Hi and welcome to the forum.
I think, this is to much.
After some more experimenting I don't think voltage is the problem.
It does go into overtemperature is mains voltage is over 250 Volts but the error1 happens with lower mains voltage too. And in that case temperature is not to high.
See below screenshot after the error happens.
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It tried to change leading edge to trailing edge but the device seemed to crahs when I did that. Had to take is from power to get it running againa. No even the reset switch on thae back recovered it.