In message .com,
Aidan writes


On Dec 30, 2:38 pm, Stuart wrote:

It's very likely the element has corroded through. You can but try,
though.And the thermostat might not have a safety cutout as all
present day ones have .

Worth buying a new thermostat, if the heater element works.
I believe that the mineral insulation inside the element sheath can
absorb moisture, causing a leak to earth and making any RCDs trip. Once
thgey heat up, the absorbed moisture evaporates.

What is the operation of the safety element? Overcurrent, overtemp. ?.

I fitted a new one to my daughters cistern and it has tripped twice
since. The element looked perfect; no scale or distortion. I was unable
to check for electrical faults.

Is there any possibility of a faulty cut-out?

regards


--
Tim Lamb