Is this green copper oxide crust normal?

[Paddy Ward]

Hi there
I got a Vaillant ecotec pro28 gas combi boiler installed almost 11 months ago. Recently I have had to allow water into the heating system due to the pressure dropping. I realise this could be a leak somewhere so I started from the boiler as I can't see any dampness/signs of a leak in the house. The pipe shown is the central heating supply and, as you can see in the photo, there is copper carbonate (not oxide as written above)on 2 of the nuts. Would it be safe to assume there is some water escape from these areas?
Any advice would be appreciated

 

[gassafe]

Yes, tell the plumber the return pipe is leaking below the boiler.

Keep an eye on it, it may only leak when hot or cold etc...

 

[jonnyswamp]

As gassafe says, there is/was a leak, also topping up pressure once in 11 mths is pretty good
You need to check the system pressure regularly (monthly should be fine) and top up accordingly

 

[Paddy Ward]

As gassafe says, there is/was a leak, also topping up pressure once in 11 mths is pretty good
You need to check the system pressure regularly (monthly should be fine) and top up accordingly

Thanks for the reply guys. It has had to be topped up every couple of days lately, not just once in the past 11 months. I was away for 2 weeks over Christmas and the 2 furthest radiators (upstairs) from the boiler had to be bled as they were full of air too!

 

[lame plumber]

if its dry leave well alone for now, as its probably sealed itself up now

 

[Paddy Ward]

if its dry leave well alone for now, as its probably sealed itself up now

It seems dry. But I had to repressure the system twice in the last week so dunno what to think. I wanted to get it sorted before the 1yr guarantee from the plumber runs out

 

[Roger Welton]

11 months old, it's nearly due for its annual service so get him back for that, he can rectify any other issues at the same time, though let him know before he arrives so he can allow time.

 

[Kev the gas]

As Roger said, call him back for the service before the warranty is out.

If there is a fault with the boiler he can contact Vaillant for you.