SiBE04-101
Troubleshooting
Service Diagnosis
105
4.17DC Fan Seizing
Remote Controller
Display
E7
Outdoor unit LED
Display
A
5
1
4
2
4
3
4
4
4
Method of
Malfunction
Detection
The number of revolutions detected by the detection circuit during fan motor operation is used to detect fan
motor abnormalities.
Malfunction
Decision
Conditions
When the fan does not operate within 30 seconds after fan motor operation conditions are met.
When the rotation detection connector is disconnected.
When the system shuts down after 16 times.
Supposed Causes
Faulty fan motor
Disconnected or faulty harness between fan motor and PCB
Foreign item blocking fan operation
Cancellation condition: 8 continuous minutes of operation (normal)
Troubleshooting
Check No.27
Refer to P.126
Turn the power supply off.
YES
Remove obstacles.
Replace fan motor.
Could be temporary causes
including noise, etc.
Replace fan motor.
Replace PC board.
Can the propeller
be turned by hands?
Is the motor position
signal output?
(R1177)
NO
Check No. 27
Outdoor unit PCB rotation pulse
input check.
YES
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
Is there any obstacles?
NO
Is this
phenomenon
re-generated when turning
the power supply
back on?
YES
NO
SiBE04-101.book Page 105 Monday, October 15, 2001 3:08 PM
