Detective Actuators:
Detective details:
Forecast of Cause :
Indoor unit Controller PCB
Limit switch
Damper
When limit switch were not able to detect the close though the damper close.
(Upper air flow)
When limit switch were not able to detect the open though the damper open.
(Upper & Lower air flow)
1. Limit switch failure 2. Shorted connector/ wire 3. Damper faulure
4. Controller PCB failure
Check Point 2 : Check Point 2 : Check Connector (CN18) / Wire
Check Point 1 : Check Limit switch
Check Point 4 : Replace Controller PCB
OKOK
OKOK
Check operation of limit switch. (any blocking by dust, etc.)
Remove Limit switch and check ON/OFF switching operation by using a meter.
>>If Limit switch is detective, replace it.
Check loose contact of CN18 /shorted wire (pinched wire).
>>Replace Limit switch if the wire is abnormal
Check Point 2 : Check Point 3 : Check Damper
OKOK
>>Replace Damper if the damper is abnormal
If Check Point 1 3 do not improve the symptom, change Controller PCB.
Check the obstruction of damper movement.
Check the damper movement.
Trouble shooting 11-1
INDOOR UNIT Error Method:
Damper error
(Damper(Open/Close) detection Limit switch error)
02-14
Indicate or Display:
Refer to error code table.
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