1-59
TROUBLESHOOTING
“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 unit No. and alarm code are 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.
In the case of H-Link System, this alarm code is indicated when DSW1 of the outdoor unit PCB and DSW5
of the indoor unit PCB are incorrectly set.
In this case, set correctly DSW1 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 unit No. and alarm code are indicated on the display of the outdoor unit PCB.
This alarm code is indicated when AC 220V or 240V is supplied to voltage *A or *B on PCB1 in the
outdoor unit during inverter compressor stoppage.
Alarm
Code
Abnormality of Picking up Circuit for Protection
(Outdoor Unit)
Alarm
Code
Incorrect Indoor Unit No. Setting
Faulty PCB1
Check wiring connection
of other PCB. *1)
No
No
No
Yes
Yes
PCB1 is normal
Is 220VAC or 240VAC applied *A
during stopping?
Is 220VAC or 240VAC applied *B
during stoppage?
Cause
Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Abnormality of
Picking up Circuit
for Protection
Check voltage supplied
to connectors.
Repair wiring
connections.
Incorrect Connection
Faulty PCB
Replace PCB.
*1): Check wiring system connecting to PCN14 and PCN2 on PCB1.
Power Supply
*A
*B
380-415V/50Hz
Between terminal #3 of PCN14 on PCB1
Between terminal #3 of PCN2 on PCB1
380V/60Hz
and faston terminal "N" on PCB1
and faston terminal "N" on PCB1
220V/60Hz
Between terminal #3 of PCN14 on PCB1
Between terminal #3 of PCN2 on PCB1
and faston terminal "S" on PCB1
and faston terminal "S" on PCB1
