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

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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?

 

 

 

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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.

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Contents Please read this manual carefully before using ManualTable of Contents Disposal of the old air conditioner Safety Precations It could cause such problems as water leakageSafety Precautions Make sure to use a fuse of proper electric ratingApplicable ambient temperature range Safety PrecautionMachine is adaptive in following situation HDU-24H03/HHDU-42H03/H HDU-28H03/H Parts and FunctionsAir outlet Duct Drainpipe Air inlet Buttons and display of the wire controller Remote control Clock setOperation Recommendations Select temp. settingFan speed selection Select your desired Timer mode on or OFF Set Clock correctly before starting Timer operationPress Time Select Offon Follow the same procedures in Time setting for Timer onPress Time button Heating mode Cooling, dehumidifying modeComfortable Sleep Operation Malfunction Unit fails to startCooling or heating is not sufficient Cooling is not sufficientFollowings are not malfunction Stopped. Because the protecting circuit is activatedDuring this time air conditioner operates in fan Outdoor unit during heating During defrosting operationCare and Maintenance Points to observeWarming Operation Installation place Is the Unit Installed CorrectlyElectric work Installation Manual for Wire Controller Replace the upper part of wire controller Indoor unit wiringHint Accessories Selection of the place of installationInstallation of outdoor unit InstallationOutline piping Refrigerant pipingPiping size Model To use vacuum pumpElectric wiring Wire size Switch Leak Rated capacity a Minimum5mm 30mA 0mm 30mATest run Installation Manual for Indoor Unit Safety precautionsChoose installation place Preparation before installation Installation of indoor unit Drain PipingInstallation of air suction and discharging duct Chosen chart of simple duct Shape Square duct Dimension Air volumeExamples of improper installation Air discharging fan Improper exampleOperation method of fan controller Example of the method of choosing capacity numberRefrigerant pipe

HDU-28H03/H, HDU-42H03/H, HDU-24H03/H specifications

Haier has established itself as a leading name in the HVAC sector, and their HDU series, including models HDU-28H03/H, HDU-42H03/H, and HDU-24H03/H, exemplifies the brand's commitment to quality and efficiency. These air conditioning units are ideal for both residential and commercial use, designed to provide optimal comfort without compromising on energy efficiency.

One of the standout features of the HDU series is its advanced inverter technology. This allows the units to adjust their cooling and heating output based on the current demand, ensuring that energy is used efficiently. As a result, users can expect reduced energy bills while enjoying a consistently comfortable indoor climate. The inverter system minimizes temperature fluctuations by maintaining a steady output, enhancing overall comfort.

Another notable aspect of the HDU models is their high energy efficiency ratings, often reaching levels that exceed industry standards. This is largely due to the use of R32 refrigerant, which has a lower global warming potential compared to traditional refrigerants. The incorporation of R32 not only makes these units more environmentally friendly but also helps to improve efficiency, providing effective cooling and heating performance even in extreme weather conditions.

Additionally, the HDU units boast a wide operating temperature range. They are designed to work seamlessly in a variety of climates, maintaining performance in temperatures as low as -15°C for heating and up to 50°C for cooling. This adaptability makes them a versatile choice for different geographic locations.

Quiet operation is another impressive feature of the HDU series. The indoor units are engineered to operate at whisper-quiet levels, making them ideal for bedrooms, offices, or any space where noise could be a concern. This allows users to enjoy a peaceful environment while maintaining their comfort.

The user-friendly interface and smart features of the HDU models further enhance their appeal. Equipped with modern remote controls and optional Wi-Fi connectivity, users can easily manage their air conditioning settings from anywhere, providing convenience and flexibility.

In summary, the Haier HDU-28H03/H, HDU-42H03/H, and HDU-24H03/H models combine advanced inverter technology, high energy efficiency, a wide operating temperature range, and quiet operation to deliver outstanding performance. Their smart features and eco-friendly refrigerant make them a reliable choice for those seeking comfort and efficiency in their HVAC systems.