Haier HPU-90CA03T3 operation manual After season maintenance

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Maintenance

After season maintenance

Let the unit run in Fan mode for half a day in a fine weather to dry completely the unit inside.

Turn off the unit and pull out power plug.

There might be certain power consumption even if unit is stopped.

Clean air filter and indoor unit, cover outdoor unit after cleaning.

Before season maintenance

Check if there are obstacles at inlet and outlet of indoor and outdoor unit, whick will reduce unit efficiency.

Don't fail to attach air filter after making sure it is cleaned.

Dust will enter into unit causing damages or faults if it is running without air filter.

To protect compressor at start, please connect external power supply to the unit 12 hrs prior to starting. Also please keep the power supply switch ON during the whole season.

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Contents Cabinet unit Name of Parts Outdoor unitParts and Functions Operation points Safety Precautions Applicable ambient temperature rangeOperation Unit startFan Operation Users’ Attention Windows should be hung with curtains or blindsMaintenance Remove air inlet grilleAfter season maintenance Trouble shooting Followings are not problemsWhen problems occur? Switch is not set At onWhen Troubles Occur ? SymptomInstallation instruction Installation instruction Standard accessoriesInstallation procedure Before installationInstallation procedure Installation of indoor unitInstallation of fall-prevention fitting metal Indoor unit Slope Good Main points of installation refrigerant pipe Outdoor unit Unit Clearances Tubing connection Matters needing attention Check for leakage Vacuum PumpingOpen all valves Refrigerant chargeRefill refrigerant Heat isolation of the pipesPressing method of connection wire Wiring method Wiring method of orbicular terminalConnect wire between indoor & outdoor unit Others Calculation of refrigerant density Preventive measures against excess of critical valuePage