Dc Fan Lock - Daikin FTX20K(2)V1B Service Manual

SiBE041525F

4.12 DC Fan Lock

E7
Error Code
An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC.
Method of Error
Detection
 The fan does not start in 15 ~ 30 seconds (depending on the model) even when the fan
Error Decision
Conditions
 If the error repeats, the system is shut down.
 Reset condition: Continuous run for about 11 minutes without any other error
 Disconnection of the fan motor
Supposed
 Foreign matter stuck in the fan
Causes
 Defective fan motor
 Defective outdoor unit PCB
Troubleshooting
Check No.16
Refer to P.85
 FU2
Service Diagnosis
motor is running.
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Fan motor connector
disconnected?
NO
Foreign matter in or
around the fan?
NO
Turn on the power.
Rotate the fan.
Fan rotates
smoothly?
YES
Check No. 16
Check the rotation pulse input on
the outdoor unit PCB (main PCB).
Pulse signal generated?
YES
YES
YES
NO
NO
Is the fuse () for the
fan motor blown?
YES
Troubleshooting
Turn off the power and
reconnect the connector.
Remove the foreign matter.
Replace the outdoor fan
motor.
NO
Replace the outdoor fan
motor.
Replace the fuse.
Replace the outdoor unit
PCB (main PCB).
(R21669)
64