Quadrafire 1200 convection won't turn on, only 5v at snap disk 1

[chefweil]

Hello,
The convection an on my 1200 won't turn on, the snap disk is good (continuity test when hot) and I am only reading 5v on the purple feed line.

I have a couple questions:
It seems like my board is bad, does anyone have any insight into repairing it, or do I need to get a new one?
There are three wires coming from the convection fan (red, white and black), I realize this is a dumb question, but given that white is the neutral, can someone teach me about the other two? I assumed it would be a hot, neutral and ground, but the colors seem wrong.

Thank you!

 

[ARC]

Red is Neutral(i know does't sound right, lol) white and black are your high and low hot that control fan speed coming off the fan speed switch going to blower. Purple is hot goes to snap disk one then to high low fan speed switch.

 

[Ssyko]

the switch position and wire colors are different circuits in the control box that control voltage for the blower motor and auger timing