Outdoor Fan Pcb Abnormality - Daikin RXQ12AHR Service Manual

SiAF341904E

5.32 Outdoor Fan PCB Abnormality

Applicable All outdoor unit models
Models
H7
Error Code
Method of Error Detect according to values detected with current sensor.
Detection
Error Decision
When the current sensor is abnormal.
Conditions
Supposed
 Disconnection/Short circuit in fan motor leads or disconnection of connector
Causes  Defective fan PCB (A4P, A7P)
Troubleshooting
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check for fan motor applicable to the error code H7 while in monitor mode.
• Sub code
Fan PCB (A7P): H07-21 (Master), H7-23 (Slave 1), H7-25 (Slave 2)
Fan PCB (A4P): H07-22 (Master), H7-24 (Slave 1), H7-26 (Slave 2)
Turn OFF the power supply
and wait for 10 minutes.
Is
resistance
between Vcc-UVW
and between GND-UVW
of the fan motor lead in
balance?
NO
YES
Troubleshooting by Error Code
Replace the defective fan motor.
Replace the defective fan PCB.
RXQ6-12A: A4P
RXQ14-20A: A4P, A7P
235