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Mend Grundfos UPS 15-50 Boiler Heating

Grundfos Selectric UPS 15-50 pump?

We have recently moved house and have inherited this pump. It never seems to stop running, day or night, even with the boiler off. Surely this can't be right?

Malcolm
February 2010
GrundfosGrundfos UPS 15-50Heating, Home Heating SystemsBoiler Heating Grundfos
sounds to me that the actuator is stuck open on the 2 or 3 port valve, only thing that will over ride programmer etc (plastic box with a wire coming out of it sitting on a brass body on the heating & hot water pipes normally in the airing cupboard)

plumb bum
May 2011
Check and see how it's been wired up.

Typically it should be under the control of the boiler - if so, then the boiler over-ride electrics are poss faulty.

What is the boiler??

Mike the boiler man
March 2010

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