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.