central heatind header tank fills up constantly

Richard1964 · 4 Jun 2008

Why does this happen the ball cock is not leaking, it is definatley filling up from the feed to the CH system, I have seen something that the heating coil has gone. Is this correct

The hot water system is pressurised the CH is open vented.

Do I have to replce the cylinder?

gasandoilman · 4 Jun 2008

YES

seco services · 4 Jun 2008

isolate the cold water feeding the cylinder does it stop ?

Richard1964 · 4 Jun 2008

seco services said:
isolate the cold water feeding the cylinder does it stop ?

Can't locate the valve, the tank overflows without any hot water or central heating being active. if the water was coming from the pressurised cylinder i would have thought it would have been hot, it doesn't appear so.

seco services · 4 Jun 2008

shut your mains stopcock then.

Richard1964 · 8 Jun 2008

seco services said:
shut your mains stopcock then.

This will not help identify if it is the coil that's gone, after lookig into this I now have s plumber coming tomorrow, to llo into this.

thanal all for the advice

seco services · 8 Jun 2008

Richard1964 said:
seco services said:

shut your mains stopcock then.

Click to expand...

This will not help identify if it is the coil that's gone, after lookig into this I now have s plumber coming tomorrow, to llo into this.

thanal all for the advice

won't it ?
if there is no pressure on the hot water from the mains it won't fill the f/e tank.
if the coil has gone.

or you have a blockage in your vent pipe or heating pipework.

but you are a plumber and know best.

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central heatind header tank fills up constantly

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