Atwood Furnace Wont Light
I was checking out a friends furnace today, its an atwood, sorry don't know model no., in a 2007 coachmen Wyoming 36 ft 5er. I took the outside cover off,and the furnace cycled but went into fault aft...
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Yes the high tension wire is the Red one from circuit board to spark electrode.
After the fan comes on a timing circuit is activated for purge cycle.....then power goes to spark electrode and gas valve at same time. The 'clicking' you heard is the spark (electrode tip to ground rod) and smelling ga means gas valve has opened.
IF main flame lit you would hear it.....just clicking means that main flame is not lighting off. Could be obstruction in main burner (dirt/rust), could be spark electrode dirty, could be cracked ceramic.
Here is a Atwood Manual that covers the three series (79,85,89) of furnaces.......LINK
After the fan comes on a timing circuit is activated for purge cycle.....then power goes to spark electrode and gas valve at same time. The 'clicking' you heard is the spark (electrode tip to ground rod) and smelling ga means gas valve has opened.
IF main flame lit you would hear it.....just clicking means that main flame is not lighting off. Could be obstruction in main burner (dirt/rust), could be spark electrode dirty, could be cracked ceramic.
Here is a Atwood Manual that covers the three series (79,85,89) of furnaces.......LINK
