Trouble shooting

Before asking for service, check the following first.

Phenomenon

Cause or check points

The system does not restart

When unit is stopped, it won't restart

immediately.

immediately until 3 minutes have elapsed

 

to protect the system.

 

When the electric plug is pulled out and

 

reinserted, the protection circuit will work

 

for 3 minutes to protect the air conditioner.

 

During unit operation or at stop, a swishing

 

or gurgling noise may be heard. At first 2-3

Noise is heard

minutes after unit start, this noise is more

 

noticeable. (This noise is generated by

 

refrigerant flowing in the system.)

Normal

During unit operation, a cracking noise may

Performance

be heard. This noise is generated by the

inspection

casing expanding or shrinking because of

temperature changes

 

 

Should there be a big noise from air flow in

 

unit operation, air filter may be too dirty.

Smells are generated.

This is because the system circulates smells

from the interior air such as the smell of

 

furniture, cigarettes.

Mist or steam are blown out.

During COOL or DRY operation, indoor unit

 

may blow out mist. This is due to the sudden

 

cooling of indoor air.

Does not work at all.

Is power plug inserted?

Multiple

Is there a power failure?

check

Is fuse blown out?

Poor cooling

Is the air filter dirty? Normally it should be

cleaned every 15 days.

 

 

Are there any obstacles before inlet and outlet?

 

Is temperature set correctly?

 

Are there some doors or windows left open?

 

Is there any direct sunlight through the

 

window during the cooling operation?(Use

 

curtain)

 

Are there too much heat sources or too many

 

people in the room during cooling operation?

Application temp. range of air conditioner -7oC~43oC.

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Haier HSU-18R04, HSU-09R04, HSU-12R04, HSU-24R04 Trouble shooting, Before asking for service, check the following first

HSU-18R04, HSU-24R04, HSU-12R04, HSU-09R04 specifications

The Haier HSU series of air conditioners - including the HSU-09R04, HSU-12R04, HSU-18R04, and HSU-24R04 - showcases Haier's commitment to quality, efficiency, and advanced technology in climate control solutions. Each model caters to varying room sizes and cooling needs, making them versatile additions to any home or office setting.

The HSU-09R04 is designed for smaller spaces, delivering efficient cooling and heating with a capacity of 0.9 kW. It employs inverter technology, allowing for variable compressor speed, which optimizes energy consumption by adjusting the cooling output as needed. This model is ideal for bedrooms or compact living areas where energy efficiency is a priority without compromising comfort.

Moving up the scale, the HSU-12R04 offers a capacity of 1.2 kW, making it suitable for slightly larger rooms. This model retains the energy-efficient inverter technology and includes a turbo cooling feature, enabling rapid temperature adjustment on hot days. Its quiet operation ensures minimal disturbance, making it perfect for study rooms or quiet environments. Additionally, the HSU-12R04 model is equipped with advanced filters that promote cleaner air, enhancing the overall indoor environment.

The HSU-18R04, with a capacity of 1.8 kW, is tailored for medium-sized rooms. This unit boasts enhanced cooling performance and energy efficiency, accommodating larger spaces such as living rooms or open-plan areas. The model’s features include a remote control for convenient access, customizable cooling modes, and an intelligent self-diagnosis function that alerts users to potential issues, ensuring seamless operation.

Finally, the HSU-24R04 is the powerhouse of the series, with a capacity of 2.4 kW, making it perfect for larger homes or commercial settings. This model integrates state-of-the-art technology, including Wi-Fi connectivity for smart home integration and control via mobile devices. It also features a sleep mode that adjusts the temperature for optimal comfort throughout the night, enhancing energy savings further.

All models in the Haier HSU series reflect a focus on sustainability, combining low energy consumption with powerful performance. With features like multi-layered filters for air purification and modes designed for different seasonal needs, the HSU series stands out as a reliable, efficient choice for temperature control in various environments.