Sometime ago our oven thermostat gave up the ghost. So a fun Friday morning
(it really was) was spent replacing it.

SWMBO was very happy as now the bread came out brown instead of black etc.
But recently the darned thing has started staying on, at very low temp, even
if turned "off".

Any suggestions as to what this might be? I don't remember any trimming
capabilities when I installed it and yes, it is clearly on. Occasionally
the "I'm heating" light comes on and you can feel the slight heat in the
oven when you open the door.

Thanks for any suggestions.
Paul DS.