Fujitsu AMUG24LMAS, Service Manual

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03-36
Troubleshooting 26(Continued)
Check Point 3 : Check outdoor unit fan motor
OK
OK
Check Point 1 : Check rotation of fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
Check Outdoor unit fan motor. (Parts information 4)
>>If Outdoor Fan Motor is abnormal, replace Outdoor fan motor and Main PCB.
Check Point 4 : Check output voltage of main PCB
Check outdoor unit circuit diagram and voltage. (Measure at main PCB side connector)
If voltage is not correct, replace main PCB.
Read wire DC voltage
Red - Black
White - Black 15 1.5V
Read wire DC voltage
Red - Black 260V ~ 400V
White - Black 15 1.5V
CN800
1
2
3
4
5
6
7
1
2
3
4
5
6
7
BLACK
WHITE
YELLOW
BROWN
RED
FM
FAN MOTOR
AOU24/30RGLX
Check Point 2 : Check ambient temp. around motor
OK
Check excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation.
CN243
1
2
3
4
5
6
7
1
2
3
4
5
6
7
BLACK
WHITE
YELLOW
BROWN
RED
FM
FAN MOTOR
AOUG36/48LMAS1
260V ~ 400V