Yes
No
No
No
Yes
No
Yes
Yes
[P29]
[P31]
esuaCedoc kcehC Check code name
esuaCedoc kcehC Check code name
Compressor position detective
circuit trouble
1. Wire/connector connection trouble
2. Compressor trouble
3. A3-IPDU P.C. board trouble
Other indoor trouble
(Group follower unit trouble
Another indoor unit in the group is abnormal.
Sub-code:
01: Compressor 1, 02: Compressor 2
Are connector
connection and wiring
normal?
Is the unit grounded?
Is not winding
shorted? (Is winding
resistance 0.1 to
1.0Ω?)
Is not winding
opened?
Check and correct circuit and
cables such as wiring to
compressor, etc.
Compressor trouble Replace
Compressor trouble Replace
Compressor trouble Replace
Check A3-IPDU P.C. board.
Failure
Replace
When the header unit of the group detected check code [E03], [L03], [L07] or [L08], the follower unit of the group
displays [P31] check code and stops. There are no check code display and alarm record of the main remote controller.
Yes
No
Yes
No
Yes
No
Yes
No
[P26]
CauseCheck code
Check code name
IPM short-circuit protection trouble
1. Outdoor unit power trouble
2. A3-IPDU trouble/Wire connection
trouble
3. Compressor trouble
4. A3-IPDU P.C. board trouble
Is power voltage
of outdoor unit
normal?
Is wire connector
connection on
INV P.C. board
normal?
Is there no fusing
of AC50A
fuse?
Is compressor
normal?
Correct power line.
Correct connection of wire
connector.
Replace A3-IPDU P.C.
board.
Replace compressor.
Replace A3-IPDU P.C. board.
Sub-code:
01: Compressor 1, 02: Compressor 2
− 194 −
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