K1C shutting off mid print

My K1C (Februari 2025) keeps switching off mid-print, somewhere between half a,n hour and an hour in, without any alerts or alarms. It's only able to be powered on again after a cool-down period.

I've done some testing:

- If I (only) heat up the hotbed (95°C), it will not switch off.

- If I (only) heat the nozzle (230°C), it will not switch off

- If I heat both the hotbed (95°C) and the nozzle (230°C), it will not switch off

- But, if I start a print (I tried it with different models) under those conditions, at some point the machine will completely shut off.

Does anybody have any idea what else I could check?