Immersion Thermostat Help

[xr4x4]

Could still be stat, breaking down and disconnecting when heated.

If it where me (and I wouldnt recommend it ) I'd temp disconnect the stat and run the element direct, for an hour or so and see what happens.

 

[flameport]

Problem is when we turn it on it still cuts out after a minute or two (we checked this by watching the electric meter).

A far better option would have been for the 'electrician' to use their test equipment to identify the faulty part.

The electrician said the most likely cause of this is to be limescale covering the lower thermostat so it is only heating up the adjacent water and reaching the set temperature quickly.

Not impossible but very unlikely.

If this is the case what options do I have? Is it possible to manually remove the limescale

It could be removed, but as this will involve removing the immersion heater from the cylinder, you might as well just fit a new one.
Unlikely that it would be totally scaled up after just 4 years.

 

[oliverdrums]

Cheers for the replies

We tried a new thermostat and the problem still persisted and it is already a new immersion but it still keeps cutting out.

How do you disconnect the thermostat and still run the element?

If the immersion was covered in limescale would the water around it heat up in 1-2 minutes even if the thermostat temperature was set at 55/60 degrees?