High pressure, please help

[scazz33]

Hi guys

I have a central heating system and the gauge in airing cupboard but that keeps going up to over 3 bar to about 3.5, it usually hovers around the one, the boiler is downstairs and the that gauge matches the other gauge in bars 3.5.

In the garden it's dripping down my back wall in the house.
I have bled a rad to bring the pressure down to one but after few hours it's back to over 3 bar again, I also have a 8L red pressure
vessel near a filling loop in the airing cupboard upstairs and I lifted that it's heavy.

Thank you
Hope to hear from you soon

 

[cross thread]

Filling loop passing and expansion vessel needs recharging

 

[scazz33]

What's that.

Here some pics

 

[terryplumb]

Does pressure rise to 3 bar+ only when heating is in use ? If it does the red expansion vessel needs attention ( re charging or possible replacement).
If pressure rises from 1 bar to 3 bar when boiler is not in use the filling loop is either not fully closed,or it's duff.

 

[cross thread]

Filling loop looks slightly on , slot should be inline across the tap

 

[scazz33]

Thanks guys. I'll check the pressure with everything off, there a plug in airing cupboard upstairs that turns it all off clock, pump, valve and guess boiler downstairs I could do that I guess. It's their anything else it could be.

Thanks

 

[scazz33]

With everything switched off from plug it's gone up two gauge bar sectors in 15 mins. Now put water on to try

 

[scazz33]

16.53pm on left and 17.29pm on right

 

[terryplumb]

Filling loop looks slightly on , slot should be inline across the tap

Did you check the above out ?

 

[scazz33]

Yeah it's in the middle, turn it left to fill it and right it's off. This pic below is 17.15pm when I switched water on.

 

[scazz33]

The filler tap, this bit

 

[terryplumb]

Remove the hose from that isolation valve and see if water is still coming out of that valve.

 

[scazz33]

Can u explain please, I'm not no plumber your very experienced or a plumber. I don't want to get a soaking

 

[matlob]

He means that when the slot is vertical (as in your image) it should be stopping any water entering the hose. If you now remove the hose and water is passing through the isolator it will be a faulty isolator

 

[terryplumb]

Grab a towel ,the flexible hose will hold a little water which will spill out. The flexible hose should just unscrew by hand off the isolation valve ,(but you may need a spanner if it's really tight). Matlobs post above explains the reason for taking the Flexi off.