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-18CV13(T3), HSU-18HV13(T3), HSU-24HV13(T3), HSU-24CV13(T3) specifications
Haier has consistently been a leader in the heating, ventilation, and air conditioning (HVAC) industry, and its recent offerings of the HSU-24CV13(T3), HSU-24HV13(T3), HSU-18HV13(T3), and HSU-18CV13(T3) models reflect the company's commitment to providing energy-efficient and innovative cooling solutions. These air conditioners are designed to cater to diverse customer needs while maintaining optimal performance and reliability.One of the standout features of these models is the advanced inverter technology, which allows for variable-speed operation. This technology ensures that the compressor adjusts its speed based on the cooling demand, resulting in significant energy savings. Users can enjoy comfortable indoor conditions without the constant energy spikes associated with traditional fixed-speed systems. This is not only beneficial for the environment, but it also leads to lower utility bills.
The HSU series units are also equipped with a powerful air purification system. Featuring multi-stage filtration, these air conditioners filter out dust, allergens, and other airborne particles from indoor air, making them ideal for households with allergy sufferers. This focus on indoor air quality highlights Haier's commitment to health and wellness, creating a more comfortable living environment.
In terms of design, the HSU-24CV13(T3) and HSU-24HV13(T3) models flaunt a sleek, modern aesthetic that can seamlessly integrate into various home décors. These air conditioners operate quietly, ensuring minimal disruption during use. The HSU-18 models exhibit similar design principles, perfect for smaller spaces without compromising on functionalities or performance.
All models come with smart features, including remote control and programmable settings. Users can easily adjust temperature settings, fan speed, and operation modes through user-friendly interfaces, including smartphone apps in select versions. This level of control allows for personalized comfort and convenience, making temperature management effortless.
Durability is another hallmark of the HSU series, constructed from high-quality materials that resist corrosion and wear. This longevity not only ensures dependable operation over time but also contributes to lower maintenance costs for users.
In conclusion, Haier's HSU-24CV13(T3), HSU-24HV13(T3), HSU-18HV13(T3), and HSU-18CV13(T3) air conditioners are perfect examples of modern HVAC technology. With energy-efficient inverter technology, effective air purification, sleek designs, smart control features, and durable construction, these units are an excellent investment for maintaining comfort in home and office environments.