Toshiba RAV-GM 801UT-E Service Manual page 76

Check Outdoor
code LED display
[P20]
[P04]
(Item without special mention Indicates part of outdoor unit.)
[High pressure protective operation]
Is service valve
fully opened?
YES
Reset the power supply
and then perform test run
matching to the season.
Heating season
Heating operation
Does indoor fan
operate correctly?
YES
Is there anything which interfere
heat exchange of indoor unit?
Choking up the filter
•
Clogging of heat exchanger
•
Short-circuit
•
NO
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
→
Failure Fault part repair.
Check and troubleshooting
NO
Cooling season
Cooling operation
Is resistance value
of TE sensor correct?
(Resistance value measurement)
YES
Aren't there an outdoor fan's
crack and looseness?
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.
Failure → Fault part repair.
NO
Are indoor fan motor
an connector correct?
YES
Are resistance values
of indoor TC and TCJ
sensors normal?
YES
YES
– 76 –
Open service valve fully.
NO
Replace TE sensor.
YES
Check outdoor fan.
Failure → Replace, retightening
YES
Check the same items as
[P22] trouble.
YES
Eliminate interfering element.
NO
Fault part repair
NO
Replace
TC, TCJ sensor.
Check indoor P.C. board.
Failure → Replace
Eliminate interfering element.