Need a furnace repair ASAP? If so, there is a good chance that the filter is too dirty to allow the furnace to work properly. When the fan in the on position, it will constantly blow air through the home. Viewed 8k times 0. my gas furnace isn't producing heat the pilot light is on and it's making a clicking sound what can I do? If the fan on your RV furnace runs but there is heat, the problem could be that the furnace has an insufficient air flow. A dirty air filter can interrupt the air flow over the heat exchanger and cause it to overheat. This is all too common, especially in a home with small children who love to play with just about anything. Furnaces have internal switches that can detect air flow. the best bet is the sensor rod is dirty and needs to be cleaned-- the rod is located in the area where the burners are usually opposite of the pilot, it looks kinda like a L laying down, turn power ro furnace off and clean this rod with a sandpaper or use a knife carefully just to get the crud off , then turn power back on restart the pilot light and set the thermostat to heat These newer systems will have a flame system to make sure that gas isn’t flowing without the heater being on. Then, check to be sure that the thermostat is set to a temperature high enough to trigger the furnace to emit heat. Make sure the thermostat’s fan switch is on auto in order to prevent cool air from being fed into your home. Before you call in a professional to, If you suspect that you are experiencing any of the common home furnace problems above, please don’t hesitate to give us a call. I have a old Luxaire gas furnace, and the problem i have is that the main burners won't light. Active 5 years, 7 months ago. The propane tank could also have a bad regulator or there might be a bad propane valve. Most likely, your furnace is making a clicking noise and not providing heat because your furnace’s spark igniter is trying to ignite your pilot light or burners but is failing to do so.. If your gas furnace doesn't start working at some point as you work your way through these troubleshooting steps, then the last step is to call a furnace professional. I live in an old house but never had any real problems with it. Many furnaces come with a red reset button. There is something seriously wrong with my furnace. share | … Can’t remember the last time you changed your furnace’s air filter? Please help me figure this out my family and I are in the north and its 50 degrees in our house. When he calls for heat, the pilot light turns on, but no hot air. A dirty furnace filter is one of the most common causes of furnace malfunction. How to Troubleshoot a Furnace With No Heat By James Cooper Things You'll Need. The first thing you want to do if your furnace won’t kick on is to check and see if the thermostat is set to heat and not the air conditioning function. Also, check the electrical switch at the furnace to make sure it is in the ON position. Pros recommend keeping at least 80 percent of your heating registers open to prevent unnecessary pressure in your furnace and ducts. 11437 Saint Charles Rock Rd Fortunately, this is usually an easy fix. I even checked for a stuck switch on thermocouple.??? So, the furnace is getting power, the fan works when "ON." First, confirm that the light is out. When Your Furnace Comes on but No Heat Comes out of Your Vents When winter hits and the temperatures drop, the last thing you want is a furnace that seems to be working, but isn’t actually blowing hot air through the vents. 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