Hey, I’m having some issues with Sonoff switches becoming unavailable in homeassistant intermittently. They do however come back online if the switch button is manually pressed. Or if the switch is activated via ewelink.
This issue appears to be specific to each button on the device. For example a doubble switch can have switch A available while B is unavailable, and the switch doesnt go offline in ewelink. This leads me to beleve this isnt a network connectivity issue.
They are all M5-1C-86W & M5-2C-86W wifi switches. For refrence i have 89 of them total so unsure if im hitting some kind of limitation in the free version of the API or is this is a know issue.
I did find a known issue that sounds similar, so just wondering if I am experiencing said issue or if not what are the next steps to diagnosing whats happening?
Same here. If have two Sonoff Basic R2 switched that I use for powering my 3D printer and the Octoprint controller. I already had a few 3D prints ***-up because one of the Sonoff switches decided to switch of the printer or controller, while printing.
I’ve improved wifi coverage in that area, but still the problem is there. I did a test:
March 10, 2025
BASICR202 - Printer Power turned on triggered by action Switch: Turn on
06:29:32 - Last week - Guido
March 12, 2025
BASICR202 - Printer Power became unavailable
08:13:58 - 4 days ago
BASICR202 - Printer Power turned off
08:27:25 - 4 days ago
The switch was on for 2 days, then it became unavailable, and a few miutes later it’s switched off (I guess it became available at that point).
I have now allocated all the switches static IP’s by using Bind IP to MAC in my router. I did this just to rule out any low level networking issues such as wifi signal or IP address conflicts.
I can sucessfully ping the devices that are offline in HA and as mentioned above, the device remains online in ewelink. The device also comes straight back online in HA if toggled on or off using ewelink.
So to conclude im certain this isnt a local network issue.
No WRT it’s all Draytek kit and the site has a large number of access points. There is already an SSID separate from the main network for IOT.
What’s the significance of your particular network settings?
Wpa 2-PSK
Channel 6
20mhz
Wmm mode disabled
Again, I just can’t see this being a network issue simply because I wouldn’t be able to remotely operate the switch with the ewilink app which immediately brings it online in HA. The switch also pings without issue. But hey I’m open to trying anything at this point…
Similar issue that I am having - I have a POWR3, 4 BasicR4’s and 3 4CHPRO3’s. All are running through a Deco P9 mesh system (with decent signal strength) and about 24 clients on the mesh at any time. My system is used to control the central heating and hot water via Home Assistant and, electrically, it’s fine, but it’s really frustrating to discover that these Sonoff units are randomly becoming unavailable (even though they can be seen by eWeLink) and will come back on line if powered off.
I guess my next step is to connect them all to a different router and hope that HA can still see them.
Certainly, as they are, it all seems like a pretty expensive waste of money!
