Sad News. After several weeks of successful cooking on my EX4, this past weekend I suffered an E3 error, Grill Flame Out. I followed the solution provided by the manual and started it up. Nothing. The motor and fan worked for about 3 minutes, the Glow Plug ignited for that time and then the motor stopped and the Glow Plug went out. The fan kept working at reduced rate. I left it on for 15 minuted with no change. Unplugged the EX4, cleaned out the pellets and reset the controller to factory settings, upgraded the software with the App and tried again. Exact same thing. Started up for a few minutes and then it stopped working as before. I have sent an email to Weber support, but no response yet. Any ideas?