we have a megaflow cl148 cylinder and attatched is a grounfos alpha pump. all last night the pump was making a rythmic pumping noise spo loud it could be heard outside the back door of the house. which finally stopped at 08.30am 10 hours after startiing. it's in the airing cupboard, so we removed everythin g from there. it started again whne the central heating went on at 7pm, but this time the actuator valve reset automatically and it stopped the pump. I also noticed that when "pumping" the green power light on the groundfos flickered.
anything we can do to stop it?
anything we can do to stop it?