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[P04 error]
Does PMV normally operate?
Is fan motor normal?
Is connection of cabling
connector normal?
Do not TD and TO sensors
come off the detection part?
Is connection of
connector normal?
Does cooling outdoor fan
normally operate?
Are characteristics of
TD, TO, TC sensor resistance
values normal?
∗
Is high-voltage
protective operation by
TE sensor normal?
Check charged refrigerant amount.
Check liquid/gas valves.
Check abnormal overload.
Correct connection
of cabling connector.
Replace fan motor.
Check TE sensor.
Defect → Replace
Correct connection
of connector.
Replace TD, TO,
and TC sensors.
Check CDB.
Defect → Replace
Check TE, TC, TS sensors.
Replace electron expansion valve.
Correct coming-off.
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
YES
∗
Refer to 10-2-6. Relational graph of temperature sensor
resistance value and temperature Characteristics-3, 4.