Step 1: Check for … Your furnace blower fan not starting can have a few … The problem can either be a major one or a minor hiccup that can be solved within minutes. ... An intermittent pilot system uses an electronically controlled high-voltage electric spark to ignite a pilot light—and subsequently the main burners_when the thermostat calls for heat. If it’s On, try setting it to Auto — this will turn the fan off when the … At your house, you set your thermostat to keep your home at a preset desired temperature. The heat exchanger won't work unless enough cool air moves across it to keep it from overheating. For your electric furnace to turn off, there has to be a problem within the unit. If the breaker “trips” (cuts flow of electricity), the furnace won’t turn on. As we discussed earlier this week, a dirty air filter can cause all kinds of problems with your furnace. Oftentimes, the issue is as simple as a unit that’s turned off, a tripped breaker, or a blown fuse. Make sure that your filter is clean and contact Jerry Kelly if your system still won’t turn on after replacing it. If this is the case the first thing you should try is simply resetting it. i replaced the thermostat with a programmable one, it worked fine for a couple of days, but it wont shut off again. Furnace won't run: 1. Your furnace will run until it satisfies that preset temperature. Discussion Starter • #1 • Feb 17, 2013. Even disconnecting the thermostat altogether won't stop it. If the furnace starts, the problem is either with the thermostat wire or thermostat. How it works is that the ignition sensor tells the furnace when it senses a flame – unless a furnace has a flame, it won’t turn … The ignitor sensor is the part of the furnace that tells your furnace whether there is a flame in there. Each winter we get the question “Why won’t my furnace turn off?” Your furnace is designed to work in conjunction with your thermostat. I tried checking the two sequencers by placing a continuity tester across the terminals and then energizing the coil with a 24 volt supply, unfortunately I could not get them to work. If it won’t kick on check for a blown circuit breaker and look to see that any associated wires haven’t been chewed through by rodents or become corroded. Contact a heating and cooling company in St. Paul for furnace repair. I did turn the breaker switches on and off a few times while installing them. Troubleshooting an Electronic Ignition Furnace That Won't Light. Wait 30 minutes; press reset button. So take a look at these most-common causes of failure of the AHU blower fan to run. Don’t go calling your furnace repairman just yet, though. Whether you have a gas or electric furnace, both use electricity to run the fan and therefore need a circuit breaker. The electric input in your furnace could be … When the sequencer stops working correctly, such as having one of its heat reactive circuits burn out, it often means the furnace’s heating elements either won’t turn on at all or only a few will. The idea of paying for a service call may be worrisome as well. An electric furnace works by turning on a series of electric heating elements that generate heat through coils, much like the heating elements in a toaster or electric oven. ... Burners ignite but turn off after a few seconds; This is a common problem with most furnaces. If you have an electric furnace then it might use an electric ignition to start the pilot light. (We ran wire for electric furnace but realized our error, changed the wire but forgot to switch the circuit breaker to a lower amperage.) This way you won’t have to worry about the temperature sensors on your thermostat interfering with your reboot. I could hear the relays clicking occasionally so I investigated a little and found the elements are heating up and cycling, the relay inside the thermostat cycles (not repeatedly just when you turn … Install a new filter to allow it to breathe easier. Now we can continue by assuming you're convinced the trouble is right in the air handler. Electric or gas, the furnace still needs power to operate. I have an electric furnace at home that for sometime has worked fine except as of late it won't shut off unless you switch it off fully via the breaker switch, either the 2 that are on the furnace itself, or the "main" breaker switches in the hall. Refer to your user manual to locate the ignitor. The control board sends power to the ignition system, which fires up the system. No Pilot Light . Your Electric Furnace Won’t Turn On Before you call a heater technician for a furnace that won’t turn on, it’s a good idea to make sure that the problem isn’t easily solvable. Electric Furnace Won't Shut Off I had the same problem with my Coleman Presidential 2 electric furnace in my mobile home (1980). This may seem like an obvious step, but many people either neglect its importance or forget to do it. i have a Coleman evecon eb17b electric furnace that will not shut off. Electric Furnace Troubleshooting. Sometimes those problems can cause your furnace to shut down and prevent it from starting up again. The good thing is that it is easy to identify and fix. The first thing to do is check the thermostat. Your Furnace is not Receiving Power . I just rewired my house and accidentally sent too much power to my gas furnace. Motor overload. And if not, our expert heating technicians are always available to help. Here’s what you should do when you’re faced with a furnace that won’t turn on. Finding that your furnace is on the fritz mid-winter is every Denver homeowner’s nightmare. Check the power: The power switch to your furnace should look like a light switch.Make sure it’s in the on position. I tried installing a digital thermostat earlier but the furnace wouldn't turn on. If your furnace wont shut off and you’re worried, don’t panic. Check the Pilot Light. I pressed the reset button and it turned on for … it continues to blow out hot air, even when i turn it off at the thermostat, i end up having to turn it off at the main breaker. Whether the trailer furnace runs on electricity or propane, it will have a power switch. I came home from work last night, turned the heat on and it didn't work as advertised. Tie the red and white wires together, and switch the power on. A problem with your electric furnace can be a serious concern during the coldest months of winter. when i do that, i leave it off for a bit, turn it back on, and the furnace … Turn off the gas and electricity to the furnace, then use a pin to clear out any debris. 1. Check whether your fan is set to On or Auto. 2. In the meantime, here’s what to do if your furnace won’t turn on. Turn it on if the furnace power is … Most newer units have electric ignition. Verify the unit has power. Not enough … Turn the furnace off and then on again and listen for a spark. Heat won't start or lost capacity: if your heating system or heat pump (warm air heat) won't start at all, see HEATING LOSS DIAGNOSIS-FURNACES. But the heating elements cannot all turn on at … No power. Check for blown fuses or tripped circuit breakers at main entrance panel, at separate entrance panel, and on or in furnace; restore circuit. Section 2 – If Your Furnace Won’t Turn Off After Your Set Temperature Has Been Reached. Remove the front panel and look for the ignitor/sensor. It's the most likely reason your heat won't turn on. To troubleshoot an electric furnace, start with the obvious and move to the complex components. With some simple troubleshooting, you might just be able to fix the problem on your own. But, when your electric furnace won’t turn on, there’s no need to panic. Make sure that your control unit is set to “heat,” and not “cool” or “auto.” If you set the temperature on your thermostat to turn the furnace on, it won’t do anything if it’s not turned to “heat.” However, if the control board is defective, it may not be sending power to the ignition system, which will prevent the furnace … 3. And more often than not, the problem is that your furnace is just plain dirty: A dirty blower motor can lead to equipment failure. Replace the wire or thermostat to fix the problem. If your furnace won’t turn off even after your house is at or above your programmed temperature, then the problem is usually more complex. Check the Furnace Filter. It’s a safety feature that helps to ensure that your furnace only ignites when it’s safe to do so. 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