Patent ID: 8116911
Filing Date: 2012-02-14
Classification: F24F,F25B

Abstract:
1. A method of controlling a heating, ventilation, and air conditioning (HVAC) system, comprising: powering up the HVAC system; without respect to an ambient temperature, at least one of (1) operating a sump heater for a compressor for a first predetermined cumulative period of time in response to the HVAC system being powered up and (2) operating the compressor for a second predetermined cumulative period of time in response to the HVAC system being powered up; and in response to achieving at least one of the first predetermined cumulative period of time of operation of the sump heater and the second predetermined cumulative period of time of operation of the compressor, selectively operating the sump heater as a function of the ambient temperature after the compressor has been off for a third predetermined period of time.