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SiBE121021_C
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Table of Contents
Fan Motor or Related Abnormality .......................................................311
Thermistor or Related Abnormality (Indoor Unit)..................................314
Front Panel Open / Close Fault (FTXG and CTXG Series)..................315
Signal Transmission Error (between Indoor Unit and Outdoor Unit) ....316
Unspecified Voltage (between Indoor Unit and Outdoor Unit) .............318
6. Troubleshooting for SA Indoor Unit - FFQ, FCQ,
FDBQ, FBQ, FHQ Series ....................................................................319
Indoor Unit PCB Abnormality ...............................................................319
Drain Water Level System Abnormality................................................320
Fan Motor or Related Abnormality .......................................................322
Swing Motor Lock (FHQ Series)...........................................................324
Drain System Abnormality....................................................................325
Thermistor or Related Abnormality.......................................................326
Remote Controller Thermistor Abnormality ..........................................328
Signal Transmission Error
(between MAIN Remote Controller and SUB Remote Controller)........330
7. Troubleshooting for Outdoor Unit........................................................333
Outdoor Unit PCB Abnormality.............................................................335
OL Activation (Compressor Overload) .................................................336
Compressor Lock .................................................................................337
Input Overcurrent Detection .................................................................339
Discharge Pipe Temperature Control...................................................340
High Pressure Control in Cooling .........................................................341
Compressor Sensor System Abnormality ............................................343
7.10 Position Sensor Abnormality ................................................................345
7.11 CT or Related Abnormality ...................................................................347
7.12 Thermistor or Related Abnormality (Outdoor Unit)...............................349
7.13 Electrical Box Temperature Rise..........................................................351
7.14 Radiation Fin Temperature Rise ..........................................................353
7.15 Output Overcurrent Detection ..............................................................355
7.16 Refrigerant Shortage ............................................................................357
7.17 Low-voltage Detection or Over-voltage Detection................................359
7.18 Signal Transmission Error (on Outdoor Unit PCB)...............................360
7.19 Anti-icing Function in Other Rooms / Unspecified Voltage
(between Indoor and Outdoor Units) ....................................................361
Thermistor Resistance Check ..............................................................362
Fan Motor Connector Check ................................................................363
Power Supply Waveform Check...........................................................363
Electronic Expansion Valve Check.......................................................364
Four Way Valve Performance Check ...................................................365
Inverter Unit Refrigerant System Check...............................................365
“Inverter Checker” Check .....................................................................366
Rotation Pulse Check on the Outdoor Unit PCB ..................................367