There are two versions of the ZEN30 Double Switch - and they each use a different LED driver!
If your lights are flickering after installing your ZEN30, there may be a driver compatibility issue between the dimmer and bulbs in your installation. The first things to check are if your bulbs call for a specific dimmer and which version of the ZEN30 Double Switch you have:
- Version 1.0 which uses MOSFET ( trailing edge driver )
- Version 2.0 / 3.0 which uses TRIAC ( leading edge driver )
Version 1.0 (MOSFET)
If your LED bulb uses a leading edge driver, this could cause your lights to flicker when turning on/off or dimming since Ver1.0 of the ZEN30 uses a trailing edge driver.
To help reduce or eliminate the flickering, we'd recommend either adding a bypass to the load or trying a ZEN22/ZEN72 dimmer since these models use TRIAC (leading edge). Alternatively, you could also try Version 2.0 of the ZEN30 Double Switch since it also uses TRIAC.
Version 2.0 / 3.0 (TRIAC)
If the LED bulbs in your installation use a trailing edge driver, this may lead to flickering since the ZEN30 Ver2.0 / 3.0 uses a leading edge driver.
The solution in this case is to either add a bypass to the load, as mentioned above.
Here is how to wire the bypass with your ZEN30 Dimmer:
- Turn the power off at the breaker before removing the switch from the box and/or handling any wires.
- Connect one wire from the bypass to the Dimmer Load connection on the ZEN30 - it will also be connected to the load wire going to the light.
- Connect the other wire from the bypass to the Neutral bundle where you'll already have the neutral from the light, neutral from the power line, as well as the neutral pigtail from the ZEN30 connected together.
- Follow the appropriate ZEN30 Double Switch wiring diagram for all other connections to the switch.
- Once you connect your switch, secure it in the box, making sure any bare wires and screws are isolated with electrical tape. After the switch is settled back in the box and the wall plate is re-installed, you can turn the power on and test the dimmer again to see if the flickering issue has been resolved.
Important to Note for Both Versions
- Check if the LED bulbs you're using are labeled as dimmable. Regular on/off bulbs are not compatible with dimmers and will not perform correctly.
- Never use a Z-Wave dimmer with smart bulbs unless you disable paddle control on them first. Dimming smart bulbs from a wall dimmer may damage your equipment.
Please let us know if you have any questions about the compatibility for your version of the ZEN30, we'll be happy to help.
