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REMOTE CONTROL OF AN HVAC SYSTEM THAT USES A COMMON TEMPERATURE SETPOINT FOR BOTH HEAT AND COOL MODES

  • US 20150127176A1
  • Filed: 01/14/2015
  • Published: 05/07/2015
  • Est. Priority Date: 09/21/2010
  • Status: Active Grant
First Claim
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1. A method for controlling a mini-split system HVAC unit via a thermostat that is located remotely from the HVAC unit, the HVAC unit having a cooling mode and a heating mode for conditioning air in the inside space, the HVAC unit having an onboard controller that is configured to control whether the HVAC unit is in the cooling mode or heating mode, and whether the HVAC unit is activated or not, the onboard controller of the HVAC unit is configured to accept input signals wirelessly transmitted from the remotely located thermostat, the method comprising:

  • the remotely located thermostat comparing a sensed temperature in the inside space with a setpoint, and determining if the sensed temperature is different from the setpoint by at least a predetermined amount; and

    if the sensed temperature is different from the setpoint by at least the predetermined amount, the thermostat wirelessly sending one or more input signals to the onboard controller of the HVAC unit, the one or more input signals causing the onboard controller of the HVAC unit to set the HVAC unit to a particular one of the cooling mode and the heating mode, and to activate the HVAC unit so as to condition the air in the inside space in the particular one of the cooling mode and the heating mode in accordance with a control setpoint.

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