My Belko GNEV321APX fridge /Freezer keeps triping out the electric within the house, I have managed to stop it tripping the electric now and does come on but does not cool or freeze however the control panel seems to work fine and dispenses water ok I am told i may need to renew the thermostat and from video on utube understand its behind the panel in the freezer compartment but on removing everything there appears to be no way to remove the plastic panel at the rear to expose the thermostat. I wonder if there is a different way of getting to it so i can confirm the location and order the right part