Thanks KEV
I will isolate the blue and see what happens
I will isolate the blue and see what happens
Need help with wiring of programmer
- Thread starter freestyle
- Start date
if you dont post back where do i send the flowers 
The bit you've missed is that the Honeywell motorised valve is what switches on the boiler and pump (via the Orange wire) UNLESS the heating is OFF and there is a call for heat from the HW cylinder stat.
The 'touching' wires should definitely NOT touch! If you have a two-wire room stat (as has been pointed out) the connections should be programmer - CH ON to 'stat - common and 'stat - call-for-heat to the White connection to the 3-port valve. Isolate the other wires in the roomstat individually.
The 'touching' wires should definitely NOT touch! If you have a two-wire room stat (as has been pointed out) the connections should be programmer - CH ON to 'stat - common and 'stat - call-for-heat to the White connection to the 3-port valve. Isolate the other wires in the roomstat individually.
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