HVAC AIR TEMPERATURE SAFETY SYSTEM

A system for operating an HVAC system in the event of a thermostat failure is provided. The system includes the steps of activating a safety control program upon determining the thermostat failure has occurred, resetting a first timer, determining if an amount of time in the first timer exceeds a first time period, activating an HVAC system blower when the time remaining first timer exceeds the first time period, measuring a temperature of conditioned air with a temperature sensor, determining whether the temperature of conditioned air is less than a preset minimum temperature, activating an HVAC system heating unit if the conditioned air is less than the preset minimum temperature, determining whether the temperature of conditioned air is greater than a preset maximum temperature, activating an HVAC system cooling unit if the conditioned air is greater than the preset maximum temperature, and repeating the process.