Potterton Puma 80e Pressure drop

[murphy4869]

My PUMA 80E combi seems to be losing pressure (about 1 bar per 24hr). I have had a good look around boiler no obvious leaks but it needs topping up from the filling loop once a day to mantain the pressure. Any ideas what might be causing this?

All I can see might be a problem is the isolating valve on the filling loop under boiler, where the thumb valve attaches there is a slight and I mean very slight drip of water when the thumb valve is turned, I am going to replace this valve at weekend but would this be the cause of such dramatic pressure lose?
Thanks

Untitled

• murphy4869
• 7 Oct 2010
• 1

Untitled

• murphy4869
• 7 Oct 2010
• 1

 

[markymark1234567]

Could be the PRV which is leaking or the pressure vessel knackered which is causing the PRV to release water.
You will have a copper pipe on the outside wall, take a look and see if it losing any water.