DIY Doctor

Problem with Hot Water

Postby Arron » Mon Jan 12, 2009 12:41 pm

I have a problem with my combi boiler shutting down when hot water is called for but only on the thermostatic shower mixer and on the standard mixer kitchen sink tap. The heating works fine, and if I open the bath hot tap and the basin hot tap all is okay except sometimes the water can get too hot. When I turn on the hot tap at the sink the boiler comes on starts to make a kettling noise and then shuts off and after say 5 seconds it will fire up again. It is the same with the shower mixer, hot/cold then hot/cold etc... The boiler is new and I had similar problems with my old combi. Can someone please help me on this ?
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Tue Oct 07, 2008 9:56 pm


Simply Build It

Postby swidders » Mon Jan 12, 2009 6:46 pm

Since the boiler is new, then it should come under an extended warranty (of 3 years) if installed and certified by a corgi fitter. Phone up the manufacturer, explain the situation and take it from there.
Rank: Ganger
Progress to next rank:
Posts: 90
Joined: Sat Jan 10, 2009 11:32 pm

Postby mattpark » Fri Jan 16, 2009 10:52 pm

You say the problem is identical to your old boiler problem. So is the boiler really the problem or could it be something else.
As it's a new boiler its worth checking the operation requirements with regards to minimum water flow pressure - should state in manufarturers specifications. Many of these require a minimum bar of pressure in order to operate.
Rank: Apprentice
Progress to next rank:
Posts: 13
Joined: Thu Jan 15, 2009 10:05 pm

Postby TheDoctor5 » Thu Jan 29, 2009 1:43 pm

If you type the key words of your question into our search box to the left of the site you may find the answer is already posted or is in the DIY projects section of the website. Every post goes through a monitoring process and using the search box may speed up your answer.
Posts: 1382
Joined: Tue Jan 20, 2009 9:17 am

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics