load grinding type noise then boiler stops

[gaz3787]

Right, first off I have a boiler in my kitchen which usually fires up when i run thej hot tap and a cylinder boiler upstairs in the "airing cupboard" that has all the time switches on.

My problem is with the one in the kitchen. When it starts up it runs for 5 secs but as it really kicks in as it used to it makes a high mechanical engine type noise, like gears grating or something. Its a rapid noise that lasts for about 3 seconds and then the boiler cuts out. I thought it may be trapped air in the pipes or something but due to my total lack of knowledge in this area I am buggered.

Does anyone know of any things I could try before ringing someone who will charge me loads and it may be something simple

thanks in advance

 

[ollski]

fan at a guess but then I don't even have a clue what boiler it is.

 

[Nige F]

Derek Acorah.........he`s a Psychic Scouser. .......or mechanical screeching could be the pump trying to run ....siezing and the boiler then going off due to overheating

 

[gaz3787]

fan at a guess but then I don't even have a clue what boiler it is.

the name of the boiler is POTTERTON 9016 Suprema 30

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Nige F wrote:
Derek Acorah.........he`s a Psychic Scouser. icon_wink.gif .......or mechanical screeching could be the pump trying to run ....siezing and the boiler then going off due to overheating


any ideas on how to fix or what to do to try or is it an engioneer job