Mistral Plus Thermistor?

Hi all, I wonder if yuo c an help me, i have a Mistral Plus Fridge Freezer, with a error code of E8. Ive found out that its is probably the Evaporator Thermistor, I can get a new one, no problem so far, but for the life of me I cant find it on the freezer. Does anyone know where it is... Thanks ..John