I am trying to Install HS210 into a 3-way light switch for house lights (not LED) with no dimmer. Once I get through the setup, I can control the switch successfully (in app and can hear click on switch), but the light comes on for a brief second and then turns off.
I’ve attached a photo of the wires going into my two existing light switches that have different colors. The playroom has grey, black & red (with a white wire in the box but not connected). The dining room has black, white and red. Both have ground wires not attached.
I tried to to find a solution in the community posts but only seem to find others having the issue without a reply of how it was fixed. I’ve tried lots of different wiring but none resolved it. Please help!
Hopefully this can be the post where others can find an answer.