Service your boiler and make sure that the fan isn't starting to stick - if so then WD40 will help for a while from the service person -they should know this anyway.
ronnie
April 2007
diaphragm/ diverter valve as gone
paul
September 2006
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
