Peter wrote:




Another thought, assuming they are the same part maybe I could swap over
the
thermostats between the two ovens, if the fault moves to the big oven then
its the thermostat at fault, and if the fault stays in the little oven
then
its the element?

Jc.

Wot are you goin on about one of the elements has gone simply replace it

Very likely.
It's also possible that the fault is in the controller, though less likely.