Outdoor Fan Motor Signal Abnormality - Daikin VRV S RXQ4/5ARV1 Service Manual

SiAF332111E

5.36 Outdoor Fan Motor Signal Abnormality

Applicable RXQ4/5AR
Models
H7
Error Code
Method of Error Detection of abnormal signal from fan motor
Detection
Error Decision
In case of detection of abnormal signal at starting fan motor
Conditions
Supposed
 Abnormal fan motor signal (defective circuit)
Causes  Broken, short circuited or disconnection connector of fan motor connection cable
 Defective outdoor unit main PCB
Troubleshooting
Reference
CHECK 17 Refer to page 357.
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the fan motor corresponding to the error code H7 in
the monitor mode.
Turn the power supply OFF.
Is the signal wire
connector for the corresponding
fan motor is normal?
CHECK 17
Check the connector
of the fan motor.
Is the
resistance of the fan
motor lead wire between Vcc
and UVW and between GND
and UVW are
balanced?
NO
YES
NO
YES
Troubleshooting by Error Code
Ensure the correct connection.
Replace the fan motor.
Replace the outdoor unit main
PCB.
259