Heat Controller DMH09SB-0, DMC18SB-1, DMC12SB-0, DMC09SB-0 Heating Mode Operation, Defrost Control

Models: DMH12SB-0 DMH18SB-1 DMC24SB-1 DMH24SB-1 DMH09SB-0 DMC09SB-0 DMC12SB-0 DMC18SB-1

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Operation

While in compressor off, the indoor fan repeats low airflow speed and pause.

While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehu- midification operation and 4-min compressor off repeat.

Compressor ON Temp. Setting Temp+0.5°C(0.9°F) Compressor OFF Temp. Setting Temp-0.5°C(0.9°F)

In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

Heating Mode Operation

When the intake air temp reaches +3°C(5.4°F) above the setting temp, the compressor is turned off. When reaches the setting temp, the compressor is turned on.

Compressor ON Temp. Setting Temp. Compressor OFF Temp. Setting Temp.+3°C(5.4°F)

While in compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C(68°F), when above 28°C(82.4°F) , it operates with the low or setting airflow speed. When the indoor pipe temp is between 20°C and 28°C(82.4°F), it operates with Super-Low(while in sleep mode, with the medium airflow speed).

While in compressor off, the indoor fan is off when the indoor pipe temp is below 33°C(91.4°F), when above 35°C(95°F) , it operates with the low airflow speed.

If overloaded while in heating mode operation, in order to prevent the compressor from OLP opera- tion, the outdoor fan is turned on/off according to the indoor pipe temp.

While in defrost control, both of the indoor and outdoor fans are turned off.

Defrost Control

While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing, reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit.

After 40 min heating mode operation, at 4 min interval, whether to carry out defrost control or not and the time of defrost control are determined according to the following conditions.

1)While in heating mode operation, the maximum of the indoor pipe temperature is measured and it is compared with the present indoor pipe temperature to get the difference of the indoor pipe temper- atures (=the maximum temperature of indoor pipe & the present temperature of indoor pipe), according to which, whether to carry out defrost control or not is determined.

2)According to the need of defrost control shown above and the elapsed time of heating mode opera- tion at that moment, the defrost control time is determined.

3)When the determined time of defrost control is below 7 min, heating mode operation continues without carrying out defrost control. According to the procedure stated above, the determination is made again. When the defrost control time is 7 min or longer, defrost control is then carried out.

While in defrost control, the minimum temp of the indoor pipe is measured and it is compared with the present temp of the indoor pipe to get the difference of the indoor pipe temperatures (=the pre- sent temperature of the indoor pipe & the minimum temperature of the indoor pipe). When the differ- ence is 5°C(41°F) or higher, defrost control is completed and heating mode operation is carried out.

While in defrost control, if the defrost time determined before the start of defrost control is complet- ed, defrost control stops and heating mode operation is carried out regardless of the above condi- tion.

When the indoor pipe temp is 42°C(107.6°F) or above, defrost control is not carried out even if the condition is one of the defrost conditions above.

While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off.

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Heat Controller DMH09SB-0, DMC18SB-1, DMC12SB-0, DMC09SB-0, DMH24SB-1, DMC24SB-1 Heating Mode Operation, Defrost Control

DMH12SB-0, DMH18SB-1, DMC24SB-1, DMH24SB-1, DMH09SB-0 specifications

The Heat Controller DMC24SB-1, DMH18SB-1, DMH09SB-0, DMH24SB-1, and DMC18SB-1 are a series of high-efficiency air conditioning systems designed to meet diverse climate control needs. Each model is equipped with advanced technologies to ensure optimal performance, energy efficiency, and user comfort.

One of the standout features across this range is the incorporation of inverter technology. This technology allows the units to adjust the compressor speed based on the desired temperature, significantly reducing energy consumption compared to traditional systems. As a result, users can enjoy lower utility bills while maintaining a consistent indoor climate.

The DMC24SB-1 is particularly notable for its robust cooling capacity, making it ideal for larger spaces. It boasts a sleek design that complements modern interiors while providing efficient air distribution through its multi-directional airflow system. The unit is also equipped with a programmable timer and remote control for added convenience.

The DMH series, including the DMH18SB-1, DMH09SB-0, and DMH24SB-1, offers versatility in terms of size and cooling capacity. The DMH09SB-0 is perfect for smaller rooms, while the DMH24SB-1 can effectively cool larger areas. Each model in the series features a quiet operation mode, ensuring minimal noise when cooling or heating.

The DMC18SB-1 stands out for its dual functionality, providing both heating and cooling options. This model is equipped with an advanced Eco-friendly refrigerant that not only reduces environmental impact but also enhances overall system efficiency. Additionally, it features self-cleaning technology that eliminates dust and allergens, improving indoor air quality.

All models are designed with user-friendliness in mind, featuring clear digital displays and easy-to-navigate controls. Moreover, these heat controllers adhere to the highest energy efficiency ratings, ensuring they meet stringent environmental guidelines.

In summary, the Heat Controller line featuring models DMC24SB-1, DMH18SB-1, DMH09SB-0, DMH24SB-1, and DMC18SB-1 exemplifies cutting-edge heating and cooling solutions. With their advanced technologies, energy-efficient performance, and user-centric designs, these units are well-suited for both residential and commercial applications, offering reliable comfort year-round.