For Preparation of Heating("Hot Keep")

"HOT KEEP"is operated in the following cases.

When heating is started:

In order to prevent blowing out of cool wind, the indoor unit fan stopped according to the room temperature which heating operation is started. Wait for approx. 2 to 3 minute, and the operation will be automatically changed to the ordinary heating mode.

Defrosting operation (in the heating mode):

When it is liable to frost. the heating operation is stopped automatically for 5 to 12 minutes once per approx. one hour, and defrosting is operated. After defrosting is completed, operation mode is automatically changed to ordinary heating operation.

When the room thermostat is actuated:

When room temperature increases and room temperature controller actu- ates, the fan speed is automatically changed to stop under low temperature condition of indoor heat exchanger. When room temperature decreases, air conditioner automatically changes over to ordinary heating operation.

WARMING OPERATION

Heat pump type warming

With the heat pump type warming, the mechanism of heat pump that concentrate heat of outdoor air with the help of refrigerant to warm the indoor space, is utilized.

Defrosting operation

When a room is warmed with a heat pump type air conditioner, frost accumulates on the heat ex- changer of outdoor unit along with the drop of indoor temperature. Since the accumulated frost re- duces the effect of warming, it is necessery to automatically switch the operation to the defrosting mode. During the defrosting operation, heating operation is interrupted.

Atmospheric temperature and warming capacity

Warming capacity of heat pump type air conditioner decreases along with the drop of outdoor temperature.

When the warming capacity is not sufficient, it is recommended to use another heating implement.

Period of warm-up

Since the heat pump type air conditioner employs a method to circulate warm winds to warm the entire space of a room, it takes time before the room tem- perature rises.

It is recommendable to start the operation a little earlier in a very cold morning.

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Haier HDU-42HF03/H installation manual For Preparation of HeatingHot Keep, HOT KEEPis operated in the following cases
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HDU-42HF03/H specifications

The Haier HDU-42HF03/H is a remarkable addition to the world of cooling and heating solutions, designed to meet diverse climate control needs in residential and commercial settings. This sleek and efficient ducted air conditioning unit combines advanced technology with reliability, ensuring optimal comfort for users throughout the year.

One of the standout features of the HDU-42HF03/H is its impressive energy efficiency. With a high Energy Efficiency Ratio (EER) and Coefficient of Performance (COP), it minimizes energy consumption while maximizing cooling and heating output. This sustainability-centric design not only reduces electricity bills but also supports environmentally friendly practices.

The unit employs inverter technology, which allows for variable speed control of the compressor. This means that the air conditioner can adjust its cooling or heating power based on the room's temperature, maintaining a consistent environment without the constant on-off cycling of traditional systems. This translates to quieter operation and longer equipment lifespan, as it reduces wear and tear on the components.

Equipped with advanced air filtration technology, the HDU-42HF03/H helps improve indoor air quality by trapping dust, pollen, and other allergens. This is particularly beneficial for individuals with respiratory conditions or sensitivities. The unit is designed for easy maintenance, with accessible filters that can be cleaned or replaced as needed, ensuring optimal performance over time.

The Haier HDU-42HF03/H is also notable for its climate adaptability. It can efficiently operate in various ambient conditions, making it suitable for different geographical locations. Its robust build quality ensures that it can withstand the rigors of daily use.

In terms of features, the HDU-42HF03/H offers a user-friendly control interface, enabling easy temperature adjustments and mode selection. Smart home compatibility allows users to integrate the system into existing smart devices, providing enhanced control and convenience.

Overall, the Haier HDU-42HF03/H stands out as a reliable and efficient choice for those seeking a versatile air conditioning solution. With its blend of energy efficiency, advanced technology, and user-centric design, it is well-equipped to provide comfortable living and working environments year-round. Whether for cooling hot summers or efficiently heating during chilly winters, this unit is a commendable option for modern climate control needs.
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