Loud Banging Pipes

Please help! Everytime our heating comes on we have several minutes of very loud banging which sounds like someone hitting the pipes with a hammer. It then seems to clear itself and then works fine.

We put a cleaner in the system and then drained it down, (clean water came out) and have not put inhibitor in but the problem is still happening.

The problem started after the system had been turned off for 3 weeks in the winter.

What else can we try and is it going to damage the system if left?

Please can someone help, its driving us mad!

Banging sounds are often the result of the boiler doing what its name suggests - boiling!

Yes - it will definitely damage something if you leave it!

Any half-competent heating engineer should be able to locate and fix it quickly, a competent one more quickly.

thats me out of it then

Hi I had banging sounds in the pipes particularly close to the boiler and seemingly in the boiler . This turned out to be an intermittently failing pump. This caused the water to boil i imagine in the pipes but I was able to test it in the loft before purchasing a new one.

Regards,
Chriso

Further to my previous post I found on testing / monitoring the pump in the loft that on speeds 1 and 2 it wouldn't work but it worked poorl and intermittently on speed 3.
Chriso