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Home > Light Switches > ZEN30 Double Switch > Lights Flicker with My ZEN30 Double Switch
Lights Flicker with My ZEN30 Double Switch
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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, or trying a ZEN27/ZEN77 dimmer since these models use a MOSFET (trailing edge / ELV dimming).


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.


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