The pump which is linked to my Glow Worm Utimate boiler is not always switching off even after the Programmer abnd boiler are off

Gordon R, August 2009

Thanks for the pointer - I will have a look at the thermostat. I assume it is the boiler stat and not the Hot water stat you are referring too?

Gordon R, August 2009

the system may have a pump over-run thermostat built in, some glow worm boilers do. it should stop the pump after a few minutes once the boiler has cooled down enough to prevent overheating. if it's staying on for more than 5 minutes i'd guess that the thermostat may need replaced.

Ian, August 2009