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Check code
[P26] / [14]
(TCC-L / AI-NET)
Check code name
G-Tr short-circuit protection error
Cause of operation
1. Outdoor unit power error
2. IPDU error/Cable connection error
3. Compressor error
4. IPDU P.C. board error
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
Replace IPDU P.C. board.
Is compressor operation normal?
Is wire connector connection
on the IPDU P.C. board normal?
Is the power supply voltage
to the outdoor unit normal?
Is smoothing condenser normal?
(1500µF, 350V)
Correct power line.
Replace compressor.
Check capacity valve
external appearance.
Correct the wire connections.
YES
YES
YES
YES
NO
NO
NO
NO
Check code
[P29] / [16]
(TCC-L / AI-NET)
Check code name
Compressor position
detective circuit error
Cause of operation
1. Wire connection error.
2. Compressor error
3. IPDU P.C. board error
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
Check code
[P31] / [47]
(TCC-L / AI-NET)
Check code name
Other indoor error
(Group follower unit error)
Cause of operation
Other indoor unit in the group has a error.
When the header unit of the group detects [E03, L03, L07, L08 error], the follower unit(s) in the group display [P31]
error and stop. There are no check code displays or alarm record on the main remote controller.
Is it grounded?
Is the winding open circuit?
Are the connectors and wiring
to the compressor normal?
Is there a winding short?
(Is winding resistance 0.1 to 0.3 ?)
Check IPDU P.C. board.
Failure Replace
Compressor error Replace
Compressor error Replace
Compressor error Replace
Check and correct circuit and
wires, i.e. to the compressor, etc.
YES
YES
YES
YES
NO
NO
NO
NO