Toshiba RAV-GM301ATP-NZ Service Manual page 60

Check Outdoor
code LED display
[P15]
—
[P19]
—
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Gas leak detection]
Is there gas leak?
Is there refrigerant shortage?
NO
Is PMV under correct condition?
YES
Is service valve fully opened?
YES
Is there crushed pipe?
NO
Check temp. sensor.
TD sensor CN601, TS sensor CN603
OK
[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: GM30, 40 : CN61
TS sensor: GM30, 40 : CN64
YES
Is refrigerant flow by
PMV correct?
YES
Are resistance value of
indoor TC and TCJ
sensors correct?
YES
– 60 –
YES
Repair defective position.
NO
Correct defective position.
Replace defective part.
NO
Open service valve fully.
YES
Correct and replace piping.
Error
Sensor error → Replace
Check outdoor P.C. board.
Defect → Replace
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
OK
NO
Check and
replace of PMV
Replace TC sensor
NO
Replace TCJ sensor
Check indoor P.C. board.
Defect → Replace
Recharge refrigerant.
Correct connector.
NO
Replace coil
of 4-way valve.
YES
NO
Error
P.C. board.
Check outdoor
P.C. board.
Defect → Replace
Check 4-way valve.
Defect → Replace