Old-Biscuit wrote:
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.
Not only does Suburban but also Atwood/Dometic, Norcold for water heaters, fridges, furnaces etc
And it is VERY Smart technology
When the Flame ignites ti creates a current (Flame Rectification)
Flame generated AC Current is rectified into a DC Current which the circuit board senses via the milliamp signal thru the Spark Electrode.
All this takes place w/o further devices/equipment/sensors and happens within seconds of gas valve opening/spark electrode firing
No flame proving signal....circuit board shuts down DC to gas valve---hence no excess raw fuel
My understanding is that the flame conducts electricity between the flame sensor and burner. In doing so the current is changed from AC to modified DC, hence the term rectification. However, since the supplied electricity to the heater in an RV is already DC, how can there be rectification?
