My pipes are making excessive noises (baxi Combi 105 he)

[jaylouise]

i have recelently moved into a new house and have a
Baxi combi 105 he
Every time i switch the boiler on after about 30 - 60 minutes the pipes make a real loud banging noise and continue to do so until i switch the boiler off.

i read a post on this site simular and have tried what they have done.
I have bleed all the radiators, working from the one closest to the boiler.
i have checked my pressure gauge and is at 1.5
i have lowered my radaitor dial less than a quater full and yet it still makes the noise

Can anyone help please?

 

[Slugbabydotcom]

First thing I'd be checking is the temperature sensor. Thats what is supposed to turn the boiler off when it gets too hot

 

[gas4you]

What temp lights are on on the boiler front when banging occurs?

When you turn boiler stat down do less of these light up?

 

[jaylouise]

yes have checked the cental heating temputure sensor and that is running correctly


when the banging accrues the forth light flashes 60oc, and the decription in the manual says,

Fault on pump or low pressure system

 

[jaylouise]

when i turn the boiler down to a quarter, only two out of six lights flash

 

[Slugbabydotcom]

when i turn the boiler down to a quarter, only two out of six lights flash

You say the 60º light flashes Whats the other one?

or do you mean that they just come on?

One possibility is that the pressure guage isn't reading correctly Up the pressure just a little and see if the guage moves.