Unexplained noises?
Turn dial which way to increase speed?
Can I speed up my grundfos selectric 1550 pump?
how can i stop my grundfos pump jamming ?
grundfos MK 2 15/50 x 18 playing me for a fool?
The pump appears to be operating when central heating is not on?
Hot water from boiler filling expansion tank?
Problem refilling CH system after fitting Grundfos 15-50 130 selectric pum?
Grundfos Selectric UPS 15-50 pump?
Problem after changing ch pump on a grundfos pump plan?
I have hot water overflowing into the loft expansion tank?
the pump stays on after the heating has switched off?