Malfunction

please check the following things about your air conditioner before making a servie call.

Unit fails to start

Is the power source switch adjust cut in?

ON

OFF

Power supply switch is not ON.

Is city supply power in

Isn't the signal receiving

Isn't the earth leakage

normal?

section exposed to the

breaker in action?

 

direct sunlight or strong

 

 

illumination?

It is dangerous. Turn off

 

 

Power

 

the power supply switch

stoppage?

 

immediately and contact

 

 

 

 

the sales dealer.

Cooling or heating is not sufficient

Is the thermostat adjust Isn't the air filter dirty?

Isn't any doors or windows

Doesn't any obstacle

as required?

left open?

exist at the air inlet or

 

 

outlet?

 

 

 

Isn't the swing louver

Cooling is not sufficient

 

horizontal?

 

 

 

Isn't sun-shine invading

Isn't any unexpected

Isn't the room much

(At HEATING mode)

If swing louver is horizontal,

direct?

heating load generated?

crowded?

the blow wind does not reach

 

 

 

floor.

 

 

 

The wind does not blow

 

 

 

 

 

 

during heating operation

 

 

 

Isn't it warming up?

 

 

 

When the air conditioner does not operate properly after you have checked the above mentioned items or when the following phenomenon is observed, stop the operation of the air conditioner and contact your sales dealer.

The fuse or breaker often shuts down.

Water drops off during cooling operation.

There is a irregularity in operation or abnormal sound is audible.

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Haier HDU-18CF03, HDU-18HF03, HDU-28CF03 installation manual Malfunction, Unit fails to start