Does your dimmer work well manually but your hub's interface shows an error? 

If your dimmer is generally unresponsive to your Z-Wave hub, it may be connectivity or range issue. Your S2 Dimmer has range of 500 feet (line of sight). However, range can be shortened by interferences like metal and glass, thick walls, and even large furniture. Ultimately range is determined by the specific structure of your home and the layout of your mesh network.

If you're seeing connectivity issues with your dimmer, here are some tips that have helped other users in the past:

1. If there's a way to refresh your Z-Wave network, give refresh a try. This will reset the connections between hub and switch, and help your hub find the most effective communication route to the switch.

2. Try excluding and re-including the dimmer directly from its location with nothing moved around. Just like network refresh, maybe the hub hasn't found the most efficient communication route to the dimmer; exclusion can help revitalize those connections. You can also try resetting the dimmer to factory defaults and then re-including it to see if that helps. 

3. If you have a Z-Wave signal repeater on hand, try installing it between the dimmer and hub. A signal repeater is any non-battery powered Z-Wave device: plugs, relays, a dedicated range extender, anything that doesn't rely on battery for power. The repeater should give the signal a boost and help your hub establish solid connections with the switch - Z-Wave Plus range extenders will be twice as effective as regular Z-Wave range extenders.

4. It can be annoying to do, but you can also try relocating your dimmer or moving your hub closer to the device temporarily. After moving either the dimmer or hub closer to one another, remember to exclude and re-include the dimmer to allow them to re-configure. If the issue improved, the previous location may have been out of range. 

5. Check the material of your switch box. If it's metal, this may be the source of the issue - especially if you've never had good connectivity between the dimmer and hub. Metal is really effective at disrupting Z-Wave signals; since the dimmer is essentially encased in metal, it can prevent signals from being sent or received. Adding a Z-Wave signal repeater as mentioned above would be good to try if you have a metal switch box. 

If none of the above solves the problem, let our team know!