I have hot water overflowing into the loft expansion tank?
grundfos selectric 15-50?
Grundfos Selectric UPS 15-50 pump?
Problem refilling CH system after fitting Grundfos 15-50 130 selectric pum?
water is filling the header & expansion tank via the feed pipe to the pump?
the pump stays on after the heating has switched off?
how can i stop my grundfos pump jamming ?
Turn dial which way to increase speed?
The pump appears to be operating when central heating is not on?
water pressure dropping ?
Grundfos Selectric 15-50 - noisy when on, intermittent banging?
Can I stop the start-up noise from my Grundfos UPS 15-50?