Could use some advice on troubleshooting Heatilator Eco Choice Cab50. The exhaust blower won't shut off, and the igniter doesn't heat up. I have been able to get it running by lighting pellets and when thermocouple heats up, unplugging and plugging cord back in to reset. It will run without problem at this point. I have gone one by one jumping out snap discs. The manual say's replace the control panel. Any other suggestions before spending $250 for the panel.