I have a Grundfos Multihead G 230v central heating pump ...
I have a Grundfos Multihead G 230v central heating pump which has been fine up until a couple of days ago. Now when the heating is off it makes a loud ticking noise and only stops when the heating comes back on again. ... When the heating comes on (or you turn it on using the manual override on the time clock) what i believe is the spring ...
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