This is an odd problem.
As WNY said, make sure you have the convection blower plugged into the right outlet on the Coal-trol. When you're in test mode it will display the output it is turning on at that time so you can match things up.
If it runs in test mode, but not otherwise, it is making me think it is plugged into the wrong output.
If you verify this is not the issue, I'd suggest giving us a call at 315-299-3589 to run through some troubleshooting.