Installation procedures 
Electric wiring must be done by qualified person.
Use copper wire only, the parameter of connecting cable is 
The power cable should be over 5G2.5mm
The power supply connects from the outdoor unit. Wiring of indoor unit
Insert the cable from outside the wall hole where piping already exist.
Pull it out from front.
Loosen terminal screws and insert cable end fully into terminal block, then tighten it. 
Pull the cable gently to make sure it is tight.
Replace cover after wiring. Wiring of outdoor unit
Insert the cable from inside the wall hole where piping already exists.
Pull it out from front.
Loose terminal screw and insert cable end fully into terminal block, then tighten it.
Pull the cable gently to make sure it is tight. 
Replace cover after wiring.
When connecting indoor and outdoor wire, check the number on indoor and outdoor terminal blocks.Incorrect wiring may damage air conditioner's controller or cause operation failure.HPU-48CK03, HPU-48CJ03, HPU-48HJ03, HPU-42HH03, HPU-48HK03 specifications
Haier has consistently pioneered innovative solutions in the HVAC sector, and their lineup of air conditioning units, including the HPU-42HI03, HPU-48HK03, HPU-48HJ03, HPU-48CK03, and HPU-42CH03, epitomizes this commitment to excellence. Each of these models is designed to provide efficient cooling and heating solutions, making them ideal for both residential and commercial applications.Starting with the HPU-42HI03, this model boasts a powerful cooling capacity while maintaining energy efficiency. It features the latest inverter technology, which allows for precise temperature control and reduced energy consumption. The compact design of the unit makes it suitable for various installation settings, providing versatile solutions for different space requirements.
The HPU-48HK03 is another standout in this range, equipped with advanced refrigerant management systems that enhance performance and reliability. This model prioritizes user comfort with a selection of fan speed options and a quiet operation mode, ensuring a comfortable environment without being intrusive. Its robust build ensures durability, even in demanding conditions.
Not to be overlooked, the HPU-48HJ03 offers enhanced air filtration capabilities, capturing airborne pollutants and ensuring that the air quality in your space remains high. This model is particularly suited for environments where clean air is a priority, thanks to its multi-layer air purification system that effectively eliminates dust, allergens, and other contaminants.
The HPU-48CK03 integrates smart technology into its operation, allowing users to control the unit via smartphone applications. This model supports Wi-Fi connectivity, enabling remote access and adjustments to settings, making it convenient for users who desire flexibility and control. Alongside its energy-efficient performance, the HPU-48CK03 is designed to operate quietly, making it perfect for bedrooms or study areas.
Lastly, the HPU-42CH03 is characterized by its multi-zone capability, allowing for independent control of various zones within a building. This model is ideal for larger spaces or homes with open floor plans, as it can cater to different temperature preferences in different rooms. Its advanced chiller technology ensures that energy consumption remains low while delivering optimal cooling and heating performance.
In summary, the Haier HPU series—comprising the HPU-42HI03, HPU-48HK03, HPU-48HJ03, HPU-48CK03, and HPU-42CH03—offers a diverse array of features and technologies tailored to meet contemporary HVAC needs. Each model stands out for its energy efficiency, advanced engineering, and user-friendly controls, making them an excellent choice for anyone looking to enhance their indoor climate.