Hi we have a vogelzang 5790 and it’s running very poorly and creating a lot of black soot. We have been having issues with for about 2 months now. This is a big stove and we should be able to run it for days but we can’t. We are currently getting and E2 vacuum error after the stove kicks on and is running (both combustion and room air fans) and the stove shuts down. I cleaned the exhaust last week and not sure what 1. Is causing it to burn THIS badly 2. what is causing the E2 error. I tested the vacuum hose and it’s not blocked and I hear the click from the pressure switch. US Stove has pretty bad customer service so I figured I’d ask here too.