Daikin FDMQ-R Series Service Manual

SiUS091601EA Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis 158
Reference
7.4 DC Fan Lock
Error Code E7
Method of Error
Detection
An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC.
Error Decision
Conditions
 The fan does not start in 15 ~ 30 seconds even when the fan motor is running.
 If the error repeats, the system is shut down.
 Reset condition: Continuous run for about 11 minutes without any other error
Supposed
Causes
 Disconnection of the fan motor
 Foreign matter stuck in the fan
 Defective fan motor
 Defective outdoor unit PCB
Troubleshooting
Check No.16 Refer to P.189
(R21669)
Caution
YES
YES
NO
YES
NO
NO
YES
NO
NO
Turn on the power.
Rotate the fan.
YES
Check No. 16
Check the rotation pulse input on
the outdoor unit PCB (main PCB).
Turn off the power and
reconnect the connector.
Remove the foreign
matters.
Replace the outdoor fan
motor.
Replace the fuse.
Replace the outdoor unit
PCB (main PCB).
Fan motor
connector disconnected?
Foreign matters
in or around the fan?
Replace the outdoor fan
motor.
Fan rotates
smoothly?
Pulse signal
generated?
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the fuse (#) for the
fan motor blown?
# FU2

Daikin FDMQ-R Series Specifications

General

Brand	Daikin
Model	FDMQ-R Series
Category	Air Conditioner
Language	English