I have a Breckwell Big E. The stove will run all day on heat setting 2 with no issues whatsoever. If I bump the heat setting up to number three it will run for about 30 minutes to an hour then shut off and give the blinking error 2 light. I’ve ran through all diagnostic according to the manual, the stove is cleaned thoroughly. No air leaks detected. I’ve checked the air switch and tube. I’m not sure what to do. Has anyone seen this issue?