🙁 problem with santo fridge freezer, type ks20043 pnc number 924519321 display for fridge section is showing a square in the read out the freezer section is down to temperature but the fridge section is freezing evey thing. now iam thinking thermistor fault in the fridge section and the system has gone into over ride and runs to stop loosing stock from fridge??? if its the thermistor do you have a part number and where to purchase one. a wiring diagram for future call outs would be excellent too many thanks jay.