Red Series LZW30-SN and Nora Lighting LED Driver - LED lights are not reliably turning on

Product Support Hardware & Firmware Help
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Need some help troubleshooting an issue I have recently started experiencing. For background the following components are involved:

  • Hubitat C8-Pro
  • Inovelli Red Series LZW30-SN
  • Nora Lighting NATL-5060-12-HWD10 LED Driver
  • The switch above is providing 120v power to the LED Driver when the switch is turned on
  • We do not want dimming ability, just want to turn the LED driver/lights on/off

Everything was installed approximately 3 years ago and had been working without issue. Recently when turning the switch on, the LED lights behind the driver do not turn on. Typically the light switch needs to be turned off and on several times before they finally turn on. The number of times it takes is random.

What I have tried to troubleshoot the issue is:

  • Confirmed that when LZW30-SN is turned on it is supplying power for those times when the LED lights are not turning on
  • Changed the switch to a spare Red Series LZW31-SN that I have and configured the dimmer to act like a switch with a ramp rate of 0. After doing so, I see the same behavior when trying to turn on the LED lights.
  • For the times when the LED lights are not turning on, I noticed that the power draw shown in Hubitat either does not register or is very low (1-2w) for the switch. When the lights turn on normally, they are drawing ~48w

Is there anything else I can do to troubleshoot where the issue is? Is the LED Driver failing? Is one of the newer model dimmers/switches better suited to powering the LED driver? Anything else that I can try?

Thanks

2

It sounds as if the driver is failing, but here is what you can do to test.

Reinstall the LZW 30-SN. Turn the switch on and measure the voltage at the driver. Do you have 120VAC?

If you have 120VAC at the driver, temporarily rewire at the switch by moving the load conductor to the second hole on the line conductor. This will provide full-time power to the driver. Now simulate the Inovelli switch presses by throwing the breaker on and off. You’re effectively eliminating the Inovelli switch here, but still providing a switching action. This should help you identify the source of the problem.

3

Thanks for the idea…I should have thought of that.

After putting both wires in the line conductor on the switch, I was able to reproduce the symptom by flipping the break on/off. It looks like replacing the LED driver might be the next step.

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