It sound like you have the most common boiler problem, dirty system water and/or sludge. The sludge blocks the radiators and pipework to stop the hot water circulating, in addition it sounds like the dirty water has solidifyed on the divertor valve and stopped this from actuating properly. You need to cleanse the system water. Products are available at local plumbing shops.
petethepisspoorplumber December 2007 |