Jump to Latest ... 2012. even after the temp inside the house has been reached and passed. are already performed. Air feels very fast, brief, and harsh out of vents in home. It may be only the blower motor that’s running and not the entire furnace. The furnace keeps running and continuously heating after the set temperature is reached. By Staff Writer Last Updated Mar 26, 2020 1:48:50 AM ET In a gas furnace, the blower will continue to run if the fan switch on the thermostat is set to any setting other than auto. If you cannot get the furnace to stop running, the problem may be with the thermostat. Why is my furnace running constantly? It does this repeatedly and never actually heats the house. All other items such as reset, updating to latest SW etc. ... Carrier 58SXA Gas Furnace shuts off before temp reached [ 9 Answers ] I have a Carrier "Weathermaker" 58SXA gas furnace that has recently starting acting up. They control how long the blower runs after reaching the desired temp. The furnace will get stuck, run constantly, and keep heating the house. Your blower should run constantly until the heating cycle ends. Specific. We turn it on, set it to 68 degrees, and wait. That takes time. Dust and dirt restrict airflow—and if the filter gets too clogged, the heat exchanger will overheat and shut off too quickly, and your house won't warm up. To do this, feel the air coming from the vents; if it’s warm, the furnace and blower are both running. Hello! I just installed a Honeywell programmable thermostat and set it to 65. I also followed one thread where it was suggested to switch G to Y1 and Y1 to G wires. We have 3 zones Only the zone controlled by this thermostat is affected. Thermostats will often fail after a number of years of use. Why Does the Blower on My Furnace Keep Running? This is a very common furnace problem, and can be very frustrating if you are trying to maintain a comfortable indoor environment at just the temperature you like. If you find yourself thinking, “Why does my furnace shut off before reaching the temperature I’ve set”? Details. Now, many of you must be thinking after reading about all of these safety features, that your furnace keeps turning on and off because one of these has failed. For example, at 5pm the furnace is set to to go to 72 degrees. 0. “Winter is getting colder in Michigan, and my family is having issues with our furnace. I have a Lennox electric furnace (heat pump w/ aux heat I believe) that's about 10 years old. The thermostat is a basic Honeywell digitial. This switch keeps the blower running after the call for heat has been satisfied in order to extract the heat from the furnace, which is … put the temp at 68 at Tstat, gas heat comes on room temp passes ... the heat pump continues to run even after the set temp on tstat has been reached. I have a York model number ahp24b3xn21a furnace. Dirty filters are the most common cause of furnace problems. It is supposed to stay on for two to three minutes after the furnace shuts off in order to push the last of the warm air out into the house. This article was originally published in November 2015. Furnace Won’t Start or Keeps Running After Temperature is Reached in Hampden, MA. My furnace's motor keeps running after heating the home. Test the thermostat by setting the temperature to one or two degrees warmer than room temperature. Turn on the Heat switch. On a normal 32-degree cloudy day, to hold 68-degrees, furnace cycles on 4-5 time/hour. Our furnace thermostat failed after an adjacent water heater installation. But it sounds like your problem is the thermostat is in the wrong location, and/or your ducts to some rooms are more obstructed than others. Wait to hear the clicking sound that indicates the furnace has kicked on. https://www.petro.com/.../furnace-ac-fan-constantly-running If your furnace is running constantly, it’s a sign that you may have a problem. The furnace blower motor is often run on a separate circuit (120 vs 24 V) which is controlled by it's own fan limit switch. ON makes your furnace’s blower run non-stop but AUTO will tell your furnace’s blower to run only when heat is being produced, so it should shut off once your home reaches the desired temperature. My furnace keeps running after the set temperature is reached. This is a goodman heatpump/furnace. In normal operation, your furnace blower fan should come on 1.5 to 3 minutes after your thermostat calls for heat and should turn off several minutes after the heating cycle ends. Heat keeps running. A furnace fan normally keeps blowing after the heating element shuts off, until the internal furnace temp drops to a set point/til a set time; that point should be adjustable. Thank you for your help. Before you contact P. Gagnon & Son to request a service call, there are two things you can try to see if you can solve the problem. During the middle of winter, a broken down furnace is something no one wants. No air would be better than blowing cold air! Lennox furnaces are quality units; however, similar to other furnaces, Only after al of these steps have taken place, will your furnace begin to run in normal operation (which is why it take a while for your furnace to turn on after you put it in heat mode). Troubleshooting tips when your furnace keeps running after the set temperature is reached. If the blower is running but no heat is coming out, replace the filter. My issue is that it appears that the furance blows cool air when the target temp is reached according to the programmable thermostat. Contractor's Assistant: Do you plan on doing the work yourself? Reader Question: possible shorted thermostat wires. When your furnace isn’t actually heating, though, your furnace blower shouldn’t be running at all. If heat keeps running (more than a couple of minutes if you have warm air heat), something else is wrong. I have an old weil mcclain oil fired boiler with a beckett rwb burner and a white rodgers control unit. Note: If your thermostat fan is set to ON, your furnace isn’t actually running non-stop—just the blower fan is. Suggestions, besides moving to a place with gas heat. There is some other problem we haven't thought-of. With routine maintenance, tune-ups, and inspections before the … It would probably keep running but I turn the thermostat to off, which kind of defeats the purpose of installing a programmable thermostat. February 24, 2018 AmbientHVACAdmin Blog No Comments. Keep in mind, you're not just cooling the air, you're also cooling the contents etc. Coleman electric Furnace blower keeps running after temp is reached. You are not alone. Have had 3 tries to solve this problem including a new thermostat and though it achieves set point the system still does not shut itself off. 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