Outdoor fan and indoor blower controller for heating, ventilation and air conditioning system and method of operation thereof

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United States of America Patent

PATENT NO 9909770
SERIAL NO

14577300

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Importance

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Abstract

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An HVAC controller, a method of operating an HVAC controller and an HVAC system employing the controller or the method. In one embodiment, the HVAC controller includes: (1) a processor couplable to at least two refrigerant pressure sensors via separate data paths to receive input signals therefrom and further couplable to a compressor stage and a condenser fan to provide output signals thereto, and (2) memory coupled to the processor and storing a software program having program instructions capable of causing the processor to command the compressor stage or the condenser fan to turn on irrespective of a state of an input signal generated by either of the at least two refrigerant pressure sensors, and generate an error message at least partially depending upon whether or not a high pressure shutdown occurs after the processor commands the compressor stage or the fan to turn on.

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Patent Owner(s)

Patent OwnerAddress
LENNOX INDUSTRIES INC2140 LAKE PARK BLVD RICHARDSON TX 75080

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chamorro, Carlos O Plano, US 7 116
Hundt, Roger C Carrolton, US 6 121
Stachler, John P Plano, US 9 102
Walter, Stephen A Carrolton, US 17 210

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