Thermostat problem
Ensure your thermostat is set to the “auto” setting and not the “on” setting and that the indoor temperature is what you want it to be. Your furnace will run if it is set to “On.” Your furnace will operate until the required temperature is attained if the setting is “Auto.”
If your thermostat settings appear to be accurate, but your furnace still runs, your thermostat may malfunction. Call our HVAC specialist to inspect, calibrate, or potentially replace it.