Potterton Suprima 60L Sealed System, lossing Presure

[Diyisfun]

Potterton Suprima 60L Sealed System, lossing Presure.
I dont have any leaks that I am aware of.
The boiler trips off every day (last 3days), the pressure drops to about 0.25.
I use the filling loop top it back to 1bar, & the boiler will reset & run for another day, then trip off.
Do I have a fault with the expansion vessel?.
The boiler is situated in the loft so not easy to keep getting to it.

 

[kevplumb]

Do I have a fault with the expansion vessel?.

possibly

check the prv pipe is not dripping as well

 

[Diyisfun]

prv pipe?

 

[jackthom]

The Pressure Release Valve which blows if the system pressure gets too high.
They have been known to leak a bit afterwards under normal pressure too.




If the pressure has risen to around 3bar when the boiler is hot it will be due to the expansion vessel which may just need re-inflating

//www.diynot.com/forums/viewtopic.php?t=37170&postdays=0&postorder=asc&start=2

 

[Diyisfun]

Jack
Thanks for that & the link

 

[Diyisfun]

Sorted...Leaking t/stat rad valve