Duplicated Master Remote Controller; Communication Error In Indoor P.c. Board A’ssy; Automatic Address Start Error - Toshiba Super MMU-AP0091H Service Manual

Check code
[E09] / [99]
(d07 / AI-NET)
Are two remote controllers set up
as two master remote controllers?
NO
Check code
[E10] / [CF]
(d07 / AI-NET)
Is there any trouble on power line?
NO
Check code
[E12] / [42]
(d07 / AI-NET)
Sub-code: 01: Communication between indoor and outdoor 02: Communication between outdoor units
Are U1, U2, U3, and U4
connectors connected?
YES
Disconnect connector connection
of U1, U2, U3, and U4.
Check code name
Duplicated master
remote controller
YES
Check code name
Communication error
in indoor P.C. board A'ssy
YES
Check code name

Automatic address start error

NO
Turn on power of
outdoor unit again.
155
Cause of operation
Setup of master remote controller is dupli-
cated.
Correct setup of remote controllers as a master:
a other. (Remote controller address connector)
Check remote controller P.C. board.
Failure Replace
Cause of operation
Indoor P.C. board error A'ssy failure
Check power voltage on line.
Eliminate noise, etc.
Check indoor control P.C. board.
Failure Replace
Cause of operation
1. When indoor automatic address started,
other refrigerant circuit system was setting
automatic address.
2. When outdoor automatic address started,
the indoor automatic address was being
set. (Sub-code: 02)
Set up address again.
(Refer to "Address setup procedure".)