Patent ID: 6089310
Filing Date: 2000-07-18
Classification: F24F,H01H

Abstract:
A thermostat for an environmental temperature control system having an AC system power source, a temperature load comprising one or more members of the group consisting of heating loads and cooling loads to which electrical power from a low voltage side of the AC system power source can be selectively applied through latching relays, the thermostat being operatively coupled to the latching relays to selectively control the application of power from the low voltage side of the AC system power source to the temperature load, the improvement comprising the thermostat having:a sensor coupled to the temperature load and generating a first indicator signal indicative of power being applied to the load; anda controller having a load sensing input and a load controlling output, the load sensing input being coupled to the first indicator signal for causing the load controlling output to pulse the latching relays when the sensed power applied to the load does not correspond to that selected by the thermostat.