So therefore 1 red goes to A = Live on Honeywell DT90E
that leaves me with 1 yellow / red = call
i assume that this is the other live and goes to connection marked b = neutral on the Honeywell
Thanks for your help
My old room stat is a Drayton RTS 1 -it has 4 wires
1 = blue - neutral -- 2 = red live -- 3 = yellow /red call for heat --- 4 = earth yellow
New stat is a Honeywell DT 90 E -- it has three connections
a = live -- b = neutral -- c = ????? ( shows wire linked to a via switch )
Any idea...