I had a similar problem. Power went off, and no instructions on how to rest the clock as the ovens wouldn't work.
The 2 buttons to press I found were the top and main ovens together to get the the hour, then the minutes.
Thanks for the assistance in the first instance though.
Malcolm Cowley
June 2016
press 2 buttons together whilst using the +/- buttons to set time
CK
December 2013
I can answer this question...
How to reset my creda concept solar plusafter power is restored?