Toshiba SUPER MMK-AP0073H (IN) Service Manual page 126

Check code
[P29] / [16]
(Current code / AI-NET)
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
Are connector connection
and wiring normal?
YES
Is not grounded?
NO
Is not winding shorted?
(Is winding resistance 0.6 to 1.2W?)
NO
Is not winding opened?
NO
Check IPDU P.C. board.
Failure → Replace
Check code
[P31] / [47]
(Current code / AI-NET)
When the header unit of the group detected [E03, L03, L07, L08 error], the follower unit of the group displays
[P31] error and stops. There are no check code display and alarm record of the main remote controller.
Check code name
Compressor position
detective circuit error
NO
YES
YES
YES
Check code name
Other indoor error
(Group follower unit error)
126
Cause of operation
1. Cable/connector connection error
2. Compressor error
3. IPDU P.C. board error
Check and correct circuit and cables
such as cabling to compressor, etc.
Compressor error → Replace
Compressor error → Replace
Compressor error → Replace
Cause of operation
Other indoor unit in the group is abnormal.