Hello everyone
First post so be gentle! Have done a search to see if my particular problem has been covered but can't find it so hence the reason for my post.
Had a two storey extension added to the house in 2009 and the old boiler was replaced with a Vaillant ecoTEC Plus 618. All was well until last year when it began to lose pressure and the heating and hot water wouldn't come on. I would add water and everything would be well for a few weeks or a month then the problem would return.
Earlier this year our plumber came and repaired it saying it was a valve and mentioned the expansion vessel. Everything ran well until about two weeks ago when the problem returned. I now have to top up the water every 2 or 3 days.
Anyway before calling in another plumber I decided to investigate. From posts on here I checked the pressure in the expansion vessel which was low (0.4) so I have increased this to 0.9 bar.
I also noticed that a valve on top of the pump (arrowed in attached photo) was covered in limescale crud so I cleaned this off. This is now showing a slight weep so perhaps this is my problem?
https://www.flickr.com/photos/160315577@N06/38559269061 [/IMG]
Thank you for any help and advice which will be gratefully received.
John
First post so be gentle! Have done a search to see if my particular problem has been covered but can't find it so hence the reason for my post.
Had a two storey extension added to the house in 2009 and the old boiler was replaced with a Vaillant ecoTEC Plus 618. All was well until last year when it began to lose pressure and the heating and hot water wouldn't come on. I would add water and everything would be well for a few weeks or a month then the problem would return.
Earlier this year our plumber came and repaired it saying it was a valve and mentioned the expansion vessel. Everything ran well until about two weeks ago when the problem returned. I now have to top up the water every 2 or 3 days.
Anyway before calling in another plumber I decided to investigate. From posts on here I checked the pressure in the expansion vessel which was low (0.4) so I have increased this to 0.9 bar.
I also noticed that a valve on top of the pump (arrowed in attached photo) was covered in limescale crud so I cleaned this off. This is now showing a slight weep so perhaps this is my problem?
Thank you for any help and advice which will be gratefully received.
John