Toshiba MMD-AP0071SH-C Service Manual page 106

Check code name Check code name
[P26] / [14] G-Tr short-circuit protection error
(d07 / AI-NET)
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
NO
Is power voltage of outdoor unit normal?
YES
NO
Is wire connector connection
on IPDU P.C. board normal?
YES
NO
Is compressor normal?
YES
NO
Is smoothing condenser normal?
(1500µF, 350V)
YES
Replace IPDU P.C. board.
Cause of operation
1. Outdoor unit power error
2. IPDU error/Cable connection error
3. Compressor error
4. IPDU P.C. board error
Correct power line.
Correct connection
of wire connector.
Replace compressor.
Check capacity coming-out/
external appearance.
Check code name Check code name
[P29] / [16] Compressor position
detective circuit error
(d07 / AI-NET)
Sub-code: 01: Compressor 1 side 02: Compressor 2 side
NO
Are connector connection
and wiring normal?
YES
YES
Is not grounded?
NO
YES
Is not winding shorted?
(Is winding resistance 0.1 to 0.3 ?)
NO
YES
Is not winding opened?
NO
Check IPDU P.C. board.
Failure Replace
Check code name Check code name
[P31] / [47] Other indoor error
(Group follower unit error)
(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.
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.