Si04-306 Troubleshooting
Service Diagnosis 103
4.9 DC Fan Lock
Remote
Controller
Display
E7
Method of
Malfunction
Detection
A fan motor or related error is detected by checking the high-voltage fan motor rpm being
detected by the hall IC.
Malfunction
Decision
Conditions
The fan does not start in 30 seconds even when the fan motor is running.
The system will be shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Supposed
Causes
Fan motor breakdown
Harness or connector disconnected between fan motor and PCB or in poor contact
Foreign matters stuck in the fan
Troubleshooting
Check No.15
Refer to P.133
Turn off the power and
reconnect the connector.
Remove.
Replace the outdoor unit
fan motor.
Replace the outdoor unit
PCB.
(R2843)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Fan motor connector
disconnected?
YES
YES
NO
YES
NO
Pulse signal inputted?
NO
Foreign matters in or
around the fan?
Get started.
Check No. 15
Check the outdoor unit PCB rpm
pulse input.
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