Why would a door sensor just start working again out of the blue?

EDIT: I just realized it isn't working again. Could it be that I had a bunch of aluminum patio furniture stacked up in the garage, which I got rid of yesterday, and it was somehow acting as an antenna?

If there's a "general discussion" section I couldn't find it. I don't need help, I just have a question.

I have an Aeotec sensor on my garage door and a rule in Hubitat that sends open/closed notifications to my phone.

When I first installed the sensor it worked but over time it was unreliable. I fussed with it and was never really able to get it to be reliable. I figured it was the metal of the door, the distance to the hub or whatever and gave up on it.

It has been many months since I got the open/close notification. Then a few days ago out of the blue it just started working again.

I'm curious if anyone has any ideas what changed? Could it have been a problem with Hubitat cloud?

Temperature swings can pretty easily mess with the gap distance, and it doesn't take much either way to induce inconsistent results -- could that be a possibility here?

Cloud? No cloud.

Maybe something with the z-wave mesh "clicked" and it found a route to the mothership. Maybe you added a new plug, maybe not. Who knows.

Maybe you can look at the logs of a few days ago, and see if you did something. Maybe restarted the hub, stuff like that?

It's possible. Do you think having a bunch of aluminum patio furniture in the garage could be why it started working? I got rid of that stuff yesterday and now it's not working again

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If that furniture was blocking line-of-sight coverage, then that definitely could've been interfering with the signal.

Wow. I know mine is affected by vegetation and rain, in a bad way, but that's outside.

I don't recall anyone posting about something like this, that got it working. :slight_smile:

I might try the same because the ZEN tilt sensors are unreliable like yours. Ecolinks have been fine. Now all I have to do is go to the dump and find some old lawn furniture.

Actually it was when the furniture was there that it started working, and after removing the furniture it stopped working.

Have you confirmed the device is not recording events that you know happened? E g. By looking in the device events page. Basically, what are you basing your concern about the sensor on, the notification not arriving or events logged (or not) to HE?

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It's enhancing it, lol.

I don't even remember, it was a while ago, but generally yes I know how to troubleshoot.

@hydro311 may have been correct here about the contact distance. It was warmer for the past week and a little cooler today. Or maybe I bumped it and that's when it started working. I just went out and peeled it off the double sided tape then put it back on so it's nearly making physical contact with the magnet and now it's working again.

I wonder if the garage door itself has some play and isn't always seated in the exact same place. I'll have to keep an eye on it.

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My Zigbee one reports temperature as well, so you can get a sense of it being connected by the temperature changes. Does yours do this? Or just the contact?

Also, is it battery powered? If so, could it need replacing?

Battery seems to be fine. After adjusting it so it's making slight physical contact with the magnet it seems to be working again.

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That's good. Only other thing I can think of would be the mesh, like was mentioned earlier. Hopefully it's back to normal now.

Contact sensor?
Get a tilt sensor.

My garage is detached and unconditioned, and it sees seasonal temp swings from 100+ down to -20F. After I set up my reed sensors, I noticed the one on the vertical rail could get a false open during strong wind gusts against the door, so it took a bit of trial-&-error to nail down that sensor's positioning to accomodate both gust-related and temp-related movements/shifts. But it's now been solid out there for years since.

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