
Gas Burner Assembly
Lower Burner System-Operational Sequence
Gas Burner Assembly
Lower Burner System-Operational Sequence
¾With ignition present on the lower burner, the lower ignition
module must sense that flame is present.
¾This is accomplished through flame rectification.
¾The lower ignition module applies a voltage between the flame
sensor and ground (the burner). With a flame present between
the flame sensor and ground, the flame completes the circuit’s
path. Rectification occurs through the flame and a small DC
current can be sensed.
¾This measurement can be taken from the lower ignition module
and anything above 0.7 μA proves that flame is present.
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