Haier HPU-90CA03T3 operation manual When problems occur?, Switch is not set At on

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When problems occur?

Before ask for services, please first check your unit against following.

Air conditioner won't start.

Is power supply switch

Is city power supply normal?

turned on?

 

Power supply

Power

failure?

switch is not set

 

at ON.

 

Is leakage current breaker activated?

This is very dangerous, please disconnect power supply immediately and contact your dealer.

Poor cooling or heating

Are operation controlls

Is air filter too dirty?

adjusted correctly

 

as specified?

 

Proper

 

temp

 

Are horizontal louvers

Any doors or windows left

at up position (in

open?

heating mode)?

 

Are there any obstacles at inlet or outlet grill?

Poor cooling

Is there any direct sunlight in the room?

If there are unexpected heat

Too many people in the room?

sources in the room?

 

If your unit still can't work properly after above mentioned checks, or following problems occur, please stop it immediately and contact your dealer.

Fuses or circuit breakers often blow out.

Water comes out in cooling/dry operation.

Operation is abnormal or sound is heard.

If the fuse on PC board is broken please change it with the type of T.6.3A/250VAC.

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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 PumpingRefrigerant charge Refill refrigerantOpen all valves Heat isolation of the pipesWiring method Wiring method of orbicular terminal Pressing method of connection wireConnect wire between indoor & outdoor unit Others Calculation of refrigerant density Preventive measures against excess of critical valuePage