first thing you must do is inspect the door seal.look for any splits and anything that could be hindering total door closure .look closely to the doorseal edges for signs of the seal coming away from the door.any of the above signs, you will have to replace the seal.if all looks ok you will have to replace the thermostat ,that's the temperature control you can manualy adjust inside the fridge compartment .lets hope its the thermostat that's at fault its a hell of a lot cheaper than the doorseal and easily replaced,.you can source the replacement parts from www.espares.co.uk
mech monster, November 2011