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I've got a brand new single pole GE 14294 Z-Wave Plus dimmer. Before I try to connect it to z-wave, I wanted to make sure it was working. I have five LED lights (4W, 65mA, BR20 flood) lights in series. They were dimming fine on my old Leviton dimmer so I know they are OK.

Using the switch itself, the dimmer will switch the lights on and off no problem, but will not dim. BUT, if I unscrew two bulbs, then the remaining three work fine - i.e., the dimmer works correctly. If I add the 4th back in, the will dim slightly.

I've checked the current, and 3 lights are pulling about 0.2A. With four that goes up to 0.26A, with five about 0.32A. Switch is rated for 1500W and is compatible with LED.

I've tried a different 14294 and have exactly the same problem. Note that at this stage I'm just using the physical switch, so nothing to do with z-wave.

Any ideas? Bug in the firmware? Could it be the bulbs? I Called Jasco/GE and they didn't know.

  • What make and model are the bulbs? – ThreePhaseEel Dec 14 '17 at 4:21
  • What is the power factor of the bulbs? – Harper Dec 14 '17 at 8:16
  • Screw one incandescent bulb in (with 4 LED bulbs) and test. What happens? Also you probably don’t mean “in series”, if they are in fact in a series circuit fix that first. – Tyson Dec 14 '17 at 11:09
  • @Tyson - correct - my bad. Not in series. – Nick J Howe Dec 14 '17 at 14:10
  • @Harper - will measure and let you know. – Nick J Howe Dec 14 '17 at 14:11
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I’m having similar issues, and looked in page one of the manual and it says for incandescent lighting only. Not impressed!

  • Hello, and welcome to Home Improvement. Good answer, but is this the same model as the OP? Would you elaborate a bit? – Daniel Griscom Mar 7 at 11:20
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I think this has todo with minimum load. These dimmers require 50 watt min

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    Hello, and welcome to Stack Exchange. You should improve this answer because as it stands it is being flagged as low quality and is in danger of being deleted. I would suggest as a minimum if you could support the claim of the minimum load by taking a snapshot of the spec sheet for the switch that shows this data and explain what that means. – Michael Karas Nov 1 '18 at 10:06
  • And, if this is true, then why do things start going wrong when the OP adds load to a working system? – Daniel Griscom Nov 1 '18 at 14:30

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