Right, odd one this!

Its a worcester combi-boiler.

The little gauge that tells you the pressure of the rads keeps going up past 4bar (should normally be 1-2bar) so you have to drain about a litre out the rads. This happens over about 3-4 days. Its only been doing it the past week or 2.

The pipe to connect the boiler to the water supply is disconnected all the time so cant be going in there!

Any plumbers on here!!??

 

Sounds like its the hot water heat exchanger passing between the mains water & primary water so chances are you need a new heat exchanger. Which worcester combi is it?

 

Well if there is no water going into the system............there is 2 outcomes.

1-The gauge is fucked

Or

2-The water is finding its way into the heating system via the hot water side....which i am not 100% sure it can as they are 2 seperate systems.

I would test the gauge first......or even fit a auxillery one on the flow pipe. That way you will see the pressure iin the heating system.

If you dont release the pressure, does it fire the Blow off valve and empty itself???

 

Could possible need the expansion vessel re-charging as this can sometimes make the pressure creep up.........

The red expansion vessel has a valve on it that you connect a foot pump/bike pump to. Make sure it is reading 1.5 bar.........if it isnt, pump it up to this pressure. That may fix the issue

 

Not 100% sure, quite a big one tho (12 rads i think)

Will get model number tmrw

 

Thats for help, i've read that 3 times and my tiny mind cant make sense of it lol

 

is the filling loop disconected or jsut in the isolate posistion ?

if its completely disconnected it`s the heat exchanger, if its in the isolate pos it could be by passing

 

Completly removed mate

 

I will try and make it easier for you Neil.......lol

If you turn the boiler off, then remove the front cover.....usually a few screws.........

You will see a red vessel at the back i think it is......this is the expension vessel.

On it will be like a tyre valve that you use to blow the tyre up with. Stick a pump or gauge on it and see what it is reading. It should be 1.5bar........

If it isnt, pump it up to that

 

LOL, thats better mate, remember i'm thick!

I'm not taking the covers off mate, i will almost certainly kill myself!

 

Neil.....if you turn the fuse spur off to it you will be fine.........

 

Its on a plug mate so all good

I havnt got owt to check pressure anyway, best ring a plumber tmrw..... more money down the drain!

 

well if it`s removed , i would say its your HX (heat exchanger ) at fault , an hours labour + part

 

AS above mate.
will be your plate heat exchanged pinholed internally. could only be a vessel fault if you have been running your heating but i doubt it at the moment.
this is becoming quite common at the moment due to sludge build up in the system. a good product to add while your changing it is a magnaclean. They are brilliant and will help stop it happenning again.

hope this helps

 

Not a plumber are you? i'm only in Derby!

 

try ringing their technical helpline bud 08705266241

its 24hr

always been helpfull to me

 

give exitpoint a Pm..but best if you call him heres his contact page.

http://www.plumbromany.co.uk/

hes in nottingham, and use me as a referance. Simon colton.

hes a real good mate. so will make sure you are sorted.

 

I always fit these now.....superb product

 

yea i am mate. i work for british gas on the breakdown side.
if you struggle to get some1 then let me know.

 

Cheers all!

Got worcester coming on Monday, one off payment off Ł210 and will fix any problem (they say!)

 

Have you got very high mains water pressure?

 

Dont think so, just normal i think

 

More than likely the little pipe feeding the expansion vessel is blocked or as said above the vessel has lost its charge, So just needs draining down and expansion vessel pipe removing and cleaning and vessel pressure checking But deffo get an engineer to do it thx Jon

 

Funnily enough Neil....i had a call out yesterday for the exact same thing as yours......And like i said in my earlier post, It was the expension vessel needed recharging....

I charged them Ł50..............

 

Come as far as Derby for work mate?

 

lol...........if i was closer i would mate.......