Would be grateful for any advice,
Halstead Quattro Gold combi central heating boiler 17yrs old, loosing water pressure at a rate of one tenth of a bar per week.
Leak stains which appear dry(please see attached photos)around diverter valve that situated o the right of the boiler but dampness underneath the boiler on the left
Is it time for a new boiler of any advice on how to fix it?
Thanks