Toshiba MMK-AP0072H Service Manual page 93

Check code name
[L30] / [b6]
(Current code / 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] / [–]
(Current code / AI-NET)
Is there any trouble of
outdoor unit power supply?
NO
Check outdoor I/F P.C. board.
Check code name
Interlock in indoor unit
from outside
NO
NO
Check code name
Extended IC error
YES
93
FILE NO. SVM-05052
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.
Replace
Replace