Hi ive managed to figure out the problem.I was led to believe the grey/white wire was the switching wire as many sites state.Ive found out that is actually a neutral.What i presumed was the black neutral is actully the switch wire. If i was the original installer i would have put black/blue tape...
Hi all.
Im trying to convert my thermostat from a old Honeywell T6360 analogue stat to a new Honeywell DT90E.
The wiring consists of [ L brown] [ neutral black] [ boiler switch on white] [green earth] NO C wire.
Im trying to fit the DT90E as follows from a youtube video also going by the...