Are you using a chimney or power vent?
I know its a stupid question but is everything plugged in correctly, burner plugged into where the burner goes fan plugged into fan ect?
I would try to isolate the problem first -burner or control... How does the fire look? 2"s of burnt coal at the end, fire a couple inches from the back wall? Stack temps? draft?
If everything is plugged in rite, your coaltrol is set to min- 4 max- 26 cft- 8 (them are the settings I start with when using a PV), set your time and set all 3 temps to say 65 (n, d, and current) if it still is "running away" I would have to say your coal-trol is faulty.... I have installed a few juans and pretty basic stuff, never (knock on wood) any issues, its a decent unit if you are heating the space the stove is installed in...