biasi losing pressure

[pato1122]

my biasi 24s is losing pressure and somebody has suggested repressurizing the expansion vessel can anybody point me in the right direction on how to do this or should i get a corgi guy in?

cheers

 

[corgiman]

is the pressure rising while the boiler is on in central heating?

 

[pato1122]

yeah it is rising
it goes up aprox 1 bar when heating is on.

 

[corgiman]

what was it on before?

if its not raising higher than that then it aint the pressure vessel but you have a leak of leaks somewhere

 

[pato1122]

i normally keep pressure at 1.5 bar
but it is losing approx 0.5 bar every 24-36hrs
i was initially told it could be prv but that doesn't seem to leak unless the pressure goes up to near 3 bar and then it comes out fairly quick but i guess thats its job at that pressure.
also i checked everything else i can see, ie rad valves and pipework and i cant find anything so i really am stuck now

 

[corgiman]

can you see ALL the pipework?

 

[pato1122]

no unfortunately i cant there is some under the bedroom floor.
i am guessing thats where you think i should be looking?
also i am concerned with the fact i only had new rads fitted 8 weeks ago and pressure was fine before that the problem has only become noticeable in last 3-4 weeks

 

[corgiman]

well the new rads would be a great place to start I would say



Remember it may be a smallish leak or leaks