Toshiba RAV-GM1101AT8P-E Service Manual page 59

Check Outdoor
code LED display
[P19]
[P20]
(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: GM110, 140 :
CN601 TS sensor: GM110,
140 : CN600
YES
Is refrigerant flow by
PMV correct?
YES
Are resistance value
of indoor TC and TCJ
sensors correct?
YES
[High pressure protective operation]
Is service valve
fully opened?
YES
Reset the power supply
and then make a test run.
Is resistance value of
TE sensor correct?
YES
Is there any defect such as
loosening of nut in the outdoor fan?
NO
Does the outdoor fan perform
abnormal operation?
NO
Is there anything
which interfere heat exchange
of outdoor unit?
• Clogging of heat exchanger
• Short-circuit
NO
Check overcharge of refrigerant, clogging of
cycle, broken pipe, abnormal overload, etc.
Defect → Correct defect.
- 59 -
Check and troubleshooting
Is the 4-way valve
NO
coil is normal?
(Check the resistance value
of 4-way valve coil)
YES
NO
Replace TE sensor.
Replace TS sensor.
NO
Check and
replace of PMV
Replace TC sensor
NO
Replace TCJ sensor
Check indoor P.C. board.
Defect → Replace
NO
Open service valve fully.
NO
YES
Defect → Replace,retightening
YES
Check the same items as
YES
Eliminate interfering element.
FILE NO.SVM-18044-2
NO
Replace coil
of 4-way valve.
Does power supply to 4-
YES
way valve coil when
4-way valve is operated?
NO
Error
Check outdoor
P.C. board.
OK
Check outdoor
P.C. board.
Defect → Replace
Check 4-way valve.
Defect → Replace
Replace TE sensor.
Check outdoor fan.
[P22] error.