Haier HDU-42H03/H Indoor unit wiring, Replace the upper part of wire controller, Hint

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INSTALLATION MANUAL FOR WIRE CONTROLLER

3. Indoor unit wiring

Connect terminals (A,B,C,D) on lower part of wire controller to terminals (A,B,C,D) on PCB of indoor unit.

wiring from here

A B C D

Lower part of wire controller

Hint

When make wiring, please keep a distance between wires and power supply cord.

Wire size

Cord kind	Shield wire (4 core)
	(refer to Hint 3,4)
Size	0.33mm2

Upper part of wire controller

Use shielede wires for telecommunication between wire controller and indoor unit; indoor unit and outdoor unit. Ground the shield on one side.

Otherwise misoperation because of noise may occur.

Signal wire is self-provided.

Shielded wire

ground

Hint

Tread surface of the terminal well so that shielding may not contact other part.

4. Replace the upper part of wire controller

Be careful not to press the wiring.

Hint

1.Switch box and cord for wiring are not supplied.

2.Don't touch PCB with hand.

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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 Cooling or heating is not sufficient MalfunctionUnit fails to start Cooling is not sufficientDuring this time air conditioner operates in fan Followings are not malfunctionStopped. Because the protecting circuit is activated 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 Installation of outdoor unit AccessoriesSelection of the place of installation InstallationOutline piping Refrigerant pipingPiping size Model To use vacuum pump5mm 30mA Electric wiringWire size Switch Leak Rated capacity a Minimum 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.