That's not necessarily true - with the rather bizarre (and very unconventional) wiring arrangement I mentioned (with the 'isolator' actually being a bypass switch in parallel with the timer), the timer would have worked, so long as the 'isolator' was in the 'off' position. Mind you, wiring an immersion timer with just three conductors is also pretty unconventional, so I guess anything is possible.
On that we can agree.
I think it's quite likely that the timer never worked, because it has not (yet) been connected to anything, but an electrician will be able to sort that out for you.
Ah, so if the contactor had stuck closed, that would explain why the heater is only switchable from the isolator switch.
Theoretically possible, although I don't know of any timeswitches of that sort, available in the UK, which wasn't designed to switch 3kW directly.
But John, the OP is in Cyprus!
Indeed it could (provided the isolator was downstream of the contactor). However, I do very much doubt that such an arrangement would have been installed in a (by implication) recent new-build in the UK - but I guess anything is possible.
Damn it - why do I never look at that side of the screen?
In relation to what I've just written, that might explain the wiring colours (and practices) as well - apologies for any confusion!Not necessarily.
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