I hope someone can help me, the wiring on my Honeywell ST9400c programmer as from left to right. earth wire, next blue neutral wire, next brown live, next number 1 white, number 2 as no wires. number 3 black, and number 4 brown. The problem I have the Tado diagram has not shown where to connect the earth, the diagram also shows white to HW/HC, black to HW/NO and brown to CH/NO, The problem is the diagram shows number 2 (no wire) to go to CH/NC, so how do l connect CH/NC.
I have sent an email to the install team not sure when l will get a reply.