Dometic RM 2652 with dino micro P-711

Where did the soot/carbon come from? The flame should burn clean. If it does. there shouldn't be any build-up. Soot can quickly clog the flue and then the flame will roll out causing trouble. Be sure your is burning clean and blue with no yellow tips (which indicate not all the gas is burning and builds up soot).

Though FWIW, the P711 uses a thermocouple for flame proving, and not flame rectification.

Tile man wrote:
Thank you. It was soot/carbon on electrode.

Glad it was an easy fix!

THANKS for posting update........much appreciated to hear what was found and how it was resolved

Thank you. It was soot/carbon on electrode.

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