Hi all - a few weeks ago, my machine started tripping the GFCI outlet. I plugged into another GFCI outlet and it was working fine until now. When the machine is turned on, the boiler heats to the steam temperature, even though the steam button is not selected. When I hit the brew coffee button (without the portafilter attached), I get a huge burst of steam. The pump eventually fills the boiler with new water and the steaming subsides. Any advice as to what I should test or replace? Was thinking either a bad steam switch or broken temperature sensor. Thanks!
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