Need help wiring a new digital thermostat

[clydey]

its just been flagged up that it is possible that the earth (green/yellow) has been used as a switched live
if this is so then there is no earth on the cable and it is dangerous.
without being there and with your limited knowledge you could be in a dangerous situation
as not everyone would wire the honeywell conventionally
ie connector 1 live con 2 neutral con 3 earth
when it blew the fuse i assumed you had an earth connected that shorted out the live feed
knowledgeable and skilled people dont just try any combination as its not like baking a cake
you may have started with an unsafe situation that needs to be checked by either a heating engineer or a sparky with central heating wiring experience
its better to get it checked by a pro
sorry best i can do for you
cheers

 

[marc1977]

ok below is a picture of my old setup. I haved a brown wire in position 1, a blue in position 2 and a yellow/green at position 3. Can anyine tell me which relates to C, ON & OFF on the new stat?