Boiler keeps resetting itself

[steant]

Please help no hot water or heating ???

The boiler in question is a potterton suprima 40 it is 5 years old and about 2 years ago had the PCB replaced, And has been fine every since.

But as of a few days ago i tried putting the hot water/heating on and it goes through the motion fires up ok for about 2 seconds and just dies, does this 3 times before needing to be reset, it has came a few times but it is very hit and miss especially in the cold mornings.

What i have noticed is that when it does work i hear water flowing into the boiler but when it swiches itself off i dont, im sorry if im stating the obvious but could this be some sort of airblock pump issues ??? (im useless at D.I.Y. etc) if so what could i do.

Ive also noticed a radiator in the living room is hot at bottom cold at top so i believe this needs bleeding , could this be connected ??

Please help, as so close to christmas i could do without the need of enginneer visits if at all poss

Thanks

 

[bengasman]

Sounds like air, start with bleeding. May not do the trick if air is being sucked in, usually soiled system, common problem with open vent. Read faq

 

[steant]

bled the feed and downstairs rads, still not happening think it probably a pump problem ?? if so how much approx is new pump for suprima 40 fitted, any ideas ???

 

[steant]

Its fixed thanks for all your help you bunch of BALLCOCKS!!!

 

[gas_man_gaz]

thankyou come again