I have an outdoor combi boiler which is three years old (oil fired). When the heating is switched on (more so from cold) there is a really bad banging from what appears to be the second radiator in the line. As this is in a bedroom it wakes most of the house up !!
It sounds like it comes from the thermo valve but this has been changed twice and has made no difference. I have bled the system which is pressurised and appears to be ok. I have 12 rads on the system and this is the only one that is a problem.
I have had this problem from installation, it was put in early spring so not used for the first months until winter and by that time the installer had gone out of business.
Any ideas would be appreciated.
It sounds like it comes from the thermo valve but this has been changed twice and has made no difference. I have bled the system which is pressurised and appears to be ok. I have 12 rads on the system and this is the only one that is a problem.
I have had this problem from installation, it was put in early spring so not used for the first months until winter and by that time the installer had gone out of business.
Any ideas would be appreciated.
