I recently replaced a physical 3-way switch in a 4-way setup with an LZW30 (black) switch. It is a “line and load in separate boxes” configuration, neutral to all locations. Prior to the upgrade, the dumb switches worked fine for years.
I replaced the 3-way on the line end with the LZW30 according to the diagram. And it works, most of the time. However, occasionally, the LZW30 gets confused. In the confused state, pressing the top (on) side of the LZW30 sets the LED to the on state (100%), but the load light does not turn on. If I then press the bottom of the paddle (off), the light turns on, but the LED turns off (10%), so the switch thinks the light should be off. Pressing off again does nothing. Pressing “on” leaves the light on, and the LED goes to 100%; then pressing off shuts off both the light and LED. Now it will work as expected for multiple on/off cycles.
If I then toggle the dumb switches, the light and LED follow along; until I try the LZW30 again, where it is (usually) confused again.
Since it mostly works, and I’ve tried all four combinations on the two dumb switches, I suspect the wiring is good, but the auto-sensing in the LZW30 is not working 100%.
The LZW30 is a refurb, updated to 1.19. I have another right next to it, driving the same type (fluorescent) light, only in a three-way.
It is currently paired to a Hubitat, but I tried un-pairing and factory resetting (hold config for 20s), and un-paired it behaves the same, so the hub is not interfering.
Reading other posts, it appears that the Red (LZW30-SN) has a parameter to force the N-Way mode to dumb switch, but I don’t see such a setting for the LZW30. Is there anyway to force the mode on the LZW30? Do I need to replace it with a Red? Would replacing the dumb switches with aux switches fix this?
Thank you in advance!