Edit 03/20/2024 to refine a LIMITED Power-Cycle and COMPLETE Power-Cycle.
We all know the benefits of a therapeutic power-cycle of a SmartThings Hub, Computer, Router/Modem, SmartTV, SmartPhone, etc.
Just wanted to share a solution for an odd SmartThings behavior we experienced.
Your results may vary, but I would strongly recommend following the Step-By-Step below if you’re experiencing communication issues that aren’t resolved by the traditional power-cycling/reboots.
Odd Behavior:
We have a house with 8 Schlage Smart Deadbolts, and various other z-wave and wi-fi devices.
All 8 Schlage Locks went offline at once and would NOT come back online. Upon power-cycling the Locks, they would come online, but wouldn’t respond consistently to commands and were very sluggish (at best).
Tried the traditional fixes… like in this order:
- Pull Batteries from Schlage Locks
- Power-Cycle Wi-Fi Modem/Router
- Power-cycle SmartThings Hub (including internal v2 Hub Internal Batteries)
- Z-Wave Network Repair
Z-wave Light Switches seemed to work OK, but were a bit sluggish.
It occurred to me that even though we were power-cycling the various key components, there was still an extensive Z-Wave Mesh Network which remained active throughout the home across 42± Light Switches which were never reset.
With that in mind, we proceeded to perform a Whole-House Power-Cycle (Reboot)! Turned Off the Main Electric Circuit Breaker (killing power to ALL AC-Powered Z-Wave Devices that weren’t on battery backup). Unplugged some Z-Wave Device with Battery Backups. Waited 2 minutes. Restored Power. BAM! Almost instantly, all 8 Schlage Locks came back online and were VERY responsive!
First: If you only have a handful of constant-power Z-Wave devices or you know which specific circuits ALL of your constant-power Z-Wave devices are on, there is no need to do a whole-house reboot! But it’s important that you know, or can identify, every Z-Wave device in your house. If you only have a handful, pretty straight forward. If you have like 50+, it’s easy to forget this light switch, that sensor, that Z-Wave Repeater you plugged in 2 years ago behind the couch the water shutoff, etc. It could be that “one” Z-Wave device that’s creating the bottleneck.
Here’s the LIMITED Step-By-Step Reboot in Cases Where You HAVE Identified EVERY AC-Powered Z-Wave Device in Your Home:
- Start by powering down your SmartThings Hub(s).
- If you have any electronic devices on those circuits (A/V Equipment, Computers, Appliances, etc), be sure to gracefully power those down first!
- Then slowly turn off only those circuits with Z-Wave devices on them, one at a time.
- Wait say 3 minutes.
- Power on your Hub(s) and wait to fully initialize.
- Then slowly power on the circuit breakers one at a time.
Here’s the COMPLETE Step-By-Step for a Truly Therapeutic Whole-House SmartThings Reboot:
- Unplug Power from SmartThings Hub (note v2 Hubs have internal batteries which need to be removed)
- Unplug Power from Wi-Fi/Modem/Routers
- Unplug any SmartDevices from Battery Backups
- “Gracefully” Power Down any Computers, Printers, Appliances, or Other Electrical Devices that you have ready access to and/or feel may be susceptible/sensitive to Power Outages.
- Note: Battery-Powered Z-Wave Devices do NOT act as repeaters so are not part of the Mesh Network per say, so we did NOT remove batteries from 24± Z-Wave Devices. But as @JDRoberts points out here, a Battery-Powered device could also create Network Issues. If you have a lot of Battery-Powered Devices, perhaps try this step-by-step first by power-cycling all of the AC-Powered devices to see if it solves your problem. Then consider a Round #2 by also pulling batteries from all of your Battery-Powered devices. Of course, if you only have a handful of Battery-Powered devices, go ahead and pull them in Round #1. We just weren’t keen on going around pulling 24+ batteries and in our case, the AC-Power Cycle did the trick
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- At the Circuit Panel, begin by slowly turning OFF each of the individual breakers, alternating between a Left Side Breaker, then a Right Side Breaker, then a Left Side Breaker, etc. until they are ALL in the OFF position.
- Turn OFF Main Breaker at Circuit Panel
- Wait 3 Minutes (up to 5 minutes perhaps)
- Slowly begin turning ON the individual breakers one at a time, alternating from a Left Side Breaker to a Right Side Breaker, then a Left Side Breaker, etc.
- Turn ON Main Breaker at Circuit Panel
- Power On Wi-Fi/Modem/Routers
- Power On SmartThings Hub
- Test your Z-Wave Devices
- If they are all working, power on your various Computers, Appliances, etc. that you had previously turned off.