the thermostat that came with the unit or another one?
Eric
With out seening the PCB I image the out put to the ignitor goes either threw a relay or triac. Those 2 items either work or don't work. I would check the connections, clean them real good small wire brush and a solvent. If there are clean and your getting 117VAC or around there then I would try a new ignitor not the PCB. This is my experiences working in electronic and not pellet stoves.
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