If you could get into the wiring what would you do once you got to it? Not much I suspect...
As for not being able to move the oven from against he wall give some thought to how the oven got to be where it currently is - it was pushed into the gap between the kitchen units for a guess.
As for the clock - did you switch the power off and on again to make the clock flash? Did you depress and hold in buttons 2&3 from the left and at the same time adjust the clock with either the plus or minus button?
If you did do this and it's still stuck on auto then you need to call in a repair engineer.
Good Luck..., February 2017