White Series 2-1 Dimmer + Aux (Aux is behaving oddly)

I wired up a white series where i used to have a dimmer and then put in the aux switch to replace the dumb switch on the other side of the room (3-way). The lights are two 20 watt integrated LED ceiling lights: https://www.homedepot.com/p/Home-Decorators-Collection-13-80-in-Black-LED-Flush-Mount-20747-007/320491632

Currently the White 2-1 is working great and mostly as expected (the lights don’t dim fully… they go to what I would call about 1/2 brightness compared to previous dimmer, but no lower) - everything else works fine physically and in home assistant; though I have noticed this switch isn’t requesting a firmware update where my other switches have (it’s on Firmware: 1.0.0, my others are on 1.0.5

I ran some tests and here is what happens (bold is things that are odd, italics for things that are expected at least from my perspective):

When the dimmer is set to between 85-100% the Aux switch:
- on down press - nothing

  • on up press - nothing (when lights on) - turns on (when lights off)
    - on config press - lights turn off
    - holding up will increase brightness to 91-92% (then stops)
    - holding down will increase brightness to 100%

When the dimmer is set to between 1-85% the Aux switch:
- on down press - turn off
- on up press - nothing (when lights on) - turns on (when lights off)
- config - does nothing (as expected and it registers in home assistant)
- holding up - increases brightness (up to 91-92%)
- holding down - decreases brightness

Settings on my switch:

  • Dimming Edge: Trailing
  • Relay Click: Disable
  • Smart Bulb: Disable
  • Switch Mode: Dimmer + Aux

I don’t currently have a bypass installed - i have a feeling that “might” be the issue, but there is a ~40 watt load, so i thought it should be ok but i can order one if that is potentially a fix. Wiring is non-neutral.

Does anyone have any advice or thoughts I’ve seen some posts about the dimming issues which is what got me to test the dimming at different levels (everything basically works fine at 84% or less)

So I answered my own question. Installed a Bypass and it works perfectly now

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