Hi, I have a Beko CDA539FW-2 Frost Free Fridge Freezer and recently it started freezing everything in the chiller compartment. I spent a whopping amount on an repairman call-out and was told that the PCB needed replaced. Turns out there are 2 boards in the fridge freezer (one connected to the temp control and the other on the back) so I bought both from Espares and fitted them myself.. Unfortunately after starting it up again the temperature is still too low (-5 at the second lowest setting) and the frost has started to build up again. I can't see any problems with the door-seals. Can this be a thermostat problem? If so I can't figure out where the thermostat is (Espares doesn't actually list one for this model). Can anyone help?