Toshiba RAV-SP1404AT-E1 Service Manual page 56

Check Outdoor
code LED display
[P20] <Display 1> <Display 2>
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[High pressure protective operation]
Is valve fully opened?
YES
Reset the power supply
and then perform test run
matching to the season.
Heating season
Heating operation
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
Defect → Correct defective position.
Does indoor fan
normally operate?
YES
Is there no element which
interfere heat exchange of indoor unit?
• Clogging of filter
• Clogging of heat exchanger
• Short circuit
NO
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
Defect → Correct defective position.
– 56 –
NO
Cooling season
Cooling operation
Is there no problem
on outdoor TL sensor?
(Measurement of resistance value)
YES
Is there no crack or
loosening of outdoor fan?
YES
Defect → Replace, retightening
Does not the outdoor fan
perform abnormal operation?
YES
Is there no element
which interfere heat exchange
of outdoor unit?
• Clogging of heat exchanger
• Short circuit
NO
Eliminate interfering element.
NO
Are indoor fan motor
and connector normal?
YES
Are resistance values
of indoor TC and TCJ
sensors normal?
YES
YES
Eliminate interfering element.
Open valve fully.
NO
Replace sensor.
NO
Check outdoor fan.
NO
Check the same items as
[P22] error.
YES
NO
Repair defective position.
NO
Replace
sensor.
Check indoor P.C. board.
Defect → Replace