Fujitsu AU G12LVLB Series Service Instruction page 52

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.
Indicate or Display:
Outdoor Unit : No indication
Indoor Unit : Operation lamp: 3 time Flash, Timer lamp: 5 time Flash
Economy lamp : Continuous flash.
ERROR CODE : [E : 35]
Detective details:
When the Manual auto switch becomes ON for consecutive 60 or
more seconds.
2. Controller PCB and Indicator PCB failure
02-19