Timeking wrote:
"The RETURN millivolt signal for flame is NOT that strong and will be disrupted by a slight short to ground." Return signal? Are you saying that the Suburban design uses the spark apparatus as double duty for whether or not the flame lit? If true, that seems dumb.
There does not appear to be any damage to the orange wire, looks new. The connection to the lug is shiny and clean.
As suggested, I cleaned the burner tube. The air-gas mixture is fixed, not adjustable.
--- Are you positive the air mixture is not adjustable? On all RV WHs I've seen, there is a mixture adjustment where the burner tube meets the gas valve. You adjust it by loosening a small screw and twisting it on the tube to open or close the slots in it to add or block air.
