on some cookers there is a contact on the switch behind the knob that brings on the fan and then the thermal switch cuts in later to keep it going
have had them fail
there will be another letter on the end of the model as am getting about 5 cookers from above. if you have commercial code it would help
not got manual on above but at home should have manuals on similar hotpoint branded units. will look later as they are at home
Dave