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Is it generating a spark?
First double chek the ground for the control and at the pilot burner. If the pilot burner & electrode is dirty you can clean it with fine sand paper. A bad cable connection is also a possibility. Remove the electrode cable and see if you get a spark to the chasis.
Then it sounds like you need a new control. Do you have 24 vac across the 24v & 24 gnd terminals?
Ok, then you should have a spark. But keep in mind a pilot burner and cable that's not in good shape can also contribute to no spark. If the pilot burner and cable is at all questionable we would replace it first then replace the ignition control if that didn't work.
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