No hot water in shower but plenty everywhere else

bretts

Hi

I am having this problem since we moved into the house, the hot water in the shower dos not seem to work, it was atleast working for a minute or so earlier but now it hardly works for 20 seconds and then turn cold, wait for another 2 or 3 minutes and it will start giving out lukewarm water for another 20 seconds and back to freezing cold water. Is there anything I can do to fix this please.

The washbasin tap a meter away has such hot water that we can not even touch it when it is as its full. Since it is getting colder its getting more and more problematic but if I have to even call someone from outside I dont know if it is the boiler, shower or pipework.

If i can do anything DIY i would give that a try first failing which I have no option but to call a professional.

Any suggestions would be really appreciated.

Thanks

Bretts

phill99

Is the shower electric or does it come directly from a combination boiler. Or do you have an immersion tank with a shower pump?

bretts

It's connected to the boiler

phill99

bretts wrote: »

It's connected to the boiler

Is the boiler a combi.

bretts

Yes it's a combi boiler

phill99

bretts wrote: »

Yes it's a combi boiler

Its likely to be a failure in the mixing valve so probably needs replacing.

bretts

Hi Phill

Thanks a lot for your reply, do you think it's a diy job or should I call professional, I am just a basic diyer.

phill99

bretts wrote: »

Hi Phill

Thanks a lot for your reply, do you think it's a diy job or should I call professional, I am just a basic diyer.

It normally means they need replacing. If you're competemt, then its ok. Otherwise, you may need a plumber.

Cat2011

Wouldn't the mixing valve on the boiler supply all the hot water to the house?

I know very little about hot water - but my shower did exactly that. Cold shower, but hot basin tap. I was totally confused about it, as was my plumber. I happened to de-limescale the shower head and after that the shower was hot again.

scottishblondie

Cat2011 wrote: »

Wouldn't the mixing valve on the boiler supply all the hot water to the house?

I know very little about hot water - but my shower did exactly that. Cold shower, but hot basin tap. I was totally confused about it, as was my plumber. I happened to de-limescale the shower head and after that the shower was hot again.

It would be the mixer valve in the shower that it the problem, not the boiler.

phill99

scottishblondie wrote: »

It would be the mixer valve in the shower that it the problem, not the boiler.

Exactly. Don't touch the boiler.