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sounds like to me the mother board is fried , i see this a lot, then you go and replace the control module but it doesn't fix the problem because the hole thing got fried, this can happen due to product failure or a power outage and power surge.
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The ignition module is likely bad. check voltage to that during the ignition phase and tell me what reading you get...we can go from there. Phil
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Here is the link. Also, before you replace the module, unplug the PV and MV (blue and red) and see if it sparks. also, Double check you ground wire. That could also be a reason for the box not responding. If none of that works and you get a new box, try it without the gas valve plugged in. Fortunately in this case your model is probably one of the simplest Power vents (wire and control wise) they made. new ones have become extremely complicated. Here's the link:
My reason for trying it without the gas valve plugged in is just incase the valve is shorting internally.
ohh, and here:
Thats pretty much all of the 8600 series ignition controls. Last thing, if your module has ground and 24 volt ground, connect them both. See page 5.