Toshiba RAS-2M21U2ACVG-SG Service Manual page 75

Check Outdoor
code LED display
[20]
 **

*
**
* 
**
:ON ( *:3 sec ON / 0.5 sec OFF) :OFF
(Item without special mention indicates part of outdoor unit.)
∗ There is a possibility that it is one of the following errors.
Confirm LED on display P.C. board (MCC-1646) to judge which error it
is. PMV error for A room, B room, C room, D room, E room.
[PMV error for A room]
Is PMV under correct conditions?
YES
Check temp. sensor of A room indoor unit?
TA sensor, TC sensor
OK
[PMV error for B room]
Is PMV under correct conditions?
YES
Check temp. sensor of B room indoor unit?
TA sensor, TC sensor
OK
[PMV error for C room]
Is PMV under correct conditions?
YES
Check temp. sensor of C room indoor unit?
TA sensor, TC sensor
OK
- 75 -
Check and troubleshooting
NO
Error
Check outdoor P.C.B. MCC-1665
NO
Error
Check outdoor P.C.B. MCC-1665
NO
Error
Check outdoor P.C.B. MCC-1665
Repair defective position.
Replace defective part.
Correct connector.
Sensor error → Replace.
and indoor A room P.C. board.
Defect → Replace.
Repair defective position.
Replace defective part.
Correct connector.
Sensor error → Replace.
and indoor B room P.C. board.
Defect → Replace.
Repair defective position.
Replace defective part.
Correct connector.
Sensor error → Replace.
and indoor C room P.C. board.
Defect → Replace.