The overall process helps in keeping the inner part of the unit clean and prevents the growth of bacteria.
With this function activated, the indoor unit operates in low speed fan cooling mode for a certain period of time during which the condensation water will remove the dust from the evaporator fins. The unit will then continue into low speed fan heating mode by drying the inner part of the indoor unit. Finally, the unit passes into the simple ventilation mode and removes the remaining humid air.
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