Indoor Fan Motor Lock, Overload - Daikin VRV EMERION RXYQ-AATJA Service Manual

SiUS342303E
3.7

Indoor Fan Motor Lock, Overload

Applicable
FXFQ-T, FXZQ-TB, FXUQ-PA, FXEQ-P, FXSQ05-48TB, FXMQ07-12PB, FXMQ15-24TB, FXAQ-P
Models
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
Part 6 Service Diagnosis
(Broken wires or defective insulation)
(Due to motor or external causes)
(A2P) (FXSQ05-48TB, FXMQ07-12PB, FXMQ15-24TB only)
Troubleshooting by Error Code
254