Fujitsu AOTG36LATT, Service Manual

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Trouble shooting 19
OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause:
Check Point 3 : Check Outdoor unit fan motor
OK
OK
Indicate or Display:
Outdoor unit fan motor error
Outdoor unit Main PCB
Outdoor unit fan motor
1. Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure
4. Outdoor unit fan motor failure
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 5)
>>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 the voltage. (Measure at Main PCB side connector)
If the voltage is not correct, replace Main PCB.
When outdoor fan rotation speed is less than 100rpm in 20 seconds
after fan motor starts, fan motor stops.
After fan motor restarts, if the same operation within 60sec is repeated
3 times in a row, compressor and fan motor stops.
If and repeats 5 times in a row, compressor and fan motor stops
permanently.
Read wire DC voltage
Red - Black
280V (AC220V-10%) ~ 373V (AC240+10%)
White - Black 15 1.5V
02-21
CN800
1
2
3
4
5
6
7
BLACK
WHITE
YELLOW
BROWN or BLUE
RED
FAN MOTOR
1
2
3
4
5
6
7
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.
Outdoor Unit : LED 5sec ON/ 5sec OFF
Indoor Unit : Operation lamp: 9 times Flash, Timer lamp: 7 times Flash
Economy lamp: Continuous flash.
ERROR CODE : [E : 97]
FM