Why is my gas furnace not getting gas?
Common types of natural gas issues include gas leaks, blocked gas lines, and malfunctioning gas valves. If the gas line is off, simply turn it back on. If the furnace won’t ignite after doing this, call an HVAC professional to check for other potential problems.
Why is my furnace not blowing air?
After ruling out all of the possible problems above, the most likely cause of a furnace not blowing air is a problem with the blower fan, or with the furnace fan limit control switch, which would require a more advanced troubleshooting, best left for an experienced HVAC technician.
Why is my furnace just clicking?
1. Why Is My Furnace Making A Clicking Noise? If your furnace is constantly making a clicking noise then you are likely looking at a mechanical malfunction of some sort. A clicking furnace is often caused when the furnace’s spark igniter tries to ignite the pilot light or burners.
How do I get my Lennox furnace out of idle mode?
Examine your furnace and look for a raised button or switch to the right of the ignition control box (or the “Limit Control” switch). Press and release the limit control switch to rest your Lennox furnace.
What are the most common Lennox Furnace troubleshooting issues?
When Lennox furnace troubleshooting, some of the most common issues include: If your furnace just stopped working, it could indicate an issue with the thermostat. Sometimes, either the thermostat has been switched off accidentally, or the thermostat has completely gone out. This can cause the unit not to come on.
Why is my furnace not blowing out heat?
If you arrive home or arise in the morning to a cold house, it could be that the thermostat is set on a low setting, which can cause the furnace not to put out heat. If the igniter fails, it will also cause the furnace not to produce heat.
How often should I change the filter in my Lennox Furnace?
If your Lennox furnace uses a disposable filter, it may need to be changed. In fact, it is recommended that the filter is changed once every three months. If your filter hasn’t been changed in a while, simply check the filter to see if it is dirty.
What should I do if my furnace pilot light is out?
If the pilot light is out, follow the instructions in your owner’s manual on how to relight it, and then try to relight it. If it still does not come on, the pilot light housing might need to be cleaned. Simply turn off the gas leading to your furnace, and then clean the light housing.