Toshiba RAV-SM802UT-E User Manual

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Correct communication line.

Correct connection of connector.

Correct power cable.

Turn on the source power supply.

Clear the check code.

Eliminate noise, etc.

NO

NO

NO

YES

YES

YES

YES

NO

Is U3, U4 communication line normal?

Is A, B communication line normal?

Is there no connection error of power line?

Is there no noise source, etc.?

Is not power of source power supply turned on?

Did a power failure occur?

NO
(Same as others)

Are connections between connectors

CN51 of connection interface P.C. board

and connectors CN51 of indoor P.C. board

normal?

Check connections of A, B terminal blocks.
Correct communication line of remote controller.

Check central controller.
Defect 

→

 Replace

Check indoor P.C. board (MCC-1402).
Defect 

→

 Replace

Check connection interface P.C. board.
Defect 

→

 Replace

Can handy remote controller control

normally other indoor units?

Can central remote controller

control normally other indoor units?

Is handling of central remote controller reflected

on the operation status of indoor unit?

YES

YES

YES

NO

NO

NO

NO

YES

YES