Hello I'm new to posting, but can't seem to figure out what my next steps in troubleshooting my pellet stove are. I've got a St Croix Prescott EXL model that must be old as it's got the dial knobs for 1-6 auger settings. It is heating a greenhouse and has worked great for a couple years, but this spring after all cleaned out only ran for a couple nights then had trouble having the auger some on automatically. I can manually feed and for a couple of nights I did that for about 15 minutes until the auto feeding came on, ran fine all night. However, now I can't get the auger to auto feed even if I prop the manual feed button on for a couple hours, also the fan knob doesn't work. I can't seem to find any manual reset for a high limit switch, I jumped the vacuum lines to bypass which also didn't help. Thinking that the control board is faulty but have heard of timer block problems also and not sure if this model has it. Also having trouble finding any schematics or control boards that seem to match this older model. Any help is much appreciated as all the service people in my area don't work on St Croix. Thanks