Toshiba RAS-3M26U2AVG-E Service Manual page 78

Check Outdoor
code LED display
 *
[1C]
(Continued)
*

*
*
 
*

* 
*
* ** * 

*
 * ** * 
:ON ( *:3 sec ON / 0.5 sec OFF) :OFF
(Item without special mention indicates part of outdoor unit.)
[A room gas side temp. sensor (TGa) error]
Is connection of CN604
on P.C.B WP-041 correct?
Is resistance value of TGa sensor correct?
YES
[B room gas side temp. sensor (TGb) error]
Is connection of CN605
on P.C.B WP-041 correct?
Is resistance value of TGb sensor correct?
YES
[C room gas side temp. sensor (TGc) error]
Is connection of CN606
on P.C.B WP-041 correct?
Is resistance value of TGc sensor correct?
YES
[Communication error between MCUs]
Are connections of CN802 on P.C.B MCC-1571
and CN802 on P.C.B WP-041 correct?
YES
[Communication error between MCUs]
Are connections of CN802 on P.C.B WP041
and CN802 on P.C.B MCC-1571 correct?
YES
[Communication error between MCUs]
Are connections of CN804 on P.C.B WP041
and CN800 on P.C.B MCC-1571 correct?
YES
- 78 -
FILE NO. SVM-18051
Check and troubleshooting
NO
Check outdoor P.C.B. WP-041.
NO
Check outdoor P.C.B. WP-041.
NO
Check outdoor P.C.B. WP-041.
NO
NO
NO
Correct connector.
Sensor error → Replace.
Defect → Replace.
Correct connector.
Sensor error → Replace.
Defect → Replace.
Correct connector.
Sensor error → Replace.
Defect → Replace.
Correct connection.
Check outdoor P.C. Boards.
Defect → Replace.
Correct connection.
Check outdoor P.C. Boards.
Defect → Replace.
Correct connection.
Check outdoor P.C. Boards.
Defect → Replace.