Noisy boiler problems

[Lalapitchy93]

I've just moved into a house with an alpha he 25 combi boiler.

Everything was fine until yesterday the boiler lost all pressure
We spoke to a plumber who advised us how to repressurise the system to avoid a call out charge. Since then the boiler and pipes have been making a moaning noise (like a vibrating phone on a table) when the heating is on.
It only stops when the water taps are opened.

Is there any way to stop this noise? It's waking up everyone in the house and it's too cold to not have it on

Thanks

 

[Chalked]

Have you turned the fill valves off properly?

 

[newcastle phill]

Did you fill it til the guage reached approximately 1 bar (cold)
And when you turn the heating on does the pressurr guage swing right over past 3 bar pretty quick ??

 

[Alpha man]

Welcome to the world of Alpha.