Furnace doesn't always light
Is there a good thread for troubleshooting furnace problems? Mine is not quite 3 years old and has worked fine until this week. Sometimes when the thermostat calls for heat the fan comes on but the...
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One thing I did not see mentioned.. If the fan starts and the propane valve opens (Indicating Thermostat and Sail switch are good) the ignition points are often a bit wider than spec,, I think on my RV they were 2x the specified spacing per the onwer's manual.. On the oil fired furnace in my parent's sticks and bricks 4x.. Re-setting the gap made a big difference.
