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Code Indication on Remote Controller SiUS121827E
162 Part 6 Service Diagnosis
Note
4. Code Indication on Remote Controller
4.1 RA Indoor Unit
4.2 SA Indoor Unit
When there is a possibility of open phase power supply, also check power supply.
Error
Codes
Description
Reference
Page
00 Normal condition —
A1 Indoor unit PCB abnormality 164
A5 Freeze-up protection control/heating peak-cut control 166
A6
Indoor fan motor or related
abnormality
DC motor
(FTXR, CTXG, CTXS, FTXS, FVXS series)
167
AC motor (FDXS, CDXS series) 170
C4 Indoor heat exchanger thermistor or related abnormality 172
C7 Front panel open/close fault (FTXR, CTXG series) 173
C9 Room temperature thermistor or related abnormality 172
U4 Signal transmission error (between indoor unit and outdoor unit) 174
UA Mismatching of indoor unit and outdoor unit 177
Error
Codes
Description
Reference
Page
00 Normal condition —
A1 Indoor unit PCB abnormality 178
A3 Drain level control system abnormality 179
A6
Indoor fan motor (DC motor) or related abnormality
(See the Note below)
180, 182
A8 Indoor fan PCB abnormality 185
AF Humidifier or related abnormality 186
C4 Indoor heat exchanger thermistor 1 or related abnormality 187
C5 Indoor heat exchanger thermistor 2 or related abnormality 187
C9 Room temperature thermistor or related abnormality 187
CE Presence sensor or floor sensor abnormality 188
CJ Remote controller thermistor abnormality 189
U4 Signal transmission error (between indoor unit and outdoor unit) 190
U5 Signal transmission error (between indoor unit and remote controller) 192
U8
Signal transmission error (between MAIN remote controller and SUB
remote controller)
193
UA Mismatching of indoor unit and outdoor unit 194
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