Your ZAC36 Actuator could be experiencing a range or connectivity issue if it shows offline, or does not respond to Z-Wave commands.

The Titan Valve Actuator has a range of up to 400 feet line of sight (up to 130 feet indoors) and uses the latest 700 series Z-Wave chip. Even so, the range is determined by the specific structure of your home and the strength of your mesh network. Interferences like large furniture, thick walls, or metal elements can shorten range.

If your ZAC36 shows as offline or is unresponsive to Z-Wave commands, here is what you can try:

• If your hub offers a method of refreshing the connections of your Z-Wave network, give those steps a try. Hubs will refer to this action differently, (in SmartThings it's called Network Repair, in Vera it's called Update Neighbor Nodes, etc), but the effect should be the same. This should help configure your network and allow your hub find the most efficient communication route to the ZAC36.
• Try removing and re-including the ZAC36 again from the installation location. The hub may not have found the communication route to the device on the first try.
• Bring the device closer to the hub, or the hub closer to the device if possible. If the device includes successfully and stay connected, the previous spot might have been out of range or there were too many interferences in that location.
• Add a Z-Wave signal repeating device in a location between the ZAC36 and hub, if you have one available. A signal repeater can be any Z-Wave device that doesn't rely on battery power - switches, relays, smart plugs, or dedicated repeaters. If the issue is caused by interference or range, a signal repeater can help strengthen and stabilize connectivity. After adding the repeater, it's a good idea to refresh the network once more. 

Send us a message if your Titan Valve Actuator still has trouble connecting after trying the above troubleshooting steps! We're always here to help.