HEAT PUMP WATER HEATER AND CONTROL METHOD THEREFOR

摘要

Disclosed is a heat pump water heater, comprising: a water tank; a detection unit used for detecting the temperature of water in the water tank to acquire the detected water temperature; a compressor, a motor coil of which has a multi-level winding, where a resistance value of the n-th level of the winding of the multi-level winding is less than that of the (n-1)-th level of the winding of the multi-level winding; a control unit which is connected to both the detection unit and the compressor, and is used for finding a winding corresponding to the detected water temperature to acquire a p-th level of the winding, and controlling the compressor to operate using the p-th level of the winding. Also disclosed is a control method for the above-mentioned heat pump water heater.