I just had a new issue that I’ve not seen before. The A-01 error appeared when I started roasting. I noticed my fan speed was zero so I increased it. It turned on, then the same thing happened, error and it stopped. I could visually see it not moving, then respond when I gave it a speed, then stop again. I ended the roast and dumped the beans and the fan spun up again and lasted for the entire cooling cycle. Any ideas?