If you have a Lennox furnace that is not working properly, you will want to learn everything you possibly can about Lennox furnace repair.
Depending on the severity of the problem, you may be able to fix it yourself or you may have to call in a professional. First, you must find out exactly what is causing the Lennox furnace to malfunction before you can decide what to do about it.
If your furnace is just simply not working as it should, you may need a new air filter. When your air filter becomes dirty or clogged, it can cause the furnace to quit working properly.
Check your air filter by removing it from your furnace and looking to see if it is dirty. If it is, then replace it with a clean air filter and see how your furnace runs.
If after several minutes your furnace is running correctly, you will know that a dirty air filter was the problem.
If you are having problems with your furnace turning on properly, there might be a problem with your flame sensor. The flame sensor lets the furnace know that the pilot light is lit and that it is ready to turn on.
If the flame sensor is not working, the furnace will not switch on, even if the pilot light in engaged. If you think this may be the problem, you can try replacing it yourself or you can call a certified technician to do the job for you.
If you are having trouble diagnosing the problem with your furnace, there is an easy way to get help. Look on the front bottom panel of your Lennox furnace for a red LED light.
This light blinks a diagnostic code that can help you to determine what is wrong with your furnace. Watch the light to see how it is blinking.
For instance, the light might blink 2 short times and 1 long one. Once you have determined the pattern, you can simply look in your Lennox furnace manual to find out what the code means.
If you determine that the problem with your furnace is a faulty circuit board, it is advised that you hire a technician to replace it. This problem is not easily fixed by a novice and can cause quite a bit of damage if done incorrectly.
Originally posted 2010-07-31 12:54:26.