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fixed4free.com > Heating, Home Heating Systems > Question
Heating, Home Heating Systems

heating, home heating systems, central heating, heating, cold, heating system, radiator 2,933 other questions

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Central Heating boiler pump running continuously?

It's a grundfos pump working with a Potterton Suprima 30L wall mounted fan assisted balanced flue gas boiler.

The boiler tripped out last night when I had it on the 24 hour setting to heat some water up. Pressing the reset button had no effect.

I turned off the temperature control and programmer but the pump continued to run. It was n't until I turned off the mains supply did the pump stop. I left it until this morning but when I switched the mains supply to the boiler on the pump started up again and continues to run all the time. Again, turning on the programmer to activate the boiler and the temperature control and pressing the reset button had no effect.

If someone could diagnose what may be the problem and the possible cost to repair I would aprreciate it very much.

Cheers

Rob     September 2010
 Click here if you can answer this question 

Thanks Ian, I will need to take the cover off the boiler for that. I checked the terminal block at the pump end.

The boiler was installed in Feb 2002 and has been running OK except a while back when it kept tripping out. I seemed to have solved this by easing off the big screw in the middle of the pump then tightening it up again. Is this screw meant to be tight? Thanks

Rob     September 2010
 Top

pumps are wired directly into suprima boilers. check the wiring is ok at the boilers terminal strip.

Ian     September 2010
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