06-21
Outdoor Unit : No indication
Indoor Unit : Operation LED : 4 times, Timer LED : 2 times
ERROR CODE : [E : 20]
Trouble shooting 17
INDOOR UNIT
INDOOR UNIT Error Method:
Indicate or Display:
Detective Actuators:
Detective details:
Forecast of Cause :
OKOK
Indoor manual auto switch error
Indoor Unit Controller PCB Circuit
Forced auto switch
When the Forced auto switch becomes ON for 30 consecutive seconds.
1. Forced auto switch failure 2.Controller PCB failure
Check Point 1 : Check the Forced auto switch
Check if Forced auto switch is kept pressed.
Check Point 2 : Replace Controller PCB
If Check Point 1 do not improve the symptom, change Controller PCB.
Check ON/OFF switching operation by using a meter.
>>If Forced auto switch is detective, replace it.
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