Homey Community Forum

For all the Ikea Tradfri Gateway users with the unknown_error problem

There are some people that are having problems with the Ikea Tradfri Gateway app and hub that suddenly, out of nothing, the lights can’t be controlled anymore and the message is ‘unknown_error’ when changing a light.

The only solution seems to be rebooting the app or the Homey itself.

I think i may have found a cause for this problem, it looks like something like a sleep or so.

I made the following flow and now the lights are working for 1 week straight, where normally i have to reboot the app multiple times per day.

If: every 15 minutes
Then: toggle (a random) ikea bulb on or off

This does turn off and on the bulb (in my case in the kitchen, every 15 minutes and seems to keep the connection alive(?)… idk, but it helps for me!


I was having this problem for a while now. What I just don’t understand is why some haven some don’t have this problem. I now have quit using it and added all bulbs to my hue bridge.

On a side note, hopefully the app gets updated some time to also support the blinds.

I suspect Homey’s less than stellar (wireless) networking to (at least partially) cause this issue.