With me and in the close relationship of these three pieces of stove were purchased about two years ago. Last year, fell from the first to the beginning of this year, the second and last week of the third kettle from. All for the same reason - fatigue failure of the lever of Deckelentrieglung, right on the button. The lever is dimensioned such that it must simply cancel out the key after a while. A repair is not feasible because of the construction. I do not think otherwise of planned obsolescence, but here it seems to be fact.
Given the low durability of the stove falls a further disadvantage not great consequence. Built in the base electronics namely whistles loudly and unpleasantly, as long as the temperature display and the stove is on standby. Remedy: Switch on long press on the ON button the boiler completely. Then turn off the display and the whistle's gone. For next cooking course must only times awakened over longer pressing the ON button on the stove again, only to be started only.