VAILLANT 828E - PRESSURE

[ramjam07]

I recently bled all of my radiators and then noticed 2 days later that the water pressure was in the "red" on the Turbo Max and water was dripping from the external over flow pipe. I switched the bolier off and this reduced the pressure, but to a low level of 0.6 bar. I have tried to refill using the refill screw under neath the unit, but when I open it there is no water movement.

How do I get the pressure back up to the recommended level of between 1 and 1.5 bar?

 

[kevplumb]

fill valve is blocked or shot

assuming you are turning the key

easiest way is to fit an external fill loop

View media item 11214
if your losing water out of the prv the ex vessel has to be suspect as well