Thanks a lot Astracat(s)
'Element limiter control panel' seems vather vague, as this panel seems to deal with ancillary stuff, nothing whatever to do with any elements, but oven cooling, lighting and two more things that I haven't yet discovered - well there are four high impedance inputs, will check out by shorting out those three Triacs to see what turns on.
Salads for a while, but it's high summer.
Many thanks for your links, checked both exhaustively, and was impressed - Chris.