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Controlling HVAC Condenser Fans Using Pressure Sensors

  • US 20140360211A1
  • Filed: 06/07/2013
  • Published: 12/11/2014
  • Est. Priority Date: 06/07/2013
  • Status: Active Grant
First Claim
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1. A method of operating a heat, ventilation, and air conditioning (HVAC) unit operated in an earthmoving machine, the method comprising:

  • sensing a compressor output pressure;

    sensing a compressor input pressure;

    during a time period when the compressor output pressure is in an operating pressure range, controlling a speed of a condenser fan responsive to the compressor output pressure; and

    operating the condenser fan in a reverse direction responsive to the compressor output pressure being above the operating pressure range.

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