2GiG thermostat stops reporting humidity

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1

I installed a 2GiG stat a couple of months ago as a Generic Z-wave Plus Thermostat. I used this stat because I wanted on-board control of an external dehumidifier. It was working well since installation with some pretty simple Rule Machine apps. These were mostly written because the driver doesn't let me push any dehumidifier control information to the stat.

Today, though, I realized that Hubitat is no longer seeing humidity changes. It sees changes in temp just fine, but humidity is ignored. If I go to the device and refresh it, everything is updated correctly (well, only the humidity changes, all other values are already correct). So, everything is talking.

I've rebooted the Hubitat with no joy. Same thing is happening. I'm not sure what's going on, especially since this has been working fine for the last month or so.

Any ideas? TIA.

2

Did you try rebooting the thermostat? If the issue is with it not sending the data, that might help.

3

Thanks for that. Restarting the stat seemed to fix the problem. Weirdly, humidity was the only thing not being reported. I'm not sure why that would get fixed by a restart. Do you know if this is common behavior? This stat is in a vacation home that goes months without anyone around. I won't be able to power cycle it if this continues to happen.

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4

How is the thermostat powered? Batteries or 24VAC? If it is the latter, it should be very simple to put R or C on a controlled relay to reboot the t-tstat as needed.

Also, I've had that thermostat in a previous house. It was powered by 24VAC, and I never encountered the issue you've described.

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5

I suspected that the device had an issue - that happens sometimes, but no idea what causes it… probably a rare and random firmware bug.

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6

24VAC. Let's hope I have your same experience moving forward :slight_smile:

Thanks!

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7

Thanks so much. Exceptionally rare would be nice :slight_smile:

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8

I also hope it doesn't recur. However, as a backup, you can consider using a dry contact relay like this one between the furnace control board and the thermostat to power-cycle the thermostat.

  1. It can be powered by R & C from the control board.
  2. Connect R from the Thermostat to NC.
  3. Connect R from the control board to C.

When the thermostat misbehaves, just turn the relay on and off.

https://www.amazon.com/MHCOZY-Adjustable-Selflock-Momentary-SmartThings/dp/B08X218VMR/

If your devices are mostly z-wave (or if you want to avoid zigbee), you can consider using a Zooz Zen16 or Zen17. Those relays can be powered by 24VAC like the eWelink zigbee relay that I linked to.

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