Remove terminal cover at right bottom corner of indoor unit, then take off wiring cover by removing its screws.
Insert the cable from the back side of the unit, then pull it out on the front side.
Loosen the screws and insert the cable ends fully into terminal block, then tighten the screws.
Pull the cable slightly to make sure the cables have been properly inserted and tightened.
After the cable connection, never fail to fasten the connected cable with the wiring cover.
3G1.5mm
+1X0.75mm 
3G1.0mm
Power cable:
3G1.0mm
HSU-12LEK13, HSU-12HEK03, HSU-12LEK03, HSU-09HEK03, HSU-07LEK03 specifications
Haier, a global leader in home appliances and consumer electronics, has long been recognized for its innovative approaches to air conditioning systems. Among its notable offerings are the HSU-12HEK03, HSU-09HEK03, HSU-07HEK03, HSU-09LEK03, and HSU-07LEK03 models, each designed to provide optimal comfort, energy efficiency, and user-friendly features for a variety of environments.The HSU-12HEK03 stands out for its powerful cooling capability, making it ideal for medium-sized rooms. This model boasts a cooling capacity of 12000 BTU, ensuring quick temperature drops even on the hottest days. Additionally, it features a modern design that blends seamlessly into any decor, while its advanced air filtration system helps maintain a clean and healthy indoor environment by removing dust, allergens, and other particulates from the air.
Similarly, the HSU-09HEK03 is well-suited for smaller spaces with its 9000 BTU cooling capacity. It incorporates inverter technology, which adjusts its cooling output based on the current temperature, enhancing energy efficiency and reducing electricity bills. This model is also equipped with a remote control feature, allowing users to adjust settings from a distance effortlessly.
For even more compact applications, the HSU-07HEK03 offers a minimal 7000 BTU cooling capacity. This unit is perfect for bedrooms or home offices where space is limited. Its whisper-quiet operation ensures that it doesn’t disrupt your daily activities or sleep, making it a great choice for noise-sensitive environments.
Moving on to the HSU-09LEK03 and HSU-07LEK03 models, these units provide a more budget-friendly option while maintaining high performance. The HSU-09LEK03, with a cooling capacity of 9000 BTU, balances efficiency and effectiveness, proving itself suitable for small to medium rooms. Meanwhile, the HSU-07LEK03, at 7000 BTU, offers versatility for compact spaces with a sleek design.
Both LEK series models integrate energy-saving technologies, including Eco Mode and programmable timers, allowing users to customize their cooling schedules for maximum efficiency. Additionally, all the highlighted models come with easy-to-clean air filters, which improve air quality and reduce maintenance efforts.
In conclusion, Haier's HSU series, including the HSU-12HEK03, HSU-09HEK03, HSU-07HEK03, HSU-09LEK03, and HSU-07LEK03, provides a comprehensive range of air conditioning solutions perfect for various room sizes and needs. With advanced technologies and user-centric features, these models are designed to enhance comfort and energy efficiency for years to come. Whether you need robust cooling for larger areas or a compact solution for cozy spaces, Haier offers reliable options that cater to diverse preferences.