Toshiba RAS-4M27S3AV-E Service Manual page 88

Check Outdoor
code LED display
[21]
(Continued)
Check and troubleshooting
(Item without special mention indicates part of outdoor unit.)
C
Heating operation
Does the heating indoor fan
normally operate?
YES
Is there any element which
blocks indoor heat exchanger?
Filter clogging
Clogging of heat exchanger
Short circuit
NO
Clogging by refrigerant
overcharge/Pipe breakage/
Abnormal overload
Check indoor P.C. board
Defective → Replace
- 88 -
NO
Are connections of
connectors,capacitors
and fan motor normal?
YES
YES
Elimination of
blocking element
Are characteristics
of TC and TCJ sensor
resistance value normal?
YES
FILE NO. SVM-15073
NO
Repair
defective position.
NO
Replace
TC or TCJ sensor.