Thermostat Keeps Tripping

[milly143]

The thermostat in the immersion tank (our only source of hot water) keeps tripping out. We've had a new tank fitted (it used to do it in the old one too) and I've changed the thermostat previously so I don't understand what it could be. I've tried turning the temp down so it's now set to about 55 degrees. Any ideas?

[TonyV]

What's tripping out? At your consumer unit or somewhere else?

[milly143]

What's a consumer unit? I have to keep pushing the reset button on the actual thermostat that goes into the tank.

[deggers316]

did you wire the thermostat correctly
try another new one there not expensive

[milly143]

I didn't do this one, the plumber wired this one when he fitted the new tank.

[milly143]

I should say it was doing it when he first fitted the new tank so I turned the temp down as he advised. It had been fine for a couple of months but has now done it 3 times in as many days.

[redman41]

It could be a Faulty Thermostat milly ! Turn it down to 50 and if the water is still piping hot and it does not trip again it's problem solved. If not Thermostat may need replacing.

[TonyV]

you still getting hot water when you reset the thermostat which means you got a faulty thermostat or dodgy wiring between thermostat and heater. Get an electrian to come and check it out

FYI this is what consumer unit looks like - just an example

http://www.screwfix.c...al-RCD-Consumer-Unit#

[Whickerman]

do you have oil/gas heating? That happens here if the immersion is on and set at a lower temp than the heating; the thermostat thinks it's overheating and trips out for safety.

[TonyV]

Whicker - Milly typed "(our only source of hot water)" so did'nt think there was a supplementary heating source

[AlBags]

There are two parts to the immersion heater .. The heater .. and the Stat.
There will be a fault in one of them.

[AlBags]

http://handkplumbing....sions-stats-c-52.html

Stat fits inside the immersion. It is isolated electrically .. or should be.
It probably isn't any more!

[milly143]

Thanks for all the answers. No, we don't have gas/oil, just electric. I will try and get new an electrician to fit a new thermostat - will be the 3rd or 4th new one in just over a year (although the first replacement in the new tank).