Unexplained noises?

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

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Turn dial which way to increase speed?

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).

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Grundfos 1550 ch pump installation?

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.

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grundfos cu301 reads voltage alarm?

voltage alarm is what my system reads. I have no water coming into the house. can anyone help me.

how can I fix my old glow worm central heating boiler model 65-80?

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

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grundfos 15 50 130 heating system ?

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

Heating?

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

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Grundfos Pump Plan wiring Centre part 96437234?

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

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pump diagram?

Dear friends, thanks a lot for your tips that solve my problem of jamming but how can I dismantle the pump itself, Is there any diagram or procedure for cleaning of sludge inside of pump (grundfos ups ... more

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Grundfos UPS 15 45 x18 central heating pump?

The tests shown confirmed that my pump still works without the Capacitor .The Original Bosch Capacitor is rated as follows: 3uF ( microfarad) +/- 10% b 320V ~DB -25/85 degree C . It measures Length ... more

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Baxi Boiler Part?

I'm looking for a replacement boiler part - Grundfos UP 15 60 AQ P/N 59926507. I can’t seem to find a pump with the exact make and part number. I’m wanting to know what the equivalent replacement ... more

baxi 105 HE boiler problem?

my baxi 105HE heats water to the taps but CH wont come on.the grundfos pump is hot and not seized.i have not used CH for a while and wonder if the boiler needs restting having already tried to reset i ... more

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grundfos MK 2 15/50 x 18 playing me for a fool?

hi, i noticed this morning that my hot water wasnt hot. i checked my timmer and noticed the fuse to the mains had blown so replaced it. re set the time and it worked fine... that is until it was "heat ... more

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