[b]Our Megaflow system, with a Valiant ecotec boiler, is two years old. A few months ago the pump was replaced because of debris inside the pump. The system was powerflushed with the new pump and radiator valves. Now, out of eleven previously working radiators, only two heat up and are lukewarm.:cry: However, the boiler and water system works perfectly well.
Any suggestions would be gratefully accepted.
Many thanks. [/b]