Outdoor Unit Fan Motor Error - Fujitsu AS G18KMTA Series Service Instruction

Trouble shooting 22
OUTDOOR UNIT Error Method:

Outdoor unit fan motor error

Detective Actuators:
Outdoor unit Main PCB
Outdoor unit fan motor
Forecast of Cause:
1.Fan rotation 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.
OK
Check Point 2 : Check ambient temp. around motor
Check excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation.
OK
Check Point 3 : Check Outdoor unit fan motor
Check Outdoor unit fan motor. (PARTS INFORMATION 5)
>>If Outdoor Fan Motor is abnormal, replace Outdoor fan motor and Main PCB.
OK
Check Point 4 : Check Output Voltage of Main PCB
Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)
RED
1 1
2 2
3 3
BLACK
CN650
4 4
WHITE
5 5
YELLOW
6 6
BROWN
7 7
If the voltage is not correct, replace Main PCB.
Indicate or Display:
Outdoor Unit : LED 5sec ON/ 5sec OFF
Indoor Unit
ERROR CODE : [E : 97]
Detective details:
1 When outdoor fan rotation speed is less than 100rpm in 20 seconds
after fan motor starts, fan motor stops.
2 After fan motor restarts, if the same operation within 60sec is
repeated 3 times in a row, compressor and fan motor stops.
1
3 If and
permanently.
2. Motor protection by surrounding temperature rise
FAN MOTOR
Lead wire
FM
Red - Black
White - Black
02-31
: Operation lamp: 9 times Flash, Timer lamp: 7 times Flash
Economy lamp: Continuous flash.
2
repeats 5 times in a row, compressor and fan motor stops
280V (AC220V-10%) ~ 373V (AC240+10%)
3. Main PCB failure
DC voltage
15 1.5V
DC