Check your units start up procedure as far as the initial temp setting. My GMG goes through the start up process and then sets the temp at 320. If I stand by the several minute procedure I can set the temp anywhere I want after start up is done, and at that point it's only at about 125. If I set it to 180 it will go to about 200-210 and then back down, about 5 minutes to do that. Pellets brands can also cause different temps.
Blues, BBQ and Homebrew!