my boiler has started making a loud banging and grinding noise googled the problem and said it could be an airlock,as the boiler has automatic vents to prevent this, could it still be air in the system..
easy tiger,actually it was a freind who is on th GS registar.no money changed hands i done his roof and he put the system in.
just trying eliminate things.
he is going to drain system and put a cleaner in to see if that can sort it..
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