You may find that you have an existing wall thermostat that is setup on your system which may interfere with your new Wiser product. Two possible workarounds for this scenario:
You can turning the existing room thermostat up to max which is the same as creating a permanent connection supply.
Alternatively, you can also join these wires together from where old thermostat is. This is the same as creating a permanent supply through the LIVE-IN and SWITCH-LIVE connections. We recommend getting an electrician to do this wiring correctly.
Please also make sure to delete any existing schedules or programmes which may have been programmed previously on the wall thermostat.