SiBE121021_C
284 Service Diagnosis
Part 6
Service Diagnosis
1. Troubleshooting with LED ...................................................................286
1.1 Indoor Unit............................................................................................286
1.2 Outdoor Unit .........................................................................................288
2. Problem Symptoms and Measures .....................................................289
3. Service Check Function ......................................................................290
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. Code Indication on Remote Controller ................................................306
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
5. Troubleshooting for RA Indoor Unit - F(C)TXG,
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
6. Troubleshooting for SA Indoor Unit - FFQ, FCQ,
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. Troubleshooting for Outdoor Unit........................................................333
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
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