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Reset the power supply
and then perform test run
matching to the season.
Open service valve fully.
Check outdoor fan.
Defect → Replace, retightening
Replace
sensor.
Check indoor P.C. board.
Defect → Replace
Repair defect.
Is service valve
fully opened?
Is there any defect such as
loosening of nut in the outdoor fan?
Does the outdoor fan perform
abnormal operation?
Does indoor fan
operate correctly?
Are indoor fan motor
an connector correct?
Is resistance value
of TL sensor correct?
Are resistance values
of indoor TC and TCJ
sensors normal?
Replace TL sensor.
Check the same items as
[P22] error.
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
Defect → Correct defect.
Check overcharge of refrigerant, clogging of cycle,
broken pipe, abnormal overload, etc.
Defect → Correct defect.
Eliminate interfering element.
Eliminate interfering element.
Heating season
Heating operation
Cooling season
Cooling operation
Is there anything
which interfere heat exchange
of outdoor unit?
• Clogging of heat exchanger
• Short-circuit
Is there anything which interfere
heat exchange of indoor unit?
• Choking up the filter
• Clogging of heat exchanger
• Short-circuit
YES
YES
YES
YES
YES
NO
NO
YES
NO
NO
YES
NO
NO
NO
NO
YES
YES
NO
Check
code
[P20]
Outdoor
LED display
<Display 1> <Display 2>
¡
l
¡
l
¡ ¥
ll
¡ ¥
¡¡
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[High pressure protective operation]
<In case of SP80>