Haier HPU-90CA03T3 operation manual Trouble shooting, Followings are not problems

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Trouble shooting

Followings are not problems

Sound of water flowings are not

During unit start and operation or at stop, a swishing or

problems.

gurgling noise may be heard. This noise is generated by

refrigerant flowing in the system.

 

Sound of cracking is heard.

During unit operation, a cracking noise may be heard.

 

This noise is generated by the casing expanding or

 

shrinking because of temperatuer changes.

Smells are generated.

This is because the system circulates smells from the

 

interior air such as the smell of cigarettes or the painting

 

on the unit.

During operation, white fog or steam

When unit is running at places like restaurant where dense

comes out of indoor unit.

edible oil fumeis always exist, this will happen.

In cooling operation, unit switches to fan

To prevent frost from accumulating on indoor heat

operation.

exchanger, unit will switch to fan operation for a while

then resume cooling operation.

 

Unit will not restart after stop.

Though ON/OFF button is set to

Won't start?

ON, unit won't resume cooling,dry

 

or heating operation in 3 min after

 

it is stopped, this is because of 3-

 

min-delay protection circuit.

 

Please wait 3 minutes

No outlet air or fan speed can't be changed in

Unit will reduce fan speed repeatedly and automatically

dry mode.

if room temp. is too low in dry operation.

In heating operation, water or

T h i s o c c u r s w h e n f r o s t

steam are blown out of indoor

accumulated on the outdoor unit

unit.

is removed.

(during defrosting operation)

 

In heating operation, indoor fan won't stop even

After unit stops, indoor fan will go on running until indoor

if unit is stopped.

unit cools down.

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Contents Cabinet unit Outdoor unit Name of PartsParts and Functions Operation points Applicable ambient temperature range Safety PrecautionsUnit start OperationFan Operation Windows should be hung with curtains or blinds Users’ AttentionRemove air inlet grille MaintenanceAfter season maintenance Followings are not problems Trouble shootingSwitch is not set At on When problems occur?Symptom When Troubles Occur ?Installation instruction Standard accessories Installation instructionBefore installation Installation procedureInstallation of indoor unit Installation procedureInstallation of fall-prevention fitting metal Indoor unit Slope Good Main points of installation refrigerant pipe Outdoor unit Unit Clearances Tubing connection Matters needing attention Vacuum Pumping Check for leakageHeat isolation of the pipes Refrigerant chargeRefill refrigerant Open all valvesConnect wire between indoor & outdoor unit Wiring method Wiring method of orbicular terminalPressing method of connection wire Others Preventive measures against excess of critical value Calculation of refrigerant densityPage