Hi C5Steve
The igniter is wired in series with the burner valve. When the thermostat calls for heat, line voltage is applied to the circuit. As the igniter begins to glow, the current increases. The current flow causes the valve to open when the igniter becomes bright red (almost white). Flat igniters operate from 3.2 to 3.6 amps. In your case the current is less then 3.2 amps and even it does glow it does not open the gas valve.
Gene.
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