I have a vaillant ecotec po 28 boiler in my new home, which produces gallons of hot water, but as son as I turn the heating on the pressure gauge goes through the roof! I followed the manual guide, and aparently the pressure is too high (2.2) even when the central heating is not turned on. Any ideas how I can remedy this?
I have changed the "diverter valve" using a qualified plumber and I have developed a similar problem. I tried reducing the pressure by draining the radiator as recommended by one of your readers but it still goes back to 2.8.
harry cox
December 2013
Thank you, i managed to reduce it to 1.4, but the pressure is still rising when i turn the ch on, (as is the water temperature?)
ice maiden
November 2009
Thank you, i manged to reduce it to 1.4, but the pressure is stll rising (as is the temprature?)
ice maiden
November 2009
2.2 bar is indeed high...bleed some water out from a convenient radiator bleed valve - it takes a while and you'll have to remove a pint or so but its the most boiler friendly way. When done - at around 1 bar - expect the pressure to rise to about 1.3 bar or close.
John
November 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.