1. Limit switch failure 2. Shorted connector/ wire 3. Controller PCB failure
Test 2 : Check Connector (CN18) / Wire
Test 1 : Check Limit switch
Test 3 : Replace Controller PCB
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
OK
If Test 1 - 2 do not improve the symptom, change Controller PCB.
Trouble shooting 12-2
INDOOR UNIT Error Method:
Damper Error
(Damper (open/colse) simultaneous detection
Indoor unit controller PCB
Limit switch
When the limit switch detects open and close at the simultaneous.
Detective Actuators:
Detective details:
Indicate of Display:
limit switch error)
Forecast of Cause:
02-17
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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