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2-12. E: 57. Damper error (Damper(Open/Close) simultaneous
detection limit switch error) (Indoor unit)
Indicator
Indoor unit
Indoor unit main PCB
Detective actuator
Limit switch
Forecast of cause
Check point 1. Check limit switch
•
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 point 2. Check connector (CN18)/wire
Check loose contact of CN18/shorted wire (pinched wire).
-> Replace limit switch if the wire is abnormal
Check point 3. Replace main PCB
If Check Point 1, 2 do not improve the symptom, change main PCB.
2-12. E: 57. Damper error (Damper(Open/Close) simultaneous detection limit switch
error) (Indoor unit)
Operation indicator
Timer indicator
Economy indicator
Error code
When the limit switch detects open and close at the
simultaneous.
↓
↓
↓
End
- (03-15) -
5 time flash
7 time flash
Continuous flash
E: 57
Limit switch failure
Shorted connector/wire
Controller PCB failure
2. Troubleshooting with error code
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