volkera pressure problem

[leeajsl]

Hi my volkera compact has a pressure problem i have reset the presure to the right setting but it keeps rising into the red even if i am not using the heating or hot water i have checked the loop and it is ok and not letting water into the system can anyone help

 

[twgas]

plate heat exchanger passing. have you actually disconnected the filling loop?

 

[leeajsl]

Hi Mick yes only took it off today have dropped pressure again but on the rise again.

 

[twgas]

assuming you've not got the boiler firing, as ststed in original post, then I believe the plate heat exchanger is the only other possibility.
Sorry, but the compact doesnt appear to have a plate heat exchanger . it will be the main h/ex as this does both CH and HW on the compact

 

[glasgowgas]

reduce pressure to 1.5 bar

close cold water inlet stop cock underneath boiler

(do not use heating or hot water)

if no pressure rise,then bithermic heat ex internally holed

 

[leeajsl]

Thats correct it happens with the boiler not firing, when it dose fire up the overflow kicks in is this an expensive job.

 

[leeajsl]

Thanks glasgogas will try that.