Toshiba RAV-HM1601CTP Series - Troubleshooting Optional Parts; [E11 trouble]

YES
Replace Application control kit.
(TCB-PCUC2E)
[E11 trouble]
YES
NO
NO
NO
YES
Is the
connection for
the UART
communication connector
(Indoor P.C. board CN521
red/Application control
kit CN1 red)
normal?
Is connector
lead wire for the UART
communication
cut?
Does Red
LED (LD1) on
the Application control
kit light up?
Red LED (LD1)
on the Application
control kit repeatedly lights
up and flashes on
and off.
Red LED (LD1)
of the Application
control kit blinks.
NO
NO
Replace Application control kit.
(TCB-PCUC2E)
YES
Check the operating status.
Repair of connector
connection.
YES
Replacement of the
connector’s lead wire.
Replace indoor P.C. board.
(MCC-1643)
Option parts : Application control kit (TCB-PCUC2E)
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