I've had the same problem with a little chief tripping the GFI. I think the problem is caused by a bad cord....at least it was for me. Mine eventually burned up where the plug goes into the smoker. You might try reseating yours (make sure it is plugged in all the way) and check to be sure it isn't getting hot. It is a potential fire hazard so don't just ignore it and plug it into an extension cord like several have mentioned. I bought a new cord and don't have the problem anymore.