Troubleshooting by Error Code
3.8.2 Indoor Fan Motor Abnormality (FXSQ54TB, FXMQ15-54PB,
FXMQ30-54TB Models)
Applicable
FXSQ54TB, FXMQ15-54PB, FXMQ30-54TB
Models
A6
Error Code
Method of Error
Error from the current flow on the fan PCB
Error from the rotation speed of the fan motor in operation
Detection
Error from the position signal of the fan motor
Error from the current flow on the fan PCB when the fan motor starting operation
Error Decision
An overcurrent flows.
Conditions
The rotation speed is less than a certain level for 6 seconds.
A position error in the fan rotor continues for 5 seconds or more.
Supposed
Clogging of a foreign matter
Causes
Disconnection of the fan motor connectors (X1A and X2A)
Disconnection of the connectors between the indoor unit control PCB (A1P) and fan PCB (A2P)
Defective fan PCB (A2P)
Defective fan motor
257
SiUS342303E
Part 6 Service Diagnosis