Interlock In Indoor Unit From Outside; Extended Ic Error; Indoor Fan Motor Error - Toshiba Super MMU-AP0091H Service Manual

Check code name
[L30] / [b6]
(d07 / AI-NET)
Is outside device connected
to connector CN80?
YES
Does outside device correctly operate?
YES
Check cause of the operation.
Check code name
[L31] / [–]
(d07 / AI-NET)
Is there any trouble of
outdoor unit power supply?
NO
Check outdoor I/F P.C. board.
Check code name
[P01] / [11]
(d07 / AI-NET)
* For the models installed with AC fan motor only
Is there no connection error or
disconnection of CN076 connector?
NO
Is not there mechanical lock of fan motor?
NO
Check code name
Interlock in indoor unit
from outside
NO
NO
Check code name

Extended IC error

YES
Check code name

Indoor fan motor error

YES
YES
187
Cause of operation
Outside error was input.
Check indoor P.C. board.
Failure
Check outside device.
Failure
Cause of operation
1. Outdoor unit power error
2. Outdoor I/F P.C. board error
Check power voltage and line.
Check auxiliaty noise, etc.
Cause of operation
1. Cabling error
2. Check fan motor.
Correct cabling circuit for
the connector connection.
Replace fan motor.
Check indoor P.C. board.
Failure
Replace
Replace
Replace