Daikin VRV S RXQ4/5ARV1, Service Manual

Page: 265 / 377

SiAF332111E Troubleshooting by Error Code
Part 6 Service Diagnosis 259
Reference
5.36 Outdoor Fan Motor Signal Abnormality
Applicable
Models
RXQ4/5AR
Error Code
H7
Method of Error
Detection
Detection of abnormal signal from fan motor
Error Decision
Conditions
In case of detection of abnormal signal at starting fan motor
Supposed
Causes
 Abnormal fan motor signal (defective circuit)
 Broken, short circuited or disconnection connector of fan motor connection cable
 Defective outdoor unit main PCB
Troubleshooting
CHECK 17 Refer to page 357.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Ensure the correct connection.
NO
YES
Is the signal wire
connector for the corresponding
fan motor is normal?
Replace the fan motor.
Replace the outdoor unit main
PCB.
NO
YES
Is the
resistance of the fan
motor lead wire between Vcc
and UVW and between GND
and UVW are
balanced?
Turn the power supply OFF.
Check the fan motor corresponding to the error code H7 in
the monitor mode.
Check the connector
of the fan motor.
CHECK 17