What I have discovered from this and other forums is that these units do not like being attached to a power source which has a voltage significantly above the amount stipulated in its specifications (for my unit it's 230 Volts). Needless to say, I've trolled the net looking for answers and Miele online support is useless (unless you're ok with shelling out loads of cash to have a technician come by) and I still haven't heard back from them after lodging an enquiry. I have turned in back on after waiting a day or longer (figuring it needed to reset itself?) and the results have been hit and miss and I have had no idea why it would work sometimes and not others. I have the same FE 30 problem on my KM5733 Induction cooktop whenever it's circuit breaker/isolation switch (in my house's fuse box) has been turned off and then on again. This is to demonstrate to Miele customer services what appears to be a serious flaw with their 2010 induction hob control panel. When heating up and the others would also frequently fault. With my Miele induction cooktop ever since I.