Outdoor Fan Pcb Abnormality - Daikin VRV EMERION RXYQ-AATJA Service Manual

Troubleshooting by Error Code

3.46 Outdoor Fan PCB Abnormality

Applicable
All outdoor unit models
Models
H7
Error Code
Method of Error Detect with current sensor value.
Detection
Error Decision When the current sensor shows abnormality.
Conditions
Supposed Defective fan PCB
Causes
Troubleshooting
319
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check for fan PCB applicable to the error code H7 while in
monitor mode.
H7-21/23: Fan PCB (M1F) Master / Sub
H7-22/24: Fan PCB (M2F) Master / Sub
Turn OFF the power supply
and wait for 10 minutes.
Is the
connector of relevant
fan motor normally
connected?
Resistance
between U, V, W
phases of the fan motor
power supply cable has lost
balance or short circuit is
caused between U,
V, W phases.
NO
YES
NO
YES
SiUS342303E
Properly connect the connector.
Replace the relevant fan motor.
(M1F, M2F)
Replace the fan PCB.
Part 6 Service Diagnosis