2019 Seneca 37HJ Atwood Furnace Won’t Work
DW turned thermostat up but furnace did not come on. Called Atwood they thought “sail” switch might have gone bad. Replaced sail switch. Still didn’t work. Called repairman. Discovered 2 blue wires running to the “limit” switch were in contact with “hot” exhaust tube. Burnt through insulation & shorted out the board. $400. later it was fixed. Suggestion: Remove 4 small screws around square “HOT” plate. Pull it out and make sure the blue wires aren’t contacting the hot tube!
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