bosch upright fridge/freezer not working?

Recently switched off the power on my upright integrated bosch fridge freezer, to defrost the freezer. When I restored power appliance will no longer work. Compressor will not start and neither fridge or freezer sections operate. The unit is approx 6 yrs old and been looked after. Do not know model number as I cannot find handbook and fridge unit does not have any markings on it. Unit is controlled by an electronic temp control with temp range of 2 to 8 degrees. This unit has two control buttons one to the right hand side, which allows you to select temp on the sliding scale and the second, a orange led button to the left hand side marked with the word "super"!

Any clues I have tried leaving the appliance switched off for a number of hours hoping it would reset but no good. When you switch it back on the compressor tries to kick in but only momentarily then nothing!