Thanks, yes missing wire now installed but If I+P are set, the timer works but setting 'CH only' illuminates the HW light too. Guess as previously suggested it depends on the sequencing.
Thanks for your help.
I connected the HW OFF up to terminal 4, but still no success, even when I manually connect L to terminals 1 and 4 of the programmer.
However, the when the jumpers on the back of the programmer are set to L+P and programmer is set to CH only, the HW comes on when below...
Is there a standard way (order) to configure the wiring centre?
Also the DST setting on the programmer will not advance the clock time forward one hour when set. Why is this?
1 Brown Boiler L
2 Black Boiler N
3 not connected
4 not connected
5 Yellow Programmer HW ON
6 Yellow Room Thermostat (calling)
7 Red Programmer CH ON
Red Room Thermostat
8 Green/ Yellow Boiler E
1 2 3 4 5 6 7 8
1 Brown Pump...
Hi
I have a glow worm space saver 52 with a British gas UP2 (Drayton LP722) programmer, a Grundfos pump and a Drayton mid position valve. Fully pumped system.
Looks like a standard Y plan arrangement but no connection to the HW off terminal on the programmer. When I (hard wired) connected one...