715 Troubleshooting...

  • Page 424: Part 9 Appendix

    SiAU18-715 Part 9 Appendix 1. Piping Diagrams..................412 1.1 Outdoor Units ..................412 1.2 BP Units ....................413 1.3 Indoor Units ..................414 2. Wiring Diagrams..................420 2.1 Outdoor Units ..................420 2.2 BP Units ....................422 2.3 Indoor Units ..................423 Appendix...

  • Page 425: Piping Diagrams

    Piping Diagrams SiAU18-715 Piping Diagrams Outdoor Units RMKS112/140/160EV1A, RMXS112/140/160EV1A Electronic expansion valve Double pipe Electronic expansion valve heat exchanger Filter Heat exchanger Pressure regulating valve Filter Service port Four way valve High pressure Service port sensor Low pressure sensor Filter Capillary tube Solenoid...

  • Page 426: Bp Units

    SiAU18-715 Piping Diagrams BP Units BPMKS967A2 INDOOR UNIT GAS SIDE ROOM A REFRIGERANT FLOW THERMISTOR ( DGA ) ( 15.9CuT ) HEATING LOCAL PIPING COOLING GAS SIDE ROOM B THERMISTOR ( DGB ) ( 15.9CuT ) LOCAL PIPING ELECTRONIC EXPANSION VALVE ( BYPASS ) ELECTRONIC INDOOR UNIT FILTER...

  • Page 427: Indoor Units

    Piping Diagrams SiAU18-715 Indoor Units 1.3.1 Wall Mounted Type FTKS20DVMA FTXS20DVMA FTKS25/35EVMA FTXS25/35EVMA INDOOR UNIT INDOOR UNIT MAFFLER ASSY HEAT EXCHANGER MAFFLER ASSY 7.0CuT HEAT EXCHANGER 7.0CuT 6.4CuT 6.4CuT THERMISTOR 6.4CuT THERMISTOR ON HEAT EXCH. 6.4CuT ON HEAT EXCH. 6.4CuT 6.4CuT CROSS FLOW FAN FIELD PIPING...
  • Page 428 SiAU18-715 Piping Diagrams FTKS71FVMA FTXS71FVMA INDOOR UNIT INDOOR UNIT ( 7.9CuT ) ( 7.9CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT EXCH. ON HEAT EXCH. CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING ( 6.4CuT ) ( 6.4CuT ) FAN MOTOR FAN MOTOR...
  • Page 429 Piping Diagrams SiAU18-715 1.3.3 Floor / Ceiling Suspended Dual Type FLXS25/35BVMA FLXS50/60BVMA INDOOR UNIT INDOOR UNIT ( 9.5CuT ) ( 6.4CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT FIELD PIPING ON HEAT FIELD PIPING EXCH. ( 6.4CuT ) ( 6.4CuT ) EXCH.
  • Page 430 SiAU18-715 Piping Diagrams 1.3.4 Floor Standing Type FVXS25/35FV1A INDOOR UNIT MUFFLER ASSY HEAT EXCHANGER 6.4CuT 7.0CuT 6.4CuT THERMISTOR ON HEAT EXCH. 6.4CuT FIELD PIPING FAN MOTOR TURBO FAN 6.4CuT (6.4CuT) 9.5CuT FIELD PIPING (9.5CuT) REFRIGERANT FLOW COOLING HEATING 4D056137 FVXS50FV1A INDOOR UNIT MUFFLER ASSY HEAT EXCHANGER...
  • Page 431 Piping Diagrams SiAU18-715 1.3.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B8V1B Indoor heat exchanger MODEL FFQ25 • 35B8V1B FFQ50 • 60B8V1B 12.7 Field piping φ C1220T-O Outdoor unit Field piping φ C1220T-O Indoor unit C : 4D039335 FCQ35/50/60/71BVE Indoor heat exchanger φ Field piping C1220T-0 φ...
  • Page 432 SiAU18-715 Piping Diagrams 1.3.6 Ceiling Mounted Built-in Type FBQ60/71BV1 Indoor heat exchanger φ Field piping C1220T-0 φ Field piping C1220T-0 Outdoor unit Indoor unit MODEL FHQ35BUV1B FHQ35BVV1B FCQ35BVE FCQ35C7VEB FHQ50, 60BUV1B FHQ50, 60BVV1B FCQ50, 60BVE 12.7 FBQ60BV1 FBQ60BVL FCQ50, 60C7VEB FUQ71, 100, 125BUV1B FUQ71, 100, 125BVV1B FHQ71, 100, 125BUV1B...

  • Page 433: Wiring Diagrams

    Wiring Diagrams SiAU18-715 Wiring Diagrams Outdoor Units RMKS112/140/160EV1A Appendix...
  • Page 434 SiAU18-715 Wiring Diagrams RMXS112/140/160EV1A Appendix...

  • Page 435: Bp Units

    Wiring Diagrams SiAU18-715 BP Units BPMKS967A2 ( DLA ) ( DGA ) ( DLB ) ( DGB ) t° t° t° t° FIELD WIRING X22A ROOM B ( BLU ) X21A LEDA ROOM A INDOOR ( RED ) LED1 ROOM A TRANSMISSION LED2 X20A...

  • Page 436: Indoor Units

    SiAU18-715 Wiring Diagrams Indoor Units 2.3.1 Wall Mounted Type FTKS20DVMA, FTKS25/35EVMA FTXS20DVMA, FTXS25/35EVMA FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A LED1 OUTDOOR LED2 CAUTION LED3 TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
  • Page 437 Wiring Diagrams SiAU18-715 2.3.2 Duct Connected Type CDKS25/35/50/60CVMA, CDKS25/35EAVMA, FDXS25/35/50/60CVMA, CDXS25/35EAVMA PCB1 PCB2 V1TR outdoor 3.15A FIELD WIRING. TERMINAL FOR CAUTION CENTRALIZED CONTROL TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK SIGNAL ON AGAIN.
  • Page 438 SiAU18-715 Wiring Diagrams 2.3.3 Floor / Ceiling Suspended Dual Type FLXS25/35/50/60BVMA PCB3 PCB1 PCB2 3.15A → outdoor FIELD WIRING. / YLW PCB4 TRANSMISSION CIRCUIT CAUTION NOTE THAT OPERATION WILL SIGNAL RESTART AUTOMATICALLY IF RECEIVER THE MAIN POWER SUPPLY IS indoor TURNED OFF AND THEN BACK ON AGAIN.
  • Page 439 Wiring Diagrams SiAU18-715 2.3.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B8V1B : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t˚ IN CASE OF SIMULTANEOUS t˚ t˚ OPERATION SYSTEM INDOOR UNIT INDOOR UNIT ( MASTER ) ( SLAVE ) NOTE ) 5...
  • Page 440 SiAU18-715 Wiring Diagrams FCQ35/50/60/71BVE :CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. :CONNECTER COLOUR FOR COMPONENTS. :CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t° t° t° X19A X18A X17A NOTE ) 3 TO BP UNIT NOTE ) 5 X61A NOTE ) 5 X24A X10A X24A X11A NOTE ) 3...
  • Page 441 Wiring Diagrams SiAU18-715 2.3.6 Ceiling Mounted Built-in Type FBQ60/71BV1 :CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. :CONNECTER COLOUR FOR COMPONENTS. :CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t° t ° t ° WIRED REMOTE CONTROLLER INDOOR UNIT ( OPTIONAL PARTS ) X19A X18A X17A X61A TO BP UNIT...
  • Page 442 SiAU18-715 Wiring Diagrams 2.3.7 Ceiling Suspended Type FHQ35/50/60BVV1B :CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. :CONNECTER COLOUR FOR COMPONENTS. t° :CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. IN CASE OF SIMULTANEOUS t° t° OPERATION SYSTEM INDOOR UNIT INDOOR UNIT TO OUTDOOR X18A X17A X19A (MASTER) (SLAVE)
  • Page 443 Wiring Diagrams SiAU18-715 Appendix...

  • Page 444: Index

    SiAU18-715 Index check for fan motor connector ......404 check operation ........... 131, 151 A1 ..............321, 331 check operation not executed ......389 A1P ................37 CJ ................ 344 A2P ................38 compressor motor lock ........362 A3 .................332 compressor PI control ........... 78 A3P ................39 condensation avoidance control (FHQ only) ..
  • Page 445 SiAU18-715 E5 ..............362 field setting E7 ..............363 wired remote controller ......... 153 E9 ..............364 wireless remote controller ......154 F3 ..............366 field setting from outdoor unit ......134 F6 ..............367 forced fan on ............161 H9 ..............368 forced operation ON/OFF switch J0 ..............352 ......
  • Page 446 SiAU18-715 J4 .................163 malfunction of field setting switch ......347 J5 .................370 malfunction of heat exchanger thermistor J6 .................371 (R2T) ............341 J7 .................372 malfunction of heat exchanger thermistor J9 .................373 (R3T) ............342 JA ........42, 44, 46, 48, 51, 163, 374 malfunction of high pressure sensor ....
  • Page 447 SiAU18-715 oil return operation ..........84 S1 .............. 42, 44, 46 ON/OFF button on indoor unit ......112 S201 ..............51 operation lamp .............301 S202 ..............51 operation mode ............76 S203 ..............51 outdoor unit identification function ......117 S204 ..............51 outdoor unit PCB layout ........133 S21 ..........
  • Page 448 SiAU18-715 thermistor X13A ..............36 indoor heat exchanger, X14A ..............62 troubleshooting ......341, 342 X15A ........... 54, 57, 60, 62 remote controller ..........344 X17A ..........36, 54, 57, 60, 62 suction air ............343 X18A ..........36, 54, 57, 60, 62 thermistor or related abnormality (indoor unit) ..327 X19A ...........
  • Page 449 SiAU18-715 Index...
  • Page 450 SiAU18-715 Drawings & Flow Charts Numerics DC motor ............325 faulty BP liquid or gas pipe thermistor ....352 3-D airflow ............101 faulty BP unit PCB ..........351 faulty combination of inverter and fan driver ..384 faulty outdoor unit PCB ........357 abnormal discharge pipe temperature ....366 field setting actuation of high pressure switch ......358...
  • Page 451 SiAU18-715 malfunction of heat exchanger thermistor FCQ35/50/60/71BVE ........418 (R2T) .............341 FDXS25/35/50/60CVMA ....... 415 malfunction of heat exchanger thermistor FFQ25/35/50/60B8V1B ........ 418 (R3T) .............342 FHQ35/50/60BVV1B ........419 malfunction of high pressure sensor ....374 FLXS25/35BVMA .......... 416 malfunction of indoor unit fan motor .....336 FLXS50/60BVMA ..........
  • Page 452 SiAU18-715 transmission error between indoor unit and BP unit ............353 transmission error between outdoor unit and BP unit ............355 trial operation from remote controller ....162 troubleshooting with the LED on the BP unit ..304 troubleshooting with the LED on the outdoor unit ........303 turn power on ............128 wired remote controller field setting ............153...
  • Page 453 Specifications, designs and other content appearing in this brochure are current as of May 2007 but subject to change without notice. SiAU 18-715 Printed in Japan 05/2007 B AK...

Table of Contents