High Pressure Protective Operation - Toshiba RAV-GM301ATP-E Service Manual

Check Outdoor
code LED display
[P20]
—
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)

[High pressure protective operation]

Is service valve fully opened?
VBP
Reset the power supply
and then make a test run
matching to the season.
Heating season
Heating operation
as loosen nut in outdoor fan?
perform abnormal operation?
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
Defect → Correct defective position.
Does indoor fan
correctly operate?
VBP
Is there any element blocks
heat exchanger of indoor unit?
exchanger
rt circuit
NO
– 61 –
NO
Open service valve fully.
Cooling season
Cooling operation
Is resistance value of
outdoor TE sensor correct?
VBP
Replace sensor.
Is there any defect such
NO
Check outdoor fan.
Defect → Replace, retightening
Does the outdoor fan
NO
Check the same items as
Is there any element which
blocks heat exchanger
of outdoor unit?
exchanger
rt circuit
NO
Eliminate interfering element.
NO
Are indoor fan motor
and connector correct?
VBP
Correct the connection.
Are resistance values
of indoor TC and TCJ
sensors correct?
VBP
Check indoor P.C. board.
Defect → Replace
VBP
Eliminate interfering element.
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
Defect → Correct defective position.
FILE NO. SVM-18042-1
NO
VBP
VBP
[P22] error.
VBP
NO
NO
Replace
sensor.