Haier HDU-42H03/H Malfunction, Unit fails to start, Cooling or heating is not sufficient

Models: HDU-28H03/H HDU-42H03/H HDU-24H03/H

1 37
Download 37 pages 12.57 Kb
Page 16
Image 16
 MALFUNCTION

Unit fails to start 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 normal?

Power stoppage?

Isn't the signal receiving section exposed to the direct sunlight or strong illumination?

Isn't the earth leakage breaker in action?

It is dangerous. Turn off the power supply switch immediately and contact the sales dealer.

Cooling or heating is not sufficient

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

Isn't any doors or windows

Doesn't any obstacle

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?

 

 

 

page 9

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.

When the CHECK lamp (red) flickers, an irregularity has occurred in the air conditioner.

Flickering

 

E0

E1

E2

E3

E4

E5

E6

E8

E9

 

 

 

 

 

 

 

 

 

 

Content

The trouble

The trouble

The trouble

The trouble

The trouble of

The trouble of

The trouble of

The trouble of the

The trouble of the

of defect

o f

t h e

of the room

of the pipe

of the outdoor

the

outdoor

the overload

the low pressure

main control board

main control board

 

drainage

temp. sensor

temp. sensor

temp. sensor

pipe

temp.

current

pressure of pipe

communication

outdoor board

 

system

 

 

 

sensor

 

 

 

communication

 

 

 

 

 

 

 

 

 

 

 

 

Note:

This unit has a function of automatic restart system after recovering power stoppage. Please contact the sales dealer if it is not required.

15

Page 16
Image 16
Haier HDU-42H03/H Malfunction, Unit fails to start, Cooling or heating is not sufficient, Cooling is not sufficient

FAQ

What should I do if my air conditioner fails to start?

Check the power source switch, city supply power, direct sunlight exposure, and earth leakage breaker before contacting your sales dealer.

How can I improve the cooling or heating performance of my air conditioner?

Ensure the thermostat is adjusted correctly, the air filter is clean, and there are no obstructions at the air inlet or outlet.

Why does the fuse or breaker often shut down in my air conditioner?

If the fuse or breaker frequently shuts down, stop the operation of the air conditioner and contact your sales dealer for assistance.