my all in one controller board came with an inverter 2000 **** watt I noticed the cooling fans are not turning on it has not burned up yet but I would like to fix it before it does the last time I had a question they never got back to me. I contacted coleman about my 440 havd they were awesome handled it right over the phone great piece of equipment . I just e mailed Missouri wind today so we will see nothing bad to say about them so far we will see !!! by the way there videos are pretty informative tks Dave