Fujitsu AUXG18KVLA, Service Manual

Page: 110 / 222

2-31. E: 97. Outdoor unit fan motor error (Outdoor unit)
Indicator
Wired remote
controller
Error code E: 97
Detective actuator Outdoor unit
Inverter PCB 1. When outdoor fan rotation speed is less than 100
rpm in 20 seconds after fan motor starts, fan motor
stops.
2. After fan motor restarts, if the same operation within
60 seconds is repeated 3 times in a row,
compressor and fan motor stops.
3. If 1. and 2. repeats 5 times in a row, compressor
and fan motor stops permanently.
Main PCB
Fan motor
Forecast of cause
Fan rotation failure
Motor protection by surrounding temperature rise
Inverter PCB failure
Main PCB failure
Outdoor unit fan motor
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 point 2. Check ambient temperature 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.
↓
Check point 3. Check outdoor unit fan motor
Check outdoor unit fan motor. (Refer to outdoor unit fan motor in "Service parts information" on
page 03-57.)
→ If outdoor unit fan motor is abnormal, replace outdoor unit fan motor and main PCB.
↓
2-31. E: 97. Outdoor unit fan motor error (Outdoor unit)
- (03-38) -
2. Troubleshooting with error code
TROUBLESHOOTING TROUBLESHOOTING