Error Codes and Description SiBE18-821_C
350 Troubleshooting
3. Error Codes and Description
Error code Description Reference page
RA Indoor
Unit
SA Indoor
Unit
BP Unit Outdoor
Unit
Indoor
Unit
A1 Indoor unit PCB abnormality 352 363 — —
A3 Drain level control system abnormality — 364 — —
A5 Freeze-up protection control or heating peak-cut
control
353 — — —
A6 Fan motor or related abnormality 355, 356 366 — —
A7 Swing motor look — 367 — —
A9 Electronic expansion valve abnormality — — 376 —
AF Drain system abnormality — 368 — —
C4 Thermistor or related abnormality 358 369 — —
C5 Thermistor or related abnormality — 370 — —
C7 Front panel open / close fault 359 — — —
C9 Thermistor or related abnormality 358 371 — —
CJ Remote controller thermistor abnormality — 372 — —
Outdoor
Unit
E1 Outdoor unit PCB abnormality — — — 383
E2 BP unit PCB abnormality — — 377 —
E3 Actuation of high pressure switch — — — 384
E4 Actuation of low pressure switch — — — 386
E5 Compressor motor lock — — — 388
E7 Outdoor fan motor abnormality — — — 389
E9 Moving part of electronic expansion valve (Y1E, Y3E)
abnormality
———390
F3 Discharge pipe temperature abnormality — — — 392
F6 Refrigerant overcharged — — — 393
H9 Outdoor temperature thermistor (R1T) abnormality — — — 394
J0 BP liquid or gas pipe thermistor abnormality — — 378 —
J3 Discharge pipe thermistor (R2T) abnormality — — — 395
J5 Suction pipe thermistor (R3T, R5T) abnormality — — — 396
J6 Outdoor heat exchanger thermistor (R4T)
abnormality
———397
J7 Outdoor liquid pipe thermistor (R7T) abnormality — — — 398
J9 Subcooling heat exchanger gas pipe thermistor
(R6T) abnormality
———399
JA High pressure sensor abnormality — — — 400
JC Low pressure sensor abnormality — — — 401
L1 Outdoor unit PCB abnormality — — — 402
L4 Radiation fin temperature rise — — — 403
L5 Inverter compressor abnormality — — — 404
L8 Inverter current abnormality — — — 405
L9 Inverter start-up error — — — 406
P1 High voltage of capacitor in main inverter circuit — — — 407
P4 Radiation fin thermistor abnormality — — — 408
System U0 Low pressure drop due to refrigerant shortage or
electronic expansion valve abnormality
———409
U2 Power supply insufficient or instantaneous failure — — — 411
U3 Check operation is not conducted. — — — 412
U4 Transmission error between indoor unit and BP unit — — 379 —
U5 Transmission error between remote controller and
indoor unit
— 373 — 413
U8 Transmission error between main and sub remote
controllers
— 374 — 414
U9 Transmission error between indoor unit and outdoor
unit in the same system
———415
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