Part 6 Service Diagnosis - Daikin Super Multi NX FFQ25B8V1B Service Manual

1. Troubleshooting with LED ...................................................................286
2. Problem Symptoms and Measures .....................................................289
3. Service Check Function ......................................................................290
4. Code Indication on Remote Controller ................................................306
5. Troubleshooting for RA Indoor Unit - F(C)TXG,
6. Troubleshooting for SA Indoor Unit - FFQ, FCQ,
7. Troubleshooting for Outdoor Unit........................................................333
284
Service Diagnosis
1.1 Indoor Unit............................................................................................286
1.2 Outdoor Unit .........................................................................................288
3.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS,
FLK(X)S, FDK(X)S Series ....................................................................290
3.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series........................299
4.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS,
FLK(X)S, FDK(X)S Series ....................................................................306
4.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series........................306
4.3 Outdoor Unit .........................................................................................307
FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series.................................308
5.1 Indoor Unit PCB Abnormality ...............................................................308
5.2 Freeze-up Protection Control or Heating Peak-cut Control..................309
5.3 Fan Motor or Related Abnormality .......................................................311
5.4 Thermistor or Related Abnormality (Indoor Unit)..................................314
5.5 Front Panel Open / Close Fault (FTXG and CTXG Series)..................315
5.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit) ....316
5.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit) .............318
FDBQ, FBQ, FHQ Series ....................................................................319
6.1 Indoor Unit PCB Abnormality ...............................................................319
6.2 Drain Water Level System Abnormality................................................320
6.3 Fan Motor or Related Abnormality .......................................................322
6.4 Swing Motor Lock (FHQ Series)...........................................................324
6.5 Drain System Abnormality....................................................................325
6.6 Thermistor or Related Abnormality.......................................................326
6.7 Remote Controller Thermistor Abnormality ..........................................328
6.8 Signal Transmission Error
(between Indoor Unit and Remote Controller)......................................329
6.9 Signal Transmission Error
(between MAIN Remote Controller and SUB Remote Controller)........330
6.10 Field Setting Abnormality .....................................................................331
7.1 Anti-icing Function................................................................................333
7.2 Outdoor Unit PCB Abnormality.............................................................335
7.3 OL Activation (Compressor Overload) .................................................336
7.4 Compressor Lock .................................................................................337
7.5 DC Fan Lock ........................................................................................338
7.6 Input Overcurrent Detection .................................................................339
7.7 Discharge Pipe Temperature Control...................................................340
SiBE121021_C
Part 6
Service Diagnosis