Toshiba RAV-GM1601AT8P-E Service Manual page 71

Check Outdoor
code LED display
[P19]
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[4-way valve inverse error]
Is operation of 4-way valve
correct?
(Check pipe temp. and etc. in
cooling/heating operation.)
YES
Are temperature sensors
correct?
TE sensor: CN601
TS sensor: CN600
YES
Is refrigerant flow by
PMV correct?
YES
Are resistance value of
indoor TC and TCJ
sensors correct?
YES
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Is the 4-way valve
NO
coil is normal?
(Check the resistance value
of 4-way valve coil)
YES
Does power supply to
4-way valve coil when
4-way valve is operated?
NO
Replace TE sensor.
Replace TS sensor.
Check outdoor
P.C. board.
OK
NO
Check and
replace of PMV
Replace TC sensor
NO
Replace TCJ sensor
Check indoor P.C. board.
Defect → Replace
NO
Replace coil
of 4-way valve.
YES
NO
Error
Check outdoor
P.C. board.
Defect → Replace
Check 4-way valve.
Defect → Replace