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Check code
[P03]
[P05]
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Discharge temp. error]
[Power supply error (Voltage error)]
Is there no gas leak?
Is refrigerant charge amount adequate?
Is CN601 connection normal?
Is resistance value of TD sensor normal?
Is PMV normal?
Is it not abnormal overload?
Correct connector.
Sensor error → Replace
Correct and clear the cause.
Repair defective position.
Replace defective part.
Check outdoor P.C. board.
Defect → Replace
Repair defective position.
Recharge refrigerant.
NO
NO
NO
YES
YES
NO
YES
YES
NO
YES
Is there no down or up of power supply voltage?
(AC198 to 264V)
Confirm electric
construction, etc.
Check outdoor P.C. board.
Defect → Replace
Is the coil resistance value of 4-way valve
between 1.3 and 1.6kΩ?
Is operation of 4-way valve normal?
(Check pipe temp., etc. in cooling/heating operation.)
Replace coil of 4-way valve.
YES
Check 4-way valve.
Defect → Replace
NO
YES
NO
Temperature sensor check
TE sensor CN600
TS sensor CN603
Indoor TC sensor
Defect → Correct and repair
[4-way valve inverse error][P19]
<In case of SP40, SP45>