Protection devices inside the unit will activate to stop unit operation, when ambient temp. is extremely low or high.
When unit is running under high humidity in cooling or dehumidifying mode, condensate might appear at outlet grill.
Unit will not restart until 3 min have elapsed for the protection of the unit.
When Fan speed is set at Auto in cooling mode, it will be automatically reduced as room temp. is approaching temp. setting.
In dry mode, fan speed will change automatically.
In heating mode, indoor fan will not run for the first 
When frost accumulates on heat exchanger in heating mode, unit will start defrosting automatically.
During defrosting, both indoor and outdoor fan stop. 
After defrosting, unit resumes running.
Heat pump works by means of absorbing outside heat to warm room air, so outdoor temp. degree will affect unit's heating efficiency.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.