Baxi Combi Instant 105e won't hold pressure

[Lew21]

My 4 year old Baxi 105e wont hold CH pressure, topped up to 2Bar, eventually drops off after several hours. No apparent leaks on radiators but constant drip on overflow - anyone know what the fault is please

 

[gas4you]

Should only be topped up to just over 1 Bar cold.

If dripping when below 3 bar then sounds like PRV has given up the ghost.

 

[bengasman]

if your prv is gone, chances are you also got a problem with the pressure vessel

 

[Lew21]

Just spoke to a mate who's a plumber, he reckons it's the pressure vessel, can't find it on the parts list or on a couple of baxi boiler spare part suppliers, hopefully someone will have them, no idea how much it will cost though?

 

[swbjackson]

Before you change it get your mate to re pressurise it.

 

[Lew21]

Cheers, he's hopefully coming to look at it tomorrow, I'll post an update then.
Thanks for the info