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Atwood furnace
The furnace will work for about 24 hours each time I replace the circuit board even though I don't see the red light come on the board. After that the fan will come on but burner won't relight. It sounds like it's relighting but then stops each time after about 3-5 seconds and 3 attempts. Also, now the outside switch on the furnace won't shut off the unit, I have to control everything from the thermostat.
I have checked everything mentioned in the previous suggestions at one time or another (no mud daubers, cleaned ends of gas tubes, had a new gas valve installed, sail switch cleaned). During the unsuccessful relight attempts, I have smelled propane from the exhaust area.
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Thor Forums
