Fix Fault Grundfos

Good day, I have been experiencing a problem with my domestic heating system. There are occasions when the system makes noises that seem to indicate that water is circulating. These occasions however ... more

I have a grundfos selectric ups 15-50 pump. Do I turn grey dial clockwise or anti-clockwise to increase speed? (There are no indications on pump).

Can anyone refer me to a location where I can download installation instructions for this pump. I have seen a reference to the Screwfix site but that does not seem to have the information now.

several months ago the ignition on my conventional flue boiler failed to stay alight and I had an idea that it was caused by a faulty thermocoupler(?). I called in an engineeer and this proved to be ... more

changed a radiator , flushed out another , balanced all radiators but still have some red hot others hardly warming . tried bleeding all rads but a few have no air or water bleeding out , also how do ... more

I have an old Ideal W boiler (conventional) which heats the water cylinder and will go to central heating only by selection . Does the central heating operate only by having the water pump (Grundfos ... more

Grundfos pump Plan wiring centre fault boiler on constant demand. Heating Engineer informs me that it is a fault in wiring centre which is no longer available from Grundfos Boiler is Evo HE without ... more