Forum Discussion
Old-Biscuit
Apr 30, 2019Explorer III
Flame Proving is failing..
When flame lites it generates a milliamp signal that circuit board MUST sense or DC gets dropped off gas valve so no raw fuel accumulates
Flame Proving signal return path is via spark electrode
soot/carbon on electrode, loose/bad wire/connection electrode to circuit board, cracked ceramic insulator, bad ground (electrode mounting screw provides ground)
All about flame proving/spark electode
When flame lites it generates a milliamp signal that circuit board MUST sense or DC gets dropped off gas valve so no raw fuel accumulates
Flame Proving signal return path is via spark electrode
soot/carbon on electrode, loose/bad wire/connection electrode to circuit board, cracked ceramic insulator, bad ground (electrode mounting screw provides ground)
All about flame proving/spark electode
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