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Check code<br />

[P03]<br />

[Discharge temp. error]<br />

Check and troubleshooting<br />

(Item without special mention Indicates part of outdoor unit.)<br />

Is there no gas leak?<br />

Is refrigerant charge amount adequate?<br />

YES<br />

Is PMV normal?<br />

YES<br />

Is it not abnormal overload?<br />

NO<br />

Is CN601 connection normal?<br />

Is resistance value of TD sensor normal?<br />

YES<br />

NO<br />

NO<br />

YES<br />

NO<br />

Repair defective position.<br />

Recharge refrigerant.<br />

Repair defective position.<br />

Replace defective part.<br />

Correct and clear the cause.<br />

Correct connector.<br />

Sensor error → Replace<br />

Check outdoor P.C. board.<br />

Defect → Replace<br />

[P05]<br />

[Power supply error (Voltage error)]<br />

Is there no down or up of power supply voltage?<br />

(AC198 to 264V)<br />

NO<br />

YES<br />

Confirm electric<br />

construction, etc.<br />

Check outdoor P.C. board.<br />

Defect → Replace<br />

[P19]<br />

[4-way valve inverse error]<br />

Is operation of 4-way valve normal?<br />

(Check pipe temp., etc. in cooling/heating operation.)<br />

NO<br />

YES<br />

Temperature sensor check<br />

TE sensor CN600<br />

TS sensor CN603<br />

Indoor TC sensor<br />

Defect → Correct and repair<br />

Is the coil resistance value of 4-way valve<br />

between 1.3 and 1.6kΩ?<br />

YES<br />

NO<br />

Replace coil of 4-way valve.<br />

Check 4-way valve.<br />

Defect → Replace<br />

– 138 –

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