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gene, RV Mechanic
Category: RV
Satisfied Customers: 1100
Experience:  28 yrs exp in the industry
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My atwood hydro flame series 8500-IV furnace ignites

Resolved Question:

My atwood hydro flame series 8500-IV furnace ignites and then shuts down....possible fix?
Submitted: 7 years ago.
Category: RV
Expert:  gene replied 7 years ago.
On the hydro flame heaters the thing that will cause this is the high temp limit switch or the sail switch,the sail switch is easy to check with a test light,you should have power in and out with the blower on.If you have no power to the sail switch then the high limit switch is stuck open and needs to be replaced.Here is a manual on the unit that explains everything and how to test it,most common part to fail is the high limit switch.Let me know.
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