water in the element possibly
disconnect from the supply,remove the back kidney shaped panel to expose the element.is it wet?.if so dry with a hair dryer and retry.if after using it for a while it works but then trips it could be because the water isn't being pumped in to the water bottle.check pump works or for blockages.if you have moved it recently then this can cause water to go in to the element causing the problem you have in which case dry it out with a hair dryer and retest
ck
October 2011