Boiler sounds like a plane

[simbiant]

Can anyone advise why my Worcester Bosch System boiler when heating hot water does this sort of surging/woosh/hum that's a slightly higher pitch than the normal water heating noise noise like a plane taking off every 5 to 15 minutes? It last about 10 to 15 seconds each time. It's very noisy and our old plumber who dealt with our boiler is no longer in business so even though it has done this before we can't remember what it is. Boiler is regularly serviced. Thanks in advance.

 

[ShaunCorbs]

Can you upload the sound ?

 

[simbiant]

 

[simbiant]

So at the end you'll here it going back to normal.

 

[ShaunCorbs]

do you have an auto bypass on the system as it sounds like a flow issue

 

[simbiant]

Auto bypass? Flow issue? Sorry, I'm a bit unknowledgeable about this.

 

[simbiant]

 

[simbiant]

This is all the accoutrements attached to the boiler.

 

[ShaunCorbs]

The red headed valve below the pump it’s on setting 4 atm try undoing it to 3 the red part spins

 

[simbiant]

Spinning it doesn't seem to alter it. Could it be that it's stuffed?

 

[ShaunCorbs]

Spinning it doesn't seem to alter it. Could it be that it's stuffed?

Yes the indicator should move so sounds like the issue

 

[simbiant]

Is this something that a normal person can replace themselves or is it a plumber job do you think?

 

[ShaunCorbs]

You would have to drain the heating system depends on your skill level

 

[simbiant]

Oh dear. Plumber it is!! I chose the wrong career path.