I am going to have to assume a propane powered furnace ? Typically if a gas (propane) furnace doesn't fire up, its the igniter. Igniters are not terribly expensive. The one in our house goes south every couple years.
I would look and see if the ignitor is glowing red (heating up). That is how it ignites the flame.
Find the type and model of your furnace and look online for a service manual and/or a how to on youtube.
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psssttt drcook = David R, not Dr. but thanks for the compliment. Most folks just call me Dave.
2004.5 Chevy Duramax crew cab 4x4
2010 Crossroads Cruiser 30QBX
1991 K2500 4x4 being restored
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