Regardless of the warm weather that we usually see in Las Vegas, you will find that you will still need a furnace in your home to keep you warm during the few months that it is cold. When you rely on a natural gas burning furnace to keep you warm, it is important to know the ins and outs of that furnace in case you run into any issues. One vital part of your furnace we would like to talk about today is the limit switch. Hal Mechanical is here to talk about what a furnace limit switch and why it is so important.
What is a Furnace Limit Switch?
It is important that your furnace isn’t posing any threat to your home as it works to keep you comfortable. One of the safety mechanisms found in your furnace to keep your furnace from overheating and becoming an increased risk of a house fire is the limit switch. It is responsible for ensuring the temperature doesn’t get too high when your furnace is working. If there is a temperature increase, it will cut the power to the burner to protect both the furnace and your home.
Common Furnace Limit Switch Problems
Just like any other working part of your furnace, the limit switch can experience issues and need to be repaired or replaced. Here are some of the most common issues with a furnace limit switch.
– Dirty Contacts: If there is some dirt or corrosion where the switch makes contact with the furnace, it can lead to issues. This can be cleaned with a soft bristled brush or a clean cloth to avoid reduced function from your limit switch due to dirty contacts.
– Incorrect Wiring: If there is an issue with wiring, you could run into issues with your limit switch as well. It is important that the limit switch is wired properly to avoid running into issues.
– Blown Fuse: Sometimes, the furnace limit switch can cause a blown fuse that you will need to have replaced.
– Calibration: When you have to repair or replace the limit switch, you will more than likely need to recalibrate it for it to work properly.
How to Troubleshoot a Furnace Limit Switch
If you have an issue with the limit switch in your furnace, you can try a few things to resolve the issue on your own before you call on an HVAC repair technician.
– Check Wiring: Make sure all of the wires that are connected to the limit switch are in good condition and are connected right.
– Reset: Sometimes, it can be helpful to turn off the furnace for a few minutes and let it reset.
– Fan: The limit switch will only work properly if the fan it spinning correctly.
Forced Air Furnace Heating Services & More in Aliante, Centennial, Desert Shores, Eldorado, Enterprise, Green Valley Ranch, Henderson, Lone Mountain Village, North LV, Peccole Ranch, Paradise, Silverado Ranch, Spring Valley, Summerlin, Sunrise Manor, Tuscany Village, Whitney, Winchester & Las Vegas Nevada
If you’re having a hard time with your furnace not working properly, you can turn to Hal Mechanical to help you figure out what is going on. We will diagnose the issue and will work to get your furnace up and running in no time. Call us today!
