Si10-417
Troubleshooting
Service Diagnosis
49
5.2.11 DC Fan Lock
Remote
Controller
Display
E7
Outdoor
Unit LED
Display
A
5
1
4
2
4
3
4
4
4
Method of
Malfunction
Detection
A fan motor line 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
Trouble
shooting
Check
No.15-1·2
Refer to
P.165
Turn off the power and
reconnect the
connector.
Remove.
Replace the outdoor
unit fan motor.
Replace the outdoor
unit PCB.
(R2843)
Fan motor
connector disconnected?
YES
YES
NO
YES
NO
Pulse signal
inputted?
NO
Foreign
matters in or around
the fan?
Get started.
Check No. 15-1·2
Check the outdoor unit PCB
rpm pulse input.
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Si10-417.fm Page 49 Wednesday, September 22, 2004 6:38 PM
