"Huge" wrote in message
...
A couple of months ago, the immersion heater overheated and melted both the
insulation
and its plastic cap...

So I assumed the thermostat was faulty, bought and fitted a new one and
fabricated a
new cap from plastic drainpipe.

The new thermostat has an overtemperature trip, which keeps tripping. So,
whatever's
wrong is still wrong. I carefully remade all the joints when I replaced
the thermostat
(I assumed that's what the problem was), so I imagine it can't be that.

Could the element be furred up? We have very hard water and our water
softener packed
up years ago....

--
"The road to Paradise is through Intercourse."
[email me at huge [at] huge [dot] org [dot] uk]



The element could well be furred up, and if it is at the bottom of the
cylinder there could be a few buckets of scale wating to be shifted!! Try
here http://www.ewh.co.uk/