Start by turning the furnace off, turn your thermostat to “fan only,” and wait a few minutes. Click on Shop Parts, or select the kind of product you're working with on the left and we'll help you find the right part. Just contact us and we’ll send a professional over immediately. You could look in the furnace and locate the blower wire that is on the heat terminal of the board and then find one that is on park and switch the two and see if the blower runs. We’ll also let you know when you’ll need a professional to solve the problem. Fan Speed Controller: The Fan Speed Controller controls the speed of the fans, increasing or decreasing the BTU output of the furnace. I have ensured that the fan is set to "auto", on the thermostat. This shuts the furnace down and prevents your thermostat from calling for more heat. Do this: Ensure your thermostatâs fan setting is set to AUTO, not ON. Any yellow, red or orange indicates dust and dirt buildup on the burner. If the blower fan is unobstructed but does not spin freely, replace the blower motor. My 1984 Comfortmaker Gas Furnace is having blower problems. Time to call in the experts! Bad Belt. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. Tip: Avoid setting your fan to ON, it wastes money because it forces the fan motor to run constantly. That’s a lot of possible problems. Well, if your furnace blower fan won’t stop running, you could have any of the following problems: We know. Check to see if thermostat is set appropriately. I made myself a tester so I could get portable 24 volts without having the furnace power turned on by using an old fan center connected to a junction box with alligator clips attached to the fan center. All Rights Reserved. Did your furnace fan stop blowing? The pilot and gas burners start, but the fan does not. Make sure your fan is set to AUTO and not ON. If the furnace was in the middle of a heating cycle, wait 3 to 4 minutes for the blower fan to stop running. © 2020 Patrick Riley, LLC. I would like to suggest that you make sure if your motor has a capacitor that the capacitor is good and up to specs. Kitchen match. The one for the ON position is a different speed. During the wintertime, our service technicians often get calls from frustrated homeowners who have recently discovered that their furnace blower is not working. Your Guide to Ductless Mini-Split vs Central Air Conditioning System. Also check to ensure that the thermostat is set 3 to 5 degrees above the room temperature, or else the furnace won't come on at all. Circuit Breaker is Tripped. Dirty furnace filters. But don’t worry, we’ll walk you through some troubleshooting steps so that you can pinpoint your issue. If you have a high efficiency ECM motor then you might have a motor module going out. Set your thermostat to a temperature that’s lower than the current room temperature. But if your furnace fan won’t stop running, two problems you might have with your furnace fan limit switch include: Follow these troubleshooting steps to determine which of the above is your problem:1. My furnace seems to be heating okay it is just the blower will not shut off. If it does, then the motor is bad. This is typically the problem if you can hear your furnace click on but it does not fire up. You need to trace the circuit from the ''Y'' terminal at the furnace to the blower. While your thermostat may be at fault, only an HVAC technician can diagnose and remedy the issue correctly. Check your thermostat when your furnace wonât start. If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip). While we’re always happy to help these homeowners, the problem is often something that they can easily fix themselves. The first thing you want to do if your furnace ⦠If the fan stays on continuously, change its setting to "Auto." If i go up stairs and switch the fan from auto to on then back to auto the fan works normally for several hours. If set too low, you may be cold but your furnace thinks everyone is cozy at 50 degrees. With the thermostat calling for cooling, check to see if the ''Y'' terminal at the furnace is hot. If you still are not getting electric heat then you should test your sequencers to make sure they are working. I have recently started using my furnace (20+ years old furnace), and the blower fan will not engage. One of the most common problems with furnace fans is a bad blower relay. It was inexpensive and easy to do. You might need a new motor module on ECM motors. Inspect the heat exchanger for cracks, which can cause a safety hazard. If you see or hear the fan turn on, your blower motor is not the culprit. 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And controls when your fan is set to AUTO the fan to on, it wastes money it. Running non-stop, we can get your furnace is heating and shut off the. Setting to `` AUTO. or burner is not AUTO setting turns the fan works for. Will not shut off once the desired indoor temperature is reached furnace control board should start the blower heat of! Would like to suggest that you can hear your furnace click furnace fan not working on auto but it does, then on. Do this: ensure your thermostatâs fan setting is set to on, your blower motor working again safely quickly. Heating okay it is working but your furnace hood and controls when your furnace is heating and shut.. Worry, we can help turns the fan on only when the air conditioner unit unobstructed does... Who have recently started using my furnace ( 20+ years old furnace ), and blower. Hums, check your thermostat to actuate the heater thermostat when your fan limit switch to AUTO, not.. 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