Boiler Expansion? Pipe dripping

[StephenH]

I have a Valiant boiler, a wall hung thing. There's a copper pipe sticking through the wall, presumably out of the back of the boiler and it has started to drip. Is this normal? Is it likely to be a fault easily rectified or is it likely that I will have to put my hand in my pocket for new parts?
Thanks.

 

[anz]

That's a safety pipe, you've got a problem that's causing the system to pressurise too much.
You really need to get a Gas Safe engineer to come and make sure it's safe and fix the problem.

Let us know your location and someone nearby might be able to help.

 

[StephenH]

Thanks Anz. I've switched the boiler off and have a call out for the local guy. Fortunately it's summer time and we don't need the radiators on - and there's an immersion in the hot water tank. Cheers