We are releasing a new firmware update (3.04) for the VZM31-SN that includes an improved dimming algorithm designed to resolve the flickering issues some users were experiencing. For most setups, this update should provide a noticeably smoother and more stable dimming experience.
However, we want to call out an important advisory for users running the switch in a non-neutral configuration.
What to Expect
After updating, some non-neutral users may notice erratic behavior at higher dimming levels (for example, instability or unexpected behavior near the top of the dimming range). This is a known side effect of the improved dimming algorithm that fixes the flicker issue.
Recommended Solutions
If you encounter this behavior, there are two recommended options:
Lower the Maximum Level
Reducing the Maximum Level setting can stabilize operation and eliminate the issue while still maintaining smooth dimming. Start at the highest level and go down in increments to see at which level the problem is resolved.Install a Dimmer Bypass
Adding a dimmer bypass can provide additional load stability in non-neutral setups and is a more permanent solution if you want to retain higher maximum output levels.
Why This Happens
Non-neutral installations rely on load characteristics to power the switch. The updated dimming algorithm optimizes performance and flicker reduction, but in certain wiring/load combinations, this can require either a lower maximum output or additional load support via a bypass.
As always, we appreciate the community feedback that helps us continue improving our firmware. If you have questions or need help dialing in your settings, feel free to comment below—we’re happy to help.