If there are no lights on the receiver, it usually means that your boiler is not receiving power. Follow the checklist below to resolve the issue:
Check the Main Isolation Switch:
Check the Fuse Box:
If you have managed to get a light on your Hive Receiver, it may take a few minutes for it to reconnect to your other Hive devices. After five minutes, refresh your Hive App and everything should now show as online.