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Check
code
[P04]
Outdoor
LED display
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
<Display 1> <Display 2>
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<Display 1> <Display 2>
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<Display 1> <Display 2>
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[Case thermostat operation] → Refer to [H04] column.
[Power supply error (Vdc)] → Refer to [P05] column.
[High pressure protective operation] → Refer to [P20] column.
Are characteristics
of TC and TCJ sensor
resistance value normal?
Are connections of
connectors,capacitors
and fan motor normal?
Heating operation
Does the heating indoor fan
normally operate?
Clogging by refrigerant
overcharge/Pipe breakage/
Abnormal overload
C
Is there any element which
blocks indoor heat exchanger?
Filter clogging
Clogging of heat exchanger
Short circuit
Elimination of
blocking element
Repair
defective position.
Replace
TC or TCJ sensor.
Check indoor P.C. board
Defective → Replace
YES
YES
YES
NO NO
YES
NO
NO