Whirlpool frost free fridge

Question

Hi
I have a problem with my fridge . It is a whirlpool 480L model no - WRN43NWB6
It is a frost free multi flow fridge and feezer.
It was working fine untill one day it stoped working . I realised that it triggered the circuit breaker off , so i switched it back on but it does the same thing again. I turned the timer at the back of the fridge untill it clicked and it worked at a ,but very shortly later it does the same thing. what could it be and how do i check it.
Thanks