TROUBLESHOOTING
1-39
“RUN” light flickers and “ALARM” is indicated on the remote control switch.
The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the alarm code is indicated on the display of the outdoor unit PCB.
This alarm code is indicated 3 minutes after power is supplied to the outdoor unit when the indoor
unit No. connected to the outdoor unit is duplicated by setting of RSW.
This alarm code is indicated that it is connected the same indoor unit number in the same refrigerant
cycle.
In the case of H-Link System, this alarm code is indicated when DSW4 of the outdoor unit PCB and DSW5
of the indoor unit PCB are incorrectly set.
In this case, set correctly DSW4 and DSW5 after turning off Main Switch.
“RUN” light flickers and “ALARM” is indicated on the remote control switch.
The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the alarm code is indicated on the display of the outdoor unit PCB.
This alarm code is indicated when AC 220V or 240V is supplied to voltage PCN9#1 and #3 on PCB1
in the outdoor unit during CMC is opened.
Alarm
Code
Abnormality of Picking up Circuit for Protection
(Outdoor Unit)
Alarm
Code
Incorrect Indoor Unit No. Setting
“RUN” light flickers and “ALARM” is indicated on the remote control switch.
The unit No., alarm code and the unit code is alternately indicated on the set temperature section,
and the alarm code is indicated on the display of the outdoor unit PCB.
This alarm code is indicated when the indoor unit does not suit for this outdoor unit.
Alarm
Code
Incorrect Combined Unit between Indoor Unit and Outdoor Unit
Faulty PCB1.
Check wiring connection
except PCB1.
No
Yes
PCB1 is Normal
Is 220VAC or 240VAC
applied PCN9#1 and #3
during stoppage?
Cause
Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Check PCB1 by
self-checking.
(Refer to Item 1.3.1.)
Replace PCB1.Faulty PCB1
+
-
PCN9 PCN8 PCN3
PCN5PCN2PCN10PCN7
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