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Mend Vaillant Increase Water Pressure Boiler

How do you increase the water pressure on Vaillant Ecotec plus boiler?

I have the above combi boiler, I am not too sure about the model no. it is about 2 years old. The pressure is .4bar and I cannot figure out how to increase this, there are about 5 pipes below the bolier and I have tried opening the valve on what appears to be the water pipe, but I cannot hear any water going into the boiler. Thanks in advance

Sam
October 2008

Vaillant Heating, Home Heating Systems Increase Water Pressure Boiler

tojo thank you so much i have been trying to find answer with no luck! until i fouund ur answer here... thank you i am now warm again :-)

tee
January 2011

Many thanks just worked for me too, the handbook is not very clear but your explanation was :-)

Eve
November 2010

thanks very much, this has helped me also. I see lots of us have had the same issue, it should come in the instructions booklet. thanks again.

Pilar
August 2010

Thanks - worked for me too, BUT.....

Cold water comes out of the right hand valve when I turn it. About 100ml in 5 seconds.

Anybody know if I should I be concerned?

Ross
April 2010

Brilliant, this helped me out as well!! Thanks!!

Mike
December 2009

thanks works

jass
October 2009

Thankyou very much for your info...it helped me too xx

sara
July 2009

The recommended solution worked for me too. I cancelled my callout! Thanks for the advice.

Sofia
January 2009

under the boiler you'll see two grey coloured valves that should say closed on them as they face you, turn both of these valves to open position, you should hear water going into system, fill to about 1 bar. make sure to turn both valves back to closed position afterwards.

tojo
October 2008