Manual Auto Switch Error - Fujitsu AOYG45LAT8 User Manual

Trouble shooting 9
INDOOR UNIT Error Method:

Manual Auto Switch Error

Detective Actuators:
Indoor Unit Controller PCB
Indicator PCB
Manual Auto Switch
Forecast of Cause :
1. Manual Auto Switch failure
Check Point 1 : Check the Manual Auto Switch
Check if Manual Auto Switch is kept pressed.
Check ON/OFF switching operation by using a meter.
>> If Manual Auto Switch is disabled (on/off switching), replace it.
OK OK
Check Point 2 : Replace Controller PCB and Indicator PCB
If Check Point 1 do not improve the symptom, replace Controller PCB and Indicator PCB
and execute the check operation again.
Indicate or Display:
Outdoor Unit : No Display
Indoor Unit : Operation LED 3 times Flash, Timer LED 2 Times Flash,
Economy LED Continuous Flash.
Error Code : 3 5
Detective details:
When the Manual Auto Switch becomes ON for consecutive 30 or
more seconds.
2. Controller PCB and Indicator PCB failure
02-25