CPC F25B 49/022 (2013.01) [F04D 27/00 (2013.01); G05B 15/02 (2013.01); F25B 2500/08 (2013.01); F25B 2600/0252 (2013.01); F25B 2700/151 (2013.01)] | 19 Claims |
1. A method for heating a compressor when the compressor is off, the compressor having a motor including a rotor and a stator, and a control assembly operably coupled to the compressor, the method comprising the steps of:
applying an initial current to the compressor motor when the compressor is off;
measuring a voltage across the compressor motor and determining a resistance of the compressor motor based on the initial current and a measured voltage, the determined resistance corresponding to a temperature of the compressor;
determining whether the determined resistance is less than or equal to a desired resistance, the desired resistance corresponding to a desired temperature; and
applying a secondary current to the compressor motor if the temperature is less than or equal to the desired temperature.
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