Overflow problem - Water pouring out

[jackpot]

I have water pouring out of my overflow at the back of the house. Only occurred today so not sure if it has anything to do with the snow we have had here but i doubt it. I have a combi boiler fitted and when the heating is turned on the water out of the overflow turns hot, so its definately something to do with the internal water system. Recently had a plumber to remove a radiator so i can tile ready to fit a new radiator. Other than that everything is as it should be.....so whats causing this and how do i fix it?????

Thanks in advance

 

[Trance Nation]

Stuffed prv ?

Check FAQ for more details

 

[jackpot]

Thanks

Had a look so what is the best thing to do??

Open the valve and try and close again which i doubt will do anything or just replace it?

How easy is this to replace or is there more to it that i will need a plumber?

 

[JPC]

whats the boiler pressure reading ?

 

[jackpot]

I turned hot water/cenral heating tap off at the boiler and the pressure went down. When turned back on it went to about 1.5 as it was before the problem.

 

[kevplumb]

EV is stuffed

 

[jackpot]

Can you tell me what EV is please...Something valve??

Take it i need a plumber? Can i do anything in the mean time to temporary stop the water pouring out.
Also is it dangerous?

Sorry not clued up on stuff like this.
Thanks

 

[kevplumb]

EV expansion vessel

PRV pressure release / relief valve
it is probabaly stuffed as well