1. Limit switch failure 2. Shorted connector/ wire 3. Damper faulure 4. Controller PCB failure
Test 2 : Check Connector (CN18) / Wire
Test 1 : Check Limit switch
Test 4 : Replace Controller PCB
OK
OK
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
Test 3 : Check Damper
OK
>>Replace Damper if the damper is abnormal
If Test 1 - 3 do not improve the symptom, change Controller PCB.
Check the obstruction of damper movement.
Check the damper movement.
Trouble shooting 12-1
INDOOR UNIT Error Method:
Damper Eror
(Damper (open/close) detection limit switch error)
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 close though the damper open.
(Upper and lower air flow)
Detective Actuators:
Detective details:
Indicate of Display:
Forecast of Cause:
02-16
Indoor Unit
Outdoor Unit
Operation lamp : 5 time Flash
ERROR CODE : [E : 57]
Timer lamp: 7 time Flash
Monitor
ABCDEF
: Light ON : Light OFF n : n time blinking
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