I have a pressurised system with a worcester greenstar 15Ri boiler and a hot water cynlinder. The blue light on my boiler is solid which I believe is correct but the green gas light never comes on and when I switch the boiler on it just whers and whers.
I've let all air out of rads and also repressurised the system back up to 1 bar as it was low but still no joy.
I've let all air out of rads and also repressurised the system back up to 1 bar as it was low but still no joy.