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My hydrofurnace 8531-111 will not light off. The fan works fine and it is getting propane to the valve. I turned the power off and back on and still no hot air. Can please explain what is wrong.
Hi Curt, Make sure you have 12V min 10.5 to the furnace so the fan turns fast enough to activate the sail switch, Make sure the plug connections are clean on the circuit board no lint or dirt. Take the board to an RV shop and have it tested. If it's ok, ask them how to test the sail switch. Good luck.
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