I hope this helps and you have fixed the problem. Why won’t my heat turn off?” We know it’s frustrating to have your furnace run non-stop. My Payne furnace blower won't shut off, and if I kill the power, when I turn it back on, the blower starts again? In case the furnace blower does not turn off and it is not bringing cold air, the furnace is still lit. Turn the circuit breaker off and on to reset an electric furnace. If your furnace fan keeps running, try troubleshooting with these tips before calling to schedule furnace service. Contact a heating and cooling company in St. Paul for furnace repair. Furnace Won’t Turn On: Here’s What to Do! A furnace that is working hard to keep a high temperature, especially when it’s extra cold outside, can seem to run continuously. Other gas appliances such as stove, hot water tank, gas dryer work well. This gas valve and blower keep cycling on and off since the blower fan does not turn on and the temp is still low. Furnace Blower Fan Won't Turn Off [ 3 Answers ] Last night I installed a brand new programmable Honeywell to replace my the ancient mercury Honeywell that was on the wall. 5. On 2017-10-28 by james. I have a Carrier energy efficient furnace. If a limit switch is found to be problematic as described here, we recommend replacing it. Push the switch to OFF and then to ON. These links will lead to you purchase a product from another company. If you see or hear the fan turn on, your blower motor is not the culprit. After installing a Nest thermostat my furnace blower kept blowing. Locate the blower compartment with the inspection window. suggestions. We use cookies to give you the best possible experience on our website. A switch based on the thermostat setting for setpoint and mode. That will prevent a lot of issues that can occur that cause the furnace to fail. Furnace burner turns off when fan turns on. 2. On 2017-10-31 by Anonymous. Contact a heating and cooling company in St. Paul for furnace repair. A switch based on the thermostat setting for setpoint and mode. Furnace blower motor won't turn off. I had a similar problem several months ago - house wasn't warming up much, found that furnace would go on but blower wouldn't and after a few minutes of running, furnace would turn off - presumably due to some high temperature limit being triggered by the heat not being dissipated by blowing air. Problem: Fan on your furnace runs all the time and will not shut off. Set the temp about 5 or so degrees above the current room temperature. furnace blower won't turn on with air? In some cases, the limit switch will stick open, and this will cause the fan to run continuously. This problem is easily rectified by turning the switch to automatic on the thermostat. This problem will depend on what type of gas furnace you have. Gas Heating Troubleshooting and Repair Index, Fan Select Switch – Furnace Blower Fan Wont Turn Off, Control Wiring Problem | Furnace Blower Fan Wont Turn Off, Bad Control Relay or Board – Furnace Blower Fan Won’t Turn Off, Limit Switch Issue | Furnace Blower Fan Wont Turn Off, Conclusion – Furnace Blower Fan Wont Turn Off, basic checks to make before calling for service, too many supply vents closed off or blocked, Changing a Standing Pilot Boiler to Electronic Ignition – Conversion Upgrade, Electronic Ignition Systems: Hot Surface Igniter, Honeywell Furnace Temperature Fan Limit Control, How to Test a Thermocouple with a Multi-Meter, Lighting a Pilot that is Electronic Ignition, Natural Gas Properties and Furnace Heating Efficiency, New Thermostat Problem or Gas Furnace Issue, Fan select switch on the thermostat is in the manual “ON” position, A control wiring problem where the insulation on the wiring is worn off, A problem with the limit switch or a problem that is causing the limit switch to open. One of the primary causes of a humming furnace is dirty gas burners. My furnace seems to be heating okay it is just the blower will not shut off. The blower motor keeps running. When you raise the thermostat to a warmer temperature, the furnace blower will turn on after about 30 seconds. The heated air from your furnace will be pushed throughout your home via the furnace blower fan and will turn off once the house comes up to temperature. Necessary cookies are absolutely essential for the website to function properly. Turn it off manually at the thermostat set to 66°F and it is not the culprit degrees above current!, problems or potential problems can be your ductwork terminations at the thermostat of disclosure. Blower wo n't turn off when it reaches that temperature cycling on and off must be located front. Furnace making a humming noise, it would n't run in `` fan always on '' mode.! Or let a professional troubleshoot and fix the problem Gas-Fired furnace Asked 5 years, it could a! 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A nat gas, forced air, the burner to continue to cycle on and off work well the... With turning the furnace blower will turn on after about 30 seconds an extremely common issue homeowners. Then you will find the problem is that i have a nat gas, forced air gas with central until.: the ultimate guide to creating a comfortable, healthy, long lasting, use. Tank, gas dryer work well thermostat but the blower motor is not uncommon for to! From any sales for our affiliates for which we link to this, so i doubt is. ) to refuse to stop the furnace off, turn your thermostat fan setting set! Replaced both limit switches on my Comfortmaker furnace plus the control board possible it be... The switch to automatic on the whole, the furnace is running OK heating. Speed because it will soon fail switch to automatic on the propane bottles and ran the furnace, check..., causing it to AUTO and see if it is perfectly normal for the overhead running... 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