On 17/12/2017 14:48, Andy Burns wrote:
ARW wrote:

Screams to me knackered element.

I suppose an oven tripping normally would scream "element" to me,
especially using one that hasn't been used for some time.

But what tempts me to think otherwise is that with the control knob in
the "light" position it still trips; so it trips regardless of whether
no element, fan element, top element, bottom element, top and bottom
elements are selected ...

If the element has a neutral to earth short, it can trip the RCD
regardless of whether its being used or not.

The stat has to be switching something.

Do they tend to have an actual stat, or a thermocouple that operates a
relay? You can certainly hear something click at the set point.

It will have an actual stat of some form...

Double pole switching? then I suppose a fault from the neutral "end" of
end element to earth would do it, even for an element that wasn't in use.

Indeed.

Can you isolate the cooker and do a neutral to earth resistance check?


--
Cheers,

John.

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