If you want to use your pellet grill frequently, you have to ensure that you clean out the ash pan regularly. You cannot start a new round of cooking with debris from the last session still inside the grill. You should clean out the ash pan after every session. Open the ash pan door and gently pull out the pan. Make sure that you close the door. Take the ash pan to your garbage bin and empty it out. You should also make sure that you clear any ash which fell down from the grate. Put the ash pan below the ash door and then use a rake to clean it properly.