The pump appears to be operating when central heating is not on?
grunfos selectric ups 15-50?
How can reduce the noise made by my Grundfos ups 15-50 pump?
Grundfos 1550 ch pump installation?
Grundfos Selectric 15-50 - noisy when on, intermittent banging?
Replacement capacitor?
Grundfos Selectric UPS 15-50 pump?
my grundfix selectric wont stop pumping?
Problem after changing ch pump on a grundfos pump plan?
Turn dial which way to increase speed?
Grundfos Pump Plan wiring Centre part 96437234?
Problem refilling CH system after fitting Grundfos 15-50 130 selectric pum?
how to air out of the central heating pump?
water is filling the header & expansion tank via the feed pipe to the pump?
is my c/heating pump working?