Hi I am having problems this winter with my vokera compact a couple of people corgi registered have been out and are not able to tell me what is wrong,firstly my pressure for the hot water is poor,secondly the pressure keeps alternating and thirdly the boiler is making some scary noises any suggestions to what may be wrong please?

helen, December 2008

sounds like its full of air mate is auto airvent open inside boiler,has pump been bled

steve, December 2008