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== Electronic Ignition ==The electronic ignition system in a gas furnace is a more efficient way to light the burners than the old pilot light system. The electronic ignition occurs typically in one of two ways, Intermittent Pilot, or Hot Surface Ignition. The intermittent pilot system uses an electronically controlled high voltage electrical spark to ignite the gas pilot and then subsequently the main burners when the thermostat calls for heat.The hot surface ignition system uses an electronically controlled resistance heating element, not unlike a light bulb filament (and shown in the photo above), to ignite the gas burner.[[File:Norton20165703S.jpg]]<BR>Illustration:The Norton Model 601 is an example of a hot surface ignitor. Here is an [http://homeguides.sfgate.com/tell-ignitor-gas-furnace-working-23432.html erroneous source] that claims you can not manually light a furnace that uses an electronic ignition system. They are wrong. This proves that the Internet is full of misinformation. This [https://youtu.be/UO73p3GxWlk youtube video] shows me successfully lighting a furnace that has a faulty electronic igniter. * [http://www screenshot of web site with false (or in some cases false which is why they should not state it as an absolute) claim.]* [http://www view this youtube video of me manually lighting this furnace by flame.]There are safety concerns with doing this so do not try it yourself. On this particular furnace design it was simply one step in a multiple step troubleshooting procedure. Other safety components had already been verified and the control board tested.On the hot surface ignition gas furnace check the igniter using an Ohm meter to make sure it has resistance. If no resistance is read (open circuit) then the igniter is broken or cracked and needs to be replaced. Also ensure there is a proper ground to the board so that is not "floating" from one leg to the other. There should be 24 volts on a single leg which is what you need on the electronic ignition gas furnace controls.