help with worc bosch hi flo440 pls

[Robustini]

Im trying to get a heads up for my Gassafe registered fitter.

Worcester Bosch HI FLO 440.

When the hot water is opened fully. I get a leak under the boiler and I lose pressure on the heating side. If we draw water slowly all is ok.

Any ideas please.

Thanks in advance

 

[muggles]

Do you also get a leak when your central heating comes on and gets up to temperature?

 

[Agile]

Why are you asking us here when you have a gas safe person coming to see it?

We have never seen your boiler!

Tony

 

[Robustini]

Do you also get a leak when your central heating comes on and gets up to temperature?

Muggles, thanks for the response. No the heating is working fine no leaks, Only seems to leak when hot water fully open.