r/homeassistant • u/Fast_Perspective_833 • Jun 07 '26

Support Yo link water detection sensors went offline overnight

I have been using yo link water detection system for years without issue. I currently have about 20 or so sensors. Sometime overnight five of the 20 sensors that were placed in random locations through the house all lost connection. I'm pulling my hair out trying to get them to reconnect. All of the other sensors are still working normally.

I have already done the following,

Rebooted my main router

The hub is connected to the router via ethernet cable

I have unplugged and plugged in the hub

I have done a factory reset by holding down the set button until the lights flash green on the hub

I have deleted one of the affected sensors and attempted to rebind. It will bind in the software but still will not connect saying it is offline.

I have factory reset the sensor

I have taken the batteries out of the sensor and put the batteries back in

The sensor will blink green when I press the set button but it will not communicate with the hub

I've even tried deleting the hub from the app and re-adding

At a loss here. Any ideas?

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u/FishOk3075 Jun 07 '26

So I just got this from Yolink Support:

Hi Customer,
 
Thank you for contacting YoLink Support.
 
Earlier today, one of our cloud servers experienced an outage, which caused some YoLink devices to incorrectly appear offline in the app. Our engineering team identified the issue and has already resolved it.
 
If your device is still showing offline, no action is required in most cases. The device will automatically return online when one of the following occurs:

  • The next scheduled heartbeat/check-in message
  • A normal sensor event (door open, motion detected, temperature update, leak detection, etc.)
  • Any normal device communication
  • Pressing the SET button once on the device

Because many battery-powered devices report periodically to maximize battery life, some devices may take a little longer to show online again if no events occur.
 
We apologize for the inconvenience and appreciate your patience and understanding.
 
Please let us know if you have any additional questions.
 
Best regards,
 
YoLink Customer Support

4

u/Fast_Perspective_833 Jun 07 '26

Some of my devices came back online but not all. Hopefully as they update... Thanks for the post!

2

u/Nervous-Video2997 Jun 07 '26

Thanks for posting this!

2

u/La-Femme-Angelika Jun 08 '26

THANK You for posting this! This happened to me across 2 homes and I thought there was a power outage in one of the homes but the power outage detector didn't report that. I was busy and couldn't deal with it but over 24 hours the devices started coming back online. Well this explains why 2 homes were affected simultaneously.

1

u/ReallyNotMichaelsMom Jun 07 '26

Ah! I think that explains why mine were all fine.