Loading patent…
AssigneeCarrier Corporation
InventorsRobert W. Peitz, Brian L. Merkel, Paul B. Kiningham
Estimating the term…
A system and method of heat exchanger freeze protection for an HVAC system by operating an indoor unit assembly and an outdoor unit assembly in a cooling mode and operating a fan at an initial airflow, operating a temperature sensor to measure a temperature value of a heat exchanger, at the expiration of a first predetermined time period, determining whether the temperature value is less than or equal to a first temperature preset value, determining whether a current airflow multiplier is equal to a maximum airflow multiplier limit, increasing the current airflow by an airflow offset multiplier if the current airflow multiplier is less than or equal to the maximum airflow multiplier limit and the temperature value is less than or equal to the first temperature preset, and operating the fan at an increased airflow to move more air across the heat exchanger.
A method of heat exchanger freeze protection for an HVAC system, the HVAC system including an indoor unit assembly further including a heat exchanger including a suction port and a liquid port, a fan, and a temperature sensor operably coupled to the heat exchanger;
An HVAC system comprising:
Dependencies are inferred from the claim text.