INTERACTIVE ELECRONIC THERMOSTAT WITH MINIMUM AND MAXIMUM TEMPERATURE THERMAL LIMIT SWITCHES

摘要

An interactive electronic thermostat (100) incorporates a safety backup system (130) to automatically activate the HVAC system (23, 24, 25) in the event that normal operation of the thermostat (100) is interrupted and the temperature in the conditioned area falls or rises beyond a predetermined range. The thermostat (100) operates to communicate with an installer through an audible or visual display (106) and keypad (104) to instruct the installer to perform tasks and enter observations to effect proper connections at the thermostat (100) of HVAC system (23, 24, 25) wires even in the absence of labels indentifying the functions of those wires. The thermostat (100) requires entry of coded indicia representing operator-observed conditions in the system in response to displayed instructions carried out by the operator.