Toshiba SUPER MMK-AP0073H (IN) Service Manual page 111

Check code
[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
[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
111
Cause of operation
Outside error was input.
Check indoor P.C. board.
Failure → Replace
Check outside device.
Failure → Replace
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.