Toshiba RAV-SM2802DT-TR, RAV-SM2802DT-E service manual C06 error 1:1 model connection interface, 47

[C06 error] (1:1 model connection interface)

NO

Are U3 and U4 communication lines normal?

YES

Correct communication line.

∗1 NO

Is connection of connector normal?

Correct connection of connector.

YES

∗1

In case of 1:1 model connection interface

1:1 model connection interface (MCC-1440) CN51 and indoor P.C. board CN050.

Are A and B communication lines normal?

YES

Is there no connection error of power supply cable?

NO

Is not the source power supply turned on?

YES

NO
	Check connection of A and B terminal blocks.
	Correct communication line of remote controller.

YES

Correct power wiring.

NO

Turn on the source power supply.

Did a power failure occur?

NO

Is the network address changed from the wired remote controller?

NO

Is there no noise source?

NO

Can the other indoor units

be normally controlled from the central controller? Or is the operation status of indoor unit reflected?

YES

YES

YES

YES

Uncontrolled

(Same to others)

Clear the check code.

Eliminate noise, etc.

Check central controller.

Defect → Replace

Can the indoor unit be normally controlled

from the wired remote controller?

YES

Check the power supply transformer of

1:1 model connection interface (MCC-1440).

Defective → Replace

Uncontrolled
	Check indoor P.C. board (MCC-1403).
	Defect → Replace

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