When a Genius Radiator Valve has no valid paths of communication back to the Genius Hub it can no longer accurately control the heating of the room to the schedule non the app. This can lead to the Genius Radiator Valve heating the room when it should be off and vice-versa. The Genius Radiator Valve may display an 'E5' error when this happens.

First locate the Genius Radiator Valve which is not communication with the Genius Hub.

First the Genius Hub needs to attempt to communicate with the Genius Radiator Valve once more.

Wake up the device by short pressing one of the arrow buttons once.

If the ping failed to get through:

If the Genius Radiator Valve is still not communicating then is not able to find a route back to the Genius Hub.

There are a number of possible option to fix this:

1. Ensure all of your Smart Plugs are plugged in and powered on. These act as signal repeaters and if unplugged may stop any nearby devices from managing to contact the Genius Hub.

2. Move an existing Smart Plug closer to the Genius Radiator Valve. Moving a device which repeats the signal closer is likely to provide a new route back to the Genius Hub. If you have thick walls (or other materials which may block the signal like a metal cabinet or large piece of furniture) the Smart Plug may only be able to communicate through 1 wall in that direction.
Note: If you move a Smart Plug too far from its prior position, you may reduce the options for another device which needs to communicate with the Genius Hub.

3. Purchase a new Smart Plug to place near to this device. If you have a signal 'dead-spot' and cannot move another Genius Smart Plug closer without adversely affecting he signal coverage elsewhere in the property a new Smart Plug will be needed to provide a suitable route back to the Genius Hub.

Once you have carried out the above options (one at a time and in turn), try the previous step once more to see if the device can now communicate with the Genius Hub.