HEAT WON'T TURN OFF - separate article to see if the problem is definitely not the thermostatįirst Step: Change the thermostat setting up or down.STEP 4: IF THE PROBLEM is NOT THE THERMOSTAT.STEP 2: CONFIRM PROBLEM in THERMOSTAT or WIRES.Here we discuss how to diagnose & fix a thermostat that keeps calling for heating or cooling when it should not.Ī separate article, HEAT WON'T TURN OFF, gives diagnostic procedures for other reasons why building heat wont' turn off besides problems at the thermostat itself. Thermostat Troubleshooting: heating or cooling system won't turn OFF We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. We provide a sequence of diagnostic steps that determine if the problem is at the thermostat, the thermostat wiring, or at other heating or cooling system controls. ![]() We explain how to diagnose and fix thermostat switch settings, switch settings right at the air conditioner or furnace air handler, and we review thermostat wiring problems that cause a heating system or cooling system to stay ON when it should not. We have no relationship with advertisers, products, or services discussed at this website.ĭiagnose & fix heat that won't turn off when it should: here we discuss various causes of too much heat or of a heating system that does not shut off when it should. ![]() InspectAPedia tolerates no conflicts of interest.
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