Immersion water heater tripping electric

[luke2020]

Hello.

I live in a flat and I have an immersion water heater. Lately at night, my electricity has been tripping. I have narrowed it down to the water heater, as I switched it off from the RCD and the electricity didn’t trip. But when I have it on a manual boost, it works fine and the electricity does not trip. Could this be a fault timer? Thanks for any help

 

[Murdochcat]

Does your tank have 1 heating element or 2.

If it’s 2 then the RCD tripping is almost certainly due to the over night element becoming faulty.

Highly unlikely to be the timer

 

[luke2020]

Thanks for your prompt response. I think it has two. I’m out at the moment but I can post a picture of it tomorrow.

 

[Murdochcat]

Thanks for your prompt response. I think it has two. I’m out at the moment but I can post a picture of it tomorrow.

Pictures are really useful and remove the need for people to speculate

Looking forward to seeing them

 

[ericmark]

I note also on screwfix forum, as I have said needs a meter, I note the pressure test well out of date, I hate sealed systems because of the annual test, so may be you can kill two birds with one stone?

 

[luke2020]

Pictures are really useful and remove the need for people to speculate

Looking forward to seeing them

 

[ericmark]

If it’s 2 then the RCD tripping is almost certainly due to the over night element becoming faulty.

There is your answer, I would say get a plumber to change it, as it is a pressure vessel and needs testing.

 

[luke2020]

There is your answer, I would say get a plumber to change it, as it is a pressure vessel and needs testing.

Thank you for letting me know. Which of the two do think it may be?? And are they the same

 

[ericmark]

As said on the Screwfix forum, most likely the bottom one, but you need a plumber to do the pressure test, so he will likely confirm before he changes it.