Lennox Industries Inc.

Terry Jewell

Harold Gene Havard, Jr

Yi Qu

Eric M Perez

Der-Kai Hung

In various implementations, an air conditioner may include more than one expansion device. Refrigerant flow through the expansion device(s) may be controlled based at least partially on an operational property of the air conditioner.

Air conditioner with multiple expansion devices

An inverter controller, a method of operating a controller and a field-installable kit. In one embodiment, the controller includes: (1) a thermostat interface configured to receive conventional thermostat signals providing for a ventilation mode, first- and second-stage cooling modes and at least one heating mode and provide relay control signals for an inverter forward start relay, first- and second-stage cooling speed select relays and at least one heating relay and (2) an inverter controller coupled to the thermostat interface and configured to receive the relay control signals and provide an inverter forward start signal, an inverter high speed set, an inverter medium speed set and an inverter ventilation speed set.

Growing community of inventors

Dallas, TX, United States of America

Terry Jewell