1
4
7
Check code
[–] / [97]
(Current code / AI-NET)
Check code name
AI-NET communication line error
Cause of operation
AI-NET communication line error
Can be other indoor units
normally controlled from
AI-NET central remote controller,
or is the operation status
of indoor unit reflected?
Can be the
indoor unit normally
controlled from the main
remote controller?
Is the network
address changed by main
remote controller?
Are remote controller
communication lines
(A, B) normal?
Correct communication line.
Correct connection of connectors.
Correct power line.
Turn on the main power supply.
Clear check code.
Eliminate noise, etc.
Check power transformer of the
network adaptor P.C. board (MCC-1401).
Failure
→
Replace
Check central controller.
Failure
→
Replace
Check indoor P.C. board.
Failure
→
Replace
Did a block-out occur?
Is there no noise etc.?
Does the network adaptor
P.C. board LED (D01) turn on?
Is there no connection error
of power line?
Is not main power supply
turned on?
Are AI-NET X and Y
communication lines normal?
Are connections of CN01,
CN02, and CN03 connectors
on network adaptor P.C. board
(MCC-1401) and CN309
and CN41 connectors on
indoor P.C. board normal?
Check connection of A, B terminal.
Correct communication line of remote controller.
Unavailable (Others are same.)
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
FILE NO. SVM-1
40
77
