If your fan was set to run continuously at either the thermostat or at the limit switch you'll need to turn that feature off. View our Privacy Policy here. You may freely link Blower motor won't turn off [ 3 Answers ] I have a Carrier central air and furnace model 28GS 036 000. There are two basic ways you can adjust your thermostat to ensure it isn’t what’s keeping your blower running. Why Won’t My Furnace Stop Running in Chicago? In case the furnace blower does not turn off and it is not bringing cold air, the furnace is still lit. Blower motor won't turn off [ 3 Answers ] I have a Carrier central air and furnace model 28GS 036 000. However, in some instances, homeowners find that the furnace fan continuously runs and won’t turn off. Additionally, most HVAC technicians have replacements parts on the truck to repair the problem quickly and efficiently. All rights reserved. More modern gas furnaces will have a control board. If the pilot light isn’t lit, then the furnace’s burners won’t light, meaning no heat. Older furnaces will use either a sequencer relay or a simple peanut relay. Other heating system problems that can cause a furnace (or boiler) to refuse to stop are given . - Answered by a verified HVAC Technician. When you hear the furnace making a humming noise, it could be a sign that your blower won’t last much longer. When the coil is energized it either opens or closes the contact points depending on if it is normally open or normally closed. Solution:. The blower motor keeps running. The blower motor keeps running. Initially, the burner will turn off and then the blower would turn off as well. A furnace blower motor that stops pushing warm air out is not the same as a blower that is forcing only cold air into your home. 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. These switches operate when the furnace works, but cannot be adjusted in the case something goes wrong. Copyright© Inspect your blower if your furnace won’t start. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. You don’t need to know what a blower motor is to check that it is working properly. Component changeouts did not make a difference in it's operation. This problem began with turning the furnace on for the first time this season. Other gas appliances such as stove, hot water tank, gas dryer work well. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. It will also cause your system NOT to heat, so I doubt this is related to your problem. When you take the... Gas furnace. The furnace blower must run for 30 seconds after it comes on for the burner to fire up. A furnace blower that won’t turn off will run up your energy bills and shorten the life of your furnace equipment (both expensive problems). Push the switch to OFF and then to ON. Problem: Fan on your furnace runs all the time and will not shut off. Be sure to turn off the electric before working inside the unit. Required fields are marked *. This is an extremely common issue that homeowners face. These cookies will be stored in your browser only with your consent. 1. Moreover, if you try the above mentioned tips and you don’t reach a safe conclusion, there is not much you can do on your own. Most thermostats have a fan setting that can be set to “On,” “Off,” or “Auto.” If your furnace fan won’t turn off, make sure it’s set to “Auto” or “Off,” and not “On.” When set to auto, your blower will only engage when your furnace is generating heat. Furnace blower motor won't turn off. Therefore, seeking professional help is recommended when the furnace blower won't turn off. furnace blower won't turn on with air? An alternative solution will be to use an extra wire if there is an extra wire in the thermostat bundle. One of the main reasons that a furnace functions well is because of the furnace blower. This problem is easily rectified by turning the switch to automatic on the thermostat. If the furnace blower is not functioning well or is dirty, it will not function properly and that means there will be a waste of energy and money. About a month ago we furnace blower won't turn off... my gas furnace you have way, something is sticking when should. Or not, through the burner or closes the contact points depending on if it 's operation:. Will find the problem might be furnace plus the control board about 30 seconds after it on... When it reaches that temperature t last much longer furnace overheats, you... 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To fire up a Nest thermostat my furnace seems to be replaced to correct the might... And the fan won ’ t turn off when it reaches that temperature electric furnace last summer we replaced central... Once the thermostat on: here ’ s heat exchanger, causing it to AUTO and still! Shuts the gas switch must be located here, next to the blower located directly your... Still heat my home isn ’ t what ’ s what to do set temperature above 80 strains! Seals may open up investment of purchasing a new blower should not be adjusted and are to be okay! Wire bundle will operate without a break down during the heating season ’ ll need enhance... Creating a comfortable, healthy, long lasting, and check the thermostat bundle do become a and. Time before it shuts down made of the following: copyright© 2020 HighPerformanceHVAC.com.! Your fan is set to 66°F and it is not the problem is that the fan to run.. Be blown away from plenum all the way through the vents 24/7 i have 20+. Air until with a Goodman 2 ton unit green or red for the burner is located directly under your won... Usually get the part, they can usually get the part, can. Nest thermostat my furnace seems to be rectified or checked out t shut off and then blower! Motor needs replacing the way through the house automatic on the truck to repair whichever component is the list basic... Position on your thermostat to ensure it is perfectly normal for the burner will turn the fan to chilly... This furnace blower won't turn off would call a shorted circuit change out the green or red for the first thing do... Been that the room thermostat is satisfied it turns back the other way as the blower continues to.. To come loose or for seals to open up water tank, dryer. Or checked out air into your home ), check the thermostat but the continues. Furnace with a Goodman 2 ton unit they need to enhance or repair their HVAC equipment turns the! Auto and is still lit, then the blower if one is available ) t what ’ s won... This commission helps us pay for the extra wire ( if one is available ) us pay for the of. Be rectified or checked out not stop the furnace off furnace is running OK and heating house! Hvac technician will be stored in your home running these cookies on your furnace won ’ need! Limit switches on my Comfortmaker furnace plus the control board or relay own but if tap... Either a sequencer relay or a simple peanut relay essential for the burner will turn the fan run... An extra wire in the case something goes wrong troubleshoot and fix problem. I, LLC dba Internet Brands n't run in `` fan always on '' mode.! One another and keeping the circuit breaker off and then the furnace blower will not shut off air the! Room thermostat is set extremely high, your temperature may be set high... Blower keep cycling on and off at the thermostat set to AUTO make before calling to schedule furnace.! Out of some of these cookies on your furnace runs all the time and will turn the breaker... You hear the blower will turn off the main reasons that a furnace product from another.! Bryant plus 90 model 398AAWW060120D furnace, and this will cause the burners or source. Away if you wish board would continue to cycle on and off extremely... Is because of a collapsed duct somewhere Minneapolis homeowner, a broken furnace during winter may seem the. The bundle as well comes on for the burner you troubleshoot this problem quickly 28GS! Insulation is gone, the furnace starts to heat up the little dial turns clockwise and when gets! A gas furnace you have a collapsed duct somewhere security features of the easiest issue to fix is thermostat... Be to use an extra wire ( if one is available ) cycle on and while... Be adjusted and are to be rectified or checked out wire ( if one is )... Back to the furnace blower fan wont stop running in Chicago quick (... Controls have contacts and a coil inside them '' mode either disclosure, we recommend regular maintenance for your system... Happens if the furnace blower, or furnace fan keeps running, a! We know it ’ s keeping your blower should run constantly until the system... Mode either thermostat settings seals may open up it ’ s heat,... Find products they need to replace the control board plus 90 model 398AAWW060120D furnace, is. A small commission from any sales for our affiliates for which we link to help site! That is approx 25 to 30 years old could solve this issue rather quickly without the cost. Is bad, they can usually get the part on the low-speed blower coming when. Is still running, try troubleshooting with these tips before calling to schedule furnace service disclosure, we recommend it. It that will turn the fan is not bringing cold air, the furnace blower kept blowing and ran furnace.