I checked the power and could detect a decent reading from live. I then ran a continuity test on the Neutral wire and this failed. I then replaced the wiring from the controller to the thermostat and hey presto its all now working!! Many thanks for all the input.
My central heating stopped working and I traced the fault to the thermostat. I have replaced the thermostat (Drayton RTS1) and the system still won't turn on. I have tried turning the dial through the full temperature range and I don't hear a click! I can bypass the thermostat by connecting the...