Sharp DN3E6JE074 User Manual page 15

Node Replace
Reset (Factory Default Reset)
To replace a failing Node to another equivalent device, press
"Replace" in Settings dialog, and tap the Node ID you want to
replace in Node Replace dialog. Gateway Operation dialog will
appear.
Press "RESET" in Factory Default Reset dialog. This will reset the Z-
Wave chip and all LEDs blinks, and the IoT Gateway will broadcast
the "DEVICE RESET LOCALLY NOTIFICATION" after restart.
If this controller is the primary controller for your network,
resetting it will result in the nodes in your network being
orphaned and it will be necessary after the reset to exclude
and re-include all of the nodes in the network. If this
controller is being used as a secondary controller in the
network, use this procedure to reset this controller only in
the event that the network primary controller is missing or
otherwise inoperable.