Hi

I have a Zanussi ZX97/5SI. The freezer works fine but the fridge is warm. After reading the forums I defrosted thoroughly one month ago and the fault disappeared. It has now returned making me suspect that there is a problem with the defrost system. I have dismantled the unit and tested the defrost heater (200ohms) and the conveyor heater (1200ohms). There are two Tsats which have three connections each, one to the main board and one each to the two heaters. These both have connectivity to the conveyor heater and no connectivity to the defrost heater. Is there any way to test the Tsats or the timer circuit?

Cheers

Joe