Toshiba RAV-SM802UT-E User Manual

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Correct cable connection

Correct central control network address.

Check operation cause.

Check outside devices.
Defect 

→

 Replace

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

→

 Replace

Check central controller (including connection interface) indoor P.C. board.
Defect 

→

 Replace.

NO

YES

NO

NO

YES

NO

YES

YES

Are not multiple same central

control network addresses connected?

Do outside devices normally operate?

Are outside devices of connector CN80 connected?

Are characteristics of TA sensor resistance value normal?

Are cable connections to communication line U3, U4 normal?

Correct connection of connector.

Replace TA sensor.

* Refer to Characteristics-1. 

Correct connection of connector.

Check drain pipe, etc.

Check and correct cabling/wiring.

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

→

 Replace

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

→

 Replace

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

→

 Replace

Replace drain pump.
Check cabling.

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

Is connection of float switch connector

(Indoor control P.C. board CN34) normal?

Does float switch

operate?

Is circuit

cabling normal?

Does drain pump

operate?

Is power of drain

pump turned on?

NO

YES

Is connection of TA sensor connector

(indoor P.C. board CN104) normal?

NO

YES