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dad4papa2's avatar
dad4papa2
Explorer
Oct 24, 2020

Atwood Furnace issue-need suggestions Please.

1996 Damon Intruder has an 8535-lll Atwood Furnace in it. It has always worked perfect but went out the other day and turned it on.

Furnace fired right up as always and fan run for a bit and then ignited. Then after running for about 3-4 minutes it went out. Fan continued to run and after a few seconds ingnited again. Now it runs for about 30 seconds and shut back down.

So where do I start? I have read about the sail switch. Will it do this??

Limit Switch??

Where do I start??

Thanks in advance. Dad
  • Thanks guys i will look at both suggestions. Hope to get it going!!
    Dead
  • 3_tons's avatar
    3_tons
    Explorer III
    There is a two prong ignition prover in the exhaust port...Try removing it and re-gap it to about 1/4” gap...
  • Locate the circuit board, disconnect and clean multi-wire connector.
    Possible flame sensor is not in flame or bad circuit board.
    Compare circuit board in water heater with furnace. If same swap them to see if it works.

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