Error Codes and Description SiUS181631EA
194 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
196 207 — —
A3 Drain level control system abnormality
— 208 — —
A5 Freeze-up protection control/heating peak-cut control
198 — — —
A6 Indoor fan motor or related abnormality
199, 201 209 — —
A9 Electronic expansion valve abnormality
——219—
AF Humidifier or Related abnormality
— 211 — —
C4 Indoor heat exchanger thermistor 1 (liquid pipe) or
related abnormality
203 212 — —
C5 Indoor heat exchanger thermistor 2 or related
abnormality
— 212 — —
C7 Front panel open/close fault
204 — — —
C9 Room temperature thermistor or related abnormality
203 212 — —
CE Presence sensor or floor sensor abnormality
— 213 — —
CJ Remote controller thermistor abnormality
— 214 — —
Outdoor
Unit
E1 Outdoor unit PCB abnormality
———226
E2 Branch provider (BP) unit PCB abnormality
——220—
E3 Actuation of high pressure switch
———227
E4 Actuation of low pressure sensor
———229
E5 Compressor motor lock
———231
E7 Outdoor fan motor abnormality
———232
E9 Moving part of electronic expansion valve (Y1E, Y3E)
abnormality
———233
F3 Discharge pipe temperature abnormality
———235
F6 Refrigerant overcharged
———236
H9 Outdoor temperature thermistor (R1T) abnormality
———237
J0 Branch provider (BP) liquid or gas pipe thermistor
abnormality
——221—
J3 Discharge pipe thermistor (R2T) abnormality
———238
J5 Suction pipe thermistor (R3T, R5T) abnormality
———239
J6 Outdoor heat exchanger thermistor (R4T) abnormality
———240
J7 Outdoor liquid pipe thermistor (R7T) abnormality
———241
J9 Subcooling heat exchanger gas pipe thermistor (R6T)
abnormality
———242
JA High pressure sensor abnormality
———243
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