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It was the pump after all. Got it a new one fitted today. Thanks everyone :)

I've bled the radiators and still no joy. Tried a few plumbers and they're busy till at least the end of the week.. brrr. If anyone can recommend a plumber in the Huddersfield area or who can suggest anything else I can DIY, I would be most grateful, thanks.

Ah ok thanks, I will bleed the radiators then to see if that clears it. The pump still whirrs but I guess that doesn't confirm anything... The boiler has been banging of late when it's switched off - I understand this is due to it overheating. I will probably call someone out tomorrow as it...

Hi, no I've not bled the radiators. Do you think that would be worthwhile? The radiators seem to be heating ok (when the heating is functioning!). Do you mean you don't think it's the thermocouple? Just to clarify, the pilot light goes out when the thermostat kicks in and I have to restart the...

I am ashamed to admit, it's not been serviced for several years! Might the overheating be due to a faulty thermocouple? If so, it shouldn't be too expensive no?

New info: The boiler seems not to turn on again (when adjusting with the thermostat) and just keeps whirring like before... until I press the reset button again. Any thoughts?? Thanks.

Well, I've pressed the reset button on the boiler and it's working again but it's seems to be chugging away and making some funny noises.. It sounds like something's on its last legs... Here's some more info: Glow worm KFB Spacesaver boiler Honeywell control unit Sunvic thermostat dial...

I've a Glow-worm central heating boiler with a Grundfos 15/50 pump. The pump is whirring (like it's blocked) but not firing the heating or water. It was working ok earlier this evening and I noticed it went cold... so it's stopped working just like that. Do you think it's kaput? Or is there...