Indoor Fan Motor Lock, Overload - Daikin VRV Aurora RXLQ-TATJU Series Service Manual

Troubleshooting by Error Code
3.6

Indoor Fan Motor Lock, Overload

Applicable
FXFQ-T, FXFQ-P, FXZQ-TA, FXZQ-TB, FXUQ-P, FXUQ-PA, FXEQ-P, FXSQ05-48TA,
Models
FXSQ05-48TB, FXMQ07-12PB, FXMQ15-24TB, FXAQ-P
A6
Error Code
Method of Error
Abnormal fan revolutions are detected by a signal output from the fan motor.
Detection
Error Decision
When the fan revolutions do not increase
Conditions
Supposed
 Broken wires in, short circuit of, or disconnection of connectors from the fan motor harness
Causes  Defective fan motor
 Abnormal signal output from the fan motor (defective circuit)
 Defective indoor unit control PCB
 Instantaneous disturbance in the power supply voltage
 Fan motor lock
 The fan does not rotate due to foreign matter blocking the fan.
 Disconnection of the connector between the indoor unit control PCB (A1P) and the fan PCB
 Blowout of the fuse connected between the indoor unit PCB and the fan motor harness
235
(Broken wires or defective insulation)
(Due to motor or external causes)
(A2P) (FXSQ05-48TA, FXSQ05-48TB, FXMQ07-12PB, FXMQ15-24TB only)
SiUS341802EC
Part 6 Service Diagnosis