Compressor Position Detective Circuit Error; Other Indoor Error - Toshiba Super MMU-AP0091H Service Manual

Check code name
[P29] / [16]
(d07 / 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 name
[P31] / [47]
(d07 / 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)
203
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
Compressor error
Compressor error
Cause of operation
Other indoor unit in the group is abnormal.
Replace
Replace
Replace