If you notice that the blower on your
furnace
is constantly running and never seems to turn off, there are two things to check. Confirm that the thermostat is set to the fan setting. Leaving it on the auto settings means the fan is running, but no air is being produced. If that doesn’t clear anything up, your next step is to check the fan limit switch. The limit switch is a safety measure. When your unit overheats, the fan limit switch will shut down the system. There are a few things that can cause this.
The first being your system is a bit older and might truly be overheating.
Two things can cause a blower to run continuously: the room thermostat or the limit switch located on the furnace just below the plenum (the box that distributes heated air to all the ducts). The limit switch shuts off the furnace if the air in the plenum gets too hot. Check the thermostat to see if the fan switch has been turned on. If it has, turn it to off or to auto. If it is set to off or auto, the furnace’s limit switch must be adjusted. Call a furnace repair technician to adjust the limit switch, or follow the instructions in your owner’s manual to reset the pointers on the fan side of the limit control.
If your goodman furnace won’t turn off, the first thing to check is your thermostat. Ensure it’s set to “heat” and “auto” (not “on”). The temperature should be set around 72℉. If the temperature is set too high, it could cause this problem. Your home may be allowing hot air from the furnace to escape. Check for drafts around windows and doors. The environmental protection agency has some good tips for air sealing. Consider investing in draft stoppers and weatherstrip to keep hot air in. Other causes of a constantly running furnace may be a faulty limit switch, a broken power control board, or a malfunctioning thermostat.
Check Your Electric Ignition or Pilot Control
When troubleshooting your appliance doesn’t solve your furnace issues, never hesitate to contact a trained hvac contractor. Any furnace, regardless of its age, may pose combustion or gas-related safety hazards, so it’s always a good idea to have an expert examine the unit and suggest the best course of action.
Furnace installation: if you need to replace your furnace , use a furnace contractor’s expertise to determine the right type and size for your home or commercial space. Ignition control or pilot light problems: as problems may result from clogged components or faulty electrical components, leave ignition issues to the experts.
Believe it or not, many homeowners rarely check their filters when their furnaces fail to start up. Instead, they end up footing expensive service call bills. A gas furnace uses a mixture of lp or natural gas and air. If there’s a restricted airflow in your system, it won’t produce the necessary mixture, leading to ignition issues. Next time your furnace fails to ignite, check the air filters and remove anything that might interfere with the airflow. However, if your furnace’s pilot light won’t stay lit, it’s wise to call in a professional to look for several possible causes.
Ignition control problems can be a great source of frustration for many homeowners, especially during the cold winter months. These problems occur when there are dirty or clogged components of the pilot light system or when they are worn out. Additionally, there are times when the flame sensors are improperly positioned, which causes them to be unreliable during the ignition stage of heating the home. Various gas supply problems and electrical issues can also lead to problems with the pilot control, leaving you with challenges in using your furnace effectively. If there’s an issue with the ignition system in your furnace, here are some things you can do:.
The thermostat is a device that communicates with your furnace to let it know when it should turn on and how hot it should make your home feel. If the thermostat stops working properly, it can seriously impact your furnace’s performance output. You may notice problems like sporadic heating, short cycling, or the inability to turn on or off. Your home may feel unusually cold or excessively hot. It’s possible that your thermostat has died and needs to be replaced, but the problem could be as simple as dead batteries. Swap out the old batteries for a fresh pair to see if that helps.
If you feel like some parts of your home are cold, while others are uncomfortably warm, your hvac system may have some balance problems. Here are a few reasons the areas in your home may be improperly heated: undersized heating system. Small conventional furnaces , heat pumps, or oil furnaces may not be large enough to heat your entire home, especially if additions have been made to your home. You can correct an undersized heating system by adding a secondary heating system like a ductless mini split to specific areas, or by replacing your existing unit. Oversized heating system. Furnaces that are too large for a home can warm the air close to the furnace too fast, which signals the thermostat to turn off early before temperatures throughout your home even out, causing short cycling.
The thermostat is the brains on all heating and cooling units. If the thermostat is malfunctioning, it causes miscommunication and can improperly provide heating. Furnace problems associated with a broken thermostat can include short cycling or the inability to turn on. If you are experiencing any of these issues, first ensure the thermostat is turned on and has working batteries. If so, make sure the thermostat is set to “auto” instead of “on. ”.