Unable to re-pressurise Vokera Syntesi

[C4mrin]

Hi folks, I have a 3/4 year old Vokera bolier that will not re pressurise.

My pressure has been dropping over a while and I bled a radiator today that seems to have dropped the last of the pressure.

I get "04" error - low pressure.

I have attached the flexi hose and checked that the hose is clear and that water comes out when I turn to the fill position.

I have tried filling when the boiler is in the off/reset position and when in either HW or HW/CH mode but there seems no obvious filling sound.

Any ideas?

 

[Agile]

Never bleed rads unless you know how to refill and are sure its working properly.

Tony

 

[C4mrin]

Thanks for your response. The rad was cold and started to warm up before the pressure dropped.

Rad aside - any suggestion why the boiler might not be filling?

 

[Boilerman2]

Downstream filling valve closed? the Vokera has a valve each side of the filling loop!

 

[C4mrin]

Yes I have opened both valves - Lever to the fill position and a small threaded turn valve that is unscrewed open.

 

[C4mrin]

Valve with threaded open/close mechanism was gummed up inside keeping non return valve closed, This was replaced and now works fine.