C
cliverm1954
hi all,
i drained my system down to fit new lockshield vales c/w drain points to all of our lower radiators, upon refilling the pump is noisy and so is the boiler. we have a thorn apollo 15/30b on a vented system with flowshare valve. when the pump and boiler shuts down you can hear water gurgling back into the boiler, does this mean an air lock possibly or a blockage ???
i drained my system down to fit new lockshield vales c/w drain points to all of our lower radiators, upon refilling the pump is noisy and so is the boiler. we have a thorn apollo 15/30b on a vented system with flowshare valve. when the pump and boiler shuts down you can hear water gurgling back into the boiler, does this mean an air lock possibly or a blockage ???