02-32
Detective Actuators:
Detective details:
Forecast of Cause :
Indoor unit Controller PCB Circuit
Limit switch
When the limit switch detects open and close at the simultaneous.
1. Limit switch failure 2. Shorted connector/ wire 3. Controller PCB failure
Check Point 2 :
Check Point 2 : Check Connector (CN18) / Wire
Check Point 1 : Check Limit switch
Check Point 3 : 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
OK
OK
If Check Point 1 & 2 do not improve the symptom, change Controller PCB.
Trouble shooting 17
INDOOR UNIT Error Method:
Damper(OPEN/CLOSE) Simultaneous
Detection Limit Switch Error
Indicate or Display:
Indoor Unit
Outdoor Unit
Operation lamp : 5 time Flash
ERROR CODE : [E : 57]
Timer lamp
: 7 time Flash
: Light ON
: Light OFF
n : n time blinking
Monitor
A
B
C
D
E
F
5
15
