Hi ..I am having a problem with my central heating system, the boiler, pump, programmer all work fine for hot water, the central heating dos'nt, I have checked the room thermostat and this appears to be ok, I am now looking at the Honeywell 3-port motorised valve, its in the auto position but if I push the lever towards the manual position the pump starts and runs for about two seconds and then the motor/springs on the valve push it away from the manual position, should this lever move depending if I want hw only, or hw and ch or ch only? sorry for rambling on Dave
