A heat pump extracts heat from the surrounding air, thereby cooling its outdoor heat exchanger, known as the evaporator. At lower outdoor temperatures, typically below 10 °C, airborne moisture can condense on the cold fins of the evaporator and form frost or ice. This layer of ice impairs airflow and reduces the pump's ability to transfer heat to the pool water, leading to a drop in its performance and an increase in energy consumption. The automatic defrosting function uses sensors to monitor the state of the evaporator. If it detects frost formation, it automatically initiates a defrost cycle. During this process, it temporarily reverses its operation and begins to heat the evaporator until the frost melts. Once completed, the device automatically switches back to water heating mode. The entire process ensures smooth and efficient operation of the pump even in colder weather.
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