When the emergency operation switch is pressed,the" Pi "sound is heard once, which means the start of this operation.
In this operation, the system automatically selects the operation modes, cooling or heating, according to the room temperature.
It is not possible to operate in dry mode.
Continue to press the test operation switch for more 
than 5 seconds. After you hear the "Pi" sound twice, 
release your finger from the switch: the cooling operation 
starts with the air flow speed "Hi".
HSU-09C03, HSU-09H03, HSU-12C03, HSU-12H03, HSU-18C03, HSU-18H03, HSU-22C03, HSU-22H03 specifications
Haier, a leading global brand in home appliances and consumer electronics, offers a range of air conditioning units that are designed to cater to diverse cooling needs. Among their popular models are the HSU-09C03, HSU-09H03, HSU-12C03, HSU-12H03, HSU-18C03, HSU-18H03, HSU-22C03, and HSU-22H03. Each of these models boasts unique features, advanced technologies, and exceptional performance characteristics, making them ideal choices for both residential and commercial spaces.The Haier HSU-09C03 and HSU-09H03 models are well-suited for smaller rooms while providing efficient cooling and heating capabilities. Both are equipped with energy-saving features, ensuring minimized electricity consumption. The HSU-09H03, in particular, distinguishes itself with its advanced inverter technology, enabling it to adjust the compressor speed to maintain the desired temperature more efficiently.
For medium-sized areas, the HSU-12C03 and HSU-12H03 offer enhanced power and cost efficiency. These models feature a sleek design and advanced filtration systems that improve indoor air quality. The HSU-12H03 includes Wi-Fi connectivity, allowing for remote control and monitoring through a mobile app, showcasing Haier’s commitment to convenience and modern living.
The HSU-18C03 and HSU-18H03 cater to larger spaces while ensuring reliable performance even under high demand. Boasting high cooling capacities, these models are equipped with multiple cooling modes and self-cleaning functions that enhance durability and maintain hygiene. The HSU-18H03 again benefits from inverter technology for optimum energy performance, thus reducing long-term operational costs.
For expansive areas, the HSU-22C03 and HSU-22H03 deliver top-notch cooling power without compromising on efficiency. Both models are designed with robust compressors capable of handling the demands of large spaces. They also feature advanced noise reduction technology, ensuring a quiet operation, making them perfect for homes and offices.
Across the entire range, Haier places a strong emphasis on energy efficiency, utilizing R32 refrigerant, which is known for its lower global warming potential. The air conditioners are equipped with user-friendly interfaces, customizable settings, and sleep mode features that adapt to the user's rhythm, providing maximum comfort and flexibility.
In summary, the Haier HSU series air conditioners are a robust solution for diverse cooling needs, combining efficiency, advanced technology, and user-friendly features to create an ideal indoor environment. Whether for small rooms or expansive areas, Haier’s offerings stand out in performance and reliability, embodying the brand's commitment to quality and customer satisfaction.