Pottertan Combi Boiler banging sound

airops1

Hi All
First thread to this forum so i apoligise if this has already arisen

We had a Pottertan Promax Combi Boiler fitted 3 weeks ago and it makes a intermittant Banging and grinding sound.

When it was first fitted the dial went into the red and the engineer came back and reset it but it has not resolved the problem with the banging

Is there anything i can do or if anyone needs any futher diagnostics with i shall try to assist
Thanks

penrhyn

Was this a replacement boiler?
If so was the system flushed properly, it sounds like an airlock, or possibly a problem with the pressure vessel especially if the pressure is going into the red.

Are all the radiators heating up?

You could try turning down the boiler temperature a bit as well.

gas4you

Banging is usuall bad circulation and the grinding could be the pump. As it's new call in the manufacturer under warranty.