the hot water will only work when central heatings on .heating will not turn off via external clock ,only by turning off power to boiler.checked using intrnal clock.same. had pcb changed .no difference. heating programmes not switching off despite clock apparantly working normal. any ideas?

badger, February 2009

when you turn top an boiler fireup but water go cold and you get no hot water

steve, March 2009

hat water go cold when top is runing and boiler fireup

steve, March 2009