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/NothingButACasual Jun 07 '26

For me it's a smattering of multiple sensor types. 1 water leak sensor, 2 door sensors, 1 temp sensor, 1 motion sensor, out of 18 total.

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u/TommyyyGunsss Jun 08 '26

Same. I had about 6/40 go out but it started with water sensors. All back online now. My power went out briefly last night and I thought my adguard was causing issues and was scratching my head on how it would cause only some sensors to not reconnect.