The 'S01' error code is simply a safety shut off message, it means that the oven has been on for a long time and the automatic shut off has been triggered.
If this was unexpected and you want to carry on cooking, just turn the oven off and on. This resets the safety shut off timer.
Hopefully that's fixed if, but if you need any extra help, you can get in touch with a Team Knowhow Expert here.
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