SMEG Electric Oven (2) with six gas rings

Couldn’t you phone Smeg customer service and ask them?

No clue what you mean by locked, if you haven't got the instruction manual look for it on line.

I think they have a child lock function ,

Not sure if this link will work but I’ll try anyway

www.hunker.com/12499579/how-to-troubleshoot-smeg-ovens

Scroll down to Step 2

Good luck

On washing machines, when child locked, to unlock, hold button down for a “Long” 5 seconds. Same may work for oven.

Tabitha, thank you for your link, we will be trying that out.

We have no messages or codes nothing - other than the red lock light. We of course, went to the manual initially, then interrogated the internet, have contacted SMEG (waiting for a reply). Have had the cooker two and half years, and this is the first glitch. Fortunately there are two ovens and only the large one has locked.

Once again, thank all of you for your input.

When my induction hob locks ( set off my my zealous cleaning) I turn it off at the socket switch and then on again. It reverts back to the pre set settings. Might work for you.

Thanks J52, I tried that, and left if off all night. I have now put in a call to SMEG for help, it is under guarantee but I did not want to call anyone if I could resolve it myself.