And it looks like the issue might be back. It stopped responding to SmartThings a few days ago. Cycling the power doesn't resurrect it at all though, the button to manually open or close it still works just fine. Whenever I look at the app it just reports the door status as Unknown.
Checking the Zigbee mesh health shows 253 of 255 to the CoopBoss ID, so that appears to be healthy.
Looking at the device logs in SmartThings shows replies (voltage & amperage reports) from the device 6 days ago, even after power cycling it a few times.
CoopBoss H3Vx (Device) Events — displayed | all | from device
Date Source Type Name Value User Displayed Text
2017-02-21 8:00:09.101 AM MST
13 hours ago APP_COMMAND openDoor
2017-02-20 11:59:01.992 PM MST
21 hours ago APP_COMMAND closeDoor
2017-02-20 8:00:08.347 AM MST
2 days ago APP_COMMAND openDoor
2017-02-19 11:28:53.749 PM MST
2 days ago APP_COMMAND closeDoor
2017-02-19 9:00:08.160 AM MST
3 days ago APP_COMMAND openDoor
2017-02-18 11:59:01.473 PM MST
3 days ago APP_COMMAND closeDoor
2017-02-18 9:00:07.024 AM MST
4 days ago APP_COMMAND openDoor
2017-02-17 11:59:01.563 PM MST
4 days ago APP_COMMAND closeDoor
2017-02-17 8:00:08.253 AM MST
5 days ago APP_COMMAND openDoor
2017-02-16 11:59:01.453 PM MST
5 days ago APP_COMMAND closeDoor
2017-02-16 8:00:07.811 AM MST
6 days ago APP_COMMAND openDoor
2017-02-15 11:59:01.478 PM MST
6 days ago APP_COMMAND closeDoor
2017-02-15 1:28:51.679 PM MST
6 days ago DEVICE doorVoltage 12.296 CoopBoss H3Vx door voltage is 12.296
2017-02-15 1:28:51.347 PM MST
6 days ago DEVICE doorCurrent 0.000 CoopBoss H3Vx door current is 0.000
2017-02-15 1:28:51.303 PM MST
6 days ago DEVICE doorState unknown Door State Changed to unknown
2017-02-15 8:00:07.290 AM MST
7 days ago APP_COMMAND openDoor
2017-02-14 11:59:02.447 PM MST
7 days ago APP_COMMAND closeDoor