DIY Doctor

Main navigation

central heating problem

Postby garry » Tue May 08, 2007 9:36 am

Hi, I have a problem with the overflow on my hot water feed tank the level rises above the ball valve to overflow. I have change the ball valve and noticed the the water in the tank is quite warm.

I now suspect the three way valve is stuck and forcing water back to tank, does anybody have any ideas. The LED on the top of the valve does not indicate anything when water is on, I moved the manual switch on the valve it felt stiff to move then suddenly quite free (a bit too free) i suspect its not doing anything.

I did turn of the water supply on the central heating off to make sure the coil in the tank was not punctured and passing water into the not water, we have not had the heating on for a week or so just hot water.

Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Tue May 08, 2007 9:23 am


Simply Build It

Postby DONFRAMAC » Fri May 11, 2007 1:59 am

Even with the supply to your radiators shut-down, static water in your radiators can corrode the steel, producing hydrogen gas, which can find its way to the return to the boiler, and cause the sort of problem you are experiencing. You should run the heating occasionally, and ensure it is kept properly bled, but there is a strong suggestion that your anti-corrosion chemicals are exhausted, requiring system drainage/flushing/refill + Inhibitor. Priming afterwards can be a pain.
Rank: Ganger
Progress to next rank:
Posts: 195
Joined: Fri Mar 30, 2007 5:52 pm

Postby powerflushman » Sun May 20, 2007 9:15 pm

Hi you didnt say if the water still overflows? and as for the water getting warm it will, some of the heat from the hotwater tank will transfer upto the header tank, hope this helps/ :o
Rank: Apprentice
Progress to next rank:
Posts: 18
Joined: Sun May 20, 2007 8:32 pm

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