Could be a problem with the reignitor module.
Reignitor Module # 7970-378P/B can be seen and ordered if
needed through Paypal from right side of page here :
Due to cost, would be best to call an hvac tech to diagnose correctly.
Be sure module switch is on.
Be sure you have 24vac to module.
Check for loose wiring connections and shorts to ground.
Be very careful, HIGH voltage at module with power on during sparking.
Spark gap should be 1/8" to 3/16"
Take care and best wishes,
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