Leaking Boiler

[BM]

I've recently moved into a property which has a combination boiler. The boiler has been working well, I had to drain the radiators, after that the boiler was still working without fault. Only recently has the boiler been leaking. It leaks from the underside, from a hole, its not a lot of water but it is fairly constant dripping.
The other day (after it had started dripping) the isolator fuse went on the boiler; I replaced this and the boiler worked again. There is nothing obvious causing this dripping and it doesn't appear to be stopping the boiler from working but I am just concerned because it obviously isn't right!
Any advice would be most welcomed.

The boiler is: OPTIMA 701, FERROLI.

Thank you

 

[gas4you]

Only recently has the boiler been leaking. It leaks from the underside, from a hole, its not a lot of water but it is fairly constant dripping.

What do you mean by 'hole'?

Try to describe more accuratley. Boilers should not have any holes that leak in them

 

[BM]

All I can say is that it is a hole just off centre at the rear on the underneath of the boiler; probably 1/2" in diameter...sorry I can't be more specific...there isn't anything going in or coming out of this hole!

 

[ollski]

you will need to have a look inside to get an idea at the moment it sounds like it is just collecting in the base tray.

 

[Gasguru]

Maybe the safety valve pipework is not plumbed in and the expansion vessel is low on pressure. What does the pressure gauge show when the boiler starts leaking?

 

[BM]

I believe that it does have something to do with the pressure as the pressure has been dropping and I've had to keep topping the pressure up. I wouldn't say that it conincides directly with the boiler leaking though. What would you suggest to test the expansion vessel?

This is an image of the hole if that helps!



Thanks[/img]

 

[bengasman]

if you can remove the -white part wiht the hole in it- on the photo, you should be able to see better where the water comes from.
make sure the electricity TO the boiler is switched off