Chaps hi,
hoping for a bit of advice here. I have recently moved house to a property which was built circa 1987. One item picked up on the survey was that when the bolier came on (ch or hw) it made lots of loud banging noises. So it has been doing this for at least 6 months
This didn't bother us too much but now we have started to use the CH with the onset of winter it is waking us up every morning with a
*very* loud BANG. Having recently had the old analogue programmer fail (and having to update it and the thermostat myself) I have decided that it has to be worth an attempt at self diagnosis - and then possibly trying to fix it myself or get some one in.I have looked through similar posts but was hoping that this might make sense to someone out there.
Here is all I can tell you about the system.
System type: Fully pumped, Mid Position valve system, install 1987 by builders Boiler: Thorn EMI apollo fanfare i Pump: Grundfos Selectric (TF110 IP42)??? Mid position valve: Sunvic SD2752
The rest of the kit (stat, programmer etc seems fine)
The bang happens when the heating or HW comes on, normally makes 3 or
4 bangs and then is quiet until the next time it goes off for a while. I have checked the rads and there is no significant air in the system, the noise seems centred around the cupboard where the boiler, pump, HW tank are installed. The bangs seem to travel through the pipes and it seems that one pipe has now broken the plastic clip it was in - symptom not cause though I think. The only other thing I can think to add is that in some rooms as the CH or HW comes on the radiators make a sort of rattle - like some hard sediment in them is bein disturbed by the water flow?Any tips as to what I should look for gratefully received
Tim