SiBE18-821_C
Troubleshooting 323
Part 8
Troubleshooting
1. Troubleshooting with LED ...................................................................325
1.1 Outdoor Unit .........................................................................................325
1.2 BP Unit .................................................................................................330
1.3 Indoor Unit............................................................................................331
2. Service Check Function ......................................................................334
2.1 RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series............334
2.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series........................343
3. Error Codes and Description...............................................................350
4. Troubleshooting for RA Indoor Unit.....................................................352
4.1 Indoor Unit PCB Abnormality ...............................................................352
4.2 Freeze-up Protection Control or Heating Peak-cut Control..................353
4.3 Fan Motor or Related Abnormality .......................................................355
4.4 Thermistor or Related Abnormality (Indoor Unit)..................................358
4.5 Front Panel Open / Close Fault............................................................359
4.6 Check for RA Indoor Unit .....................................................................360
5. Troubleshooting for SA Indoor Unit.....................................................363
5.1 Indoor Unit PCB Abnormality ...............................................................363
5.2 Drain Water Level System Abnormality................................................364
5.3 Fan Motor or Related Abnormality (FHQ Series) .................................366
5.4 Swing Motor Lock (FHQ Series)...........................................................367
5.5 Drain System Abnormality....................................................................368
5.6 Indoor Liquid Pipe Thermistor (R2T) Abnormality ................................369
5.7 Indoor Heat Exchanger Thermistor (R3T) Abnormality ........................370
5.8 Suction Air Thermistor (R1T) Abnormality............................................371
5.9 Remote Controller Thermistor Abnormality ..........................................372
5.10 Transmission Error between Remote Controller and Indoor Unit.........373
5.11 Transmission Error between Main and Sub Remote Controllers .........374
5.12 Field Setting Switch Abnormality..........................................................375
6. Troubleshooting for BP Unit................................................................376
6.1 Electronic Expansion Valve Abnormality..............................................376
6.2 BP Unit PCB Abnormality.....................................................................377
6.3 BP Liquid or Gas Pipe Thermistor Abnormality....................................378
6.4 Transmission Error between Indoor Unit and BP Unit..........................379
6.5 Transmission Error between Outdoor Unit and BP Unit.......................381
6.6 Check for BP Unit.................................................................................382
7. Troubleshooting for Outdoor Unit........................................................383
7.1 Outdoor Unit PCB Abnormality.............................................................383
7.2 Actuation of High Pressure Switch .......................................................384
7.3 Actuation of Low Pressure Sensor .......................................................386
7.4 Compressor Motor Lock .......................................................................388
7.5 Outdoor Fan Motor Abnormality ...........................................................389
7.6 Moving Part of Electronic Expansion Valve (Y1E, Y3E) Abnormality...390
7.7 Discharge Pipe Temperature Abnormality ...........................................392
7.8 Refrigerant Overcharged......................................................................393
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