Patent ID: 8810419
Filing Date: 2014-08-19
Classification: F25B

Abstract:
1. A refrigerant charge monitoring system comprising: a first sensor operable for sensing temperature of a liquid refrigerant line that is connected to, within, or extending from an outlet of a condenser; a second sensor operable for sensing pressure of the liquid refrigerant line; and a controller configured to determine at least one target pressure value from the sensed temperature of the liquid refrigerant line, the controller being configured to determine if the level of refrigerant charge is at, above or below an acceptable level based on a comparison of the sensed pressure of the liquid refrigerant line to the at least one target pressure value; wherein the controller is configured to wirelessly receive outputs provided by the first and second sensors that are respectively indicative of the sensed temperature and sensed pressure of the liquid refrigerant line; and wherein the controller is a processor of a thermostat.