![]() ![]() This is important so gas isn’t pumped into your home with nothing to light it. If there is no pilot light to ignite the burners, the unit automatically turns off. The pilot sensor makes sure that the pilot light is on before sending gas into the combustion chamber. ![]() ![]() In the typical furnace, there are three different safety mechanisms that all have to be working properly in order for the furnace to run. If your furnace won’t turn on, it could be a safety precaution that is saving you from an even worse situation. That’s why there are multiple furnace safety switches that will shut down power to the furnace if a problem is detected. ![]() When you are dealing with natural gas, flames, and a combustion process, it’s important to have safeguards in place. If there is a proper air-to-gas ratio, the furnace flame should be a bright blue color, with perhaps a little tip of orange or yellow.ĭespite the efficiency and effectiveness of forced air furnace systems, there are still things that can go wrong. Gas flows into the burners, where it interacts with the ignition light. When you set the thermostat to heat, an electric signal is sent to your furnace’s control circuit, which turns on the ignition and opens the gas valve. If you want heat, you simply set the thermostat to “heat,” push the dial to the desired temperature, and voila! There’s warm air flowing throughout the home. Furnaces are remarkable pieces of equipment. ![]()
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