Switch the boiler off at the isolation switch/fuse spur (this should be located near your Hive Receiver next to your boiler). All of the lights on the receiver will then go out.
Please be aware that this will reset any heating/hot water schedules that you currently have set up.
Press and hold down the ‘back arrow’ button and the ‘menu’ button on the thermostat at the same time (these are the bottom left and bottom middle buttons below the silver dial). Keep these buttons held down together until the thermostat display says ‘Welcome, searching’ then remove a battery from the thermostat.
In order to connect the receiver to the hub, you will need put the hub into pairing mode. You can do this by selecting ‘Install devices’ within the Hive app menu. From there tap ‘Add another device’ and then ‘Go’ which will start the hubs search. Leave the hub searching until the receiver status light changes to a single flash of amber.