Glow-worm Swiftflow 75/80 Combi Boiler - can you please help. the hot water runs for a bit and then goes cold - you can hear the boiler fire up and down when it does this, but the heating is still red hot and the pilot light stays on. It does this every year, especially in the winter months. Can you please advise?

Dean

Dean Want, February 2006

But the swiftflow doesn't have a diverter valve does it???

Boris, December 2007

YOUR DIVERTER VALVE IS STUCK IN HEATING POSITION NEW DIVERTER VALVE

GORDON, February 2006