I have a Lutron DV-600P dimmer (single pole, controlling a chandelier with 4x 40W incandescent light bulbs). They flicker constantly. The bulbs and dimmer are not defective (tested replacements).

UPDATE: I just tested a NON-dimmer switch and the lights STILL flicker

The wiring is really strange on this.

black from dimmer <-> red from house
black from dimmer <-> blue from fan <-> blue from house from bottom <-> blue from house from top
black from fan <-> yellow from house

After some trial and error it doesn't seem like the blue wire from the bottom does anything. If I disconnect that one completely, everything still turns on (lights still flicker of course).

Please help me get these lights to stop flickering. Ideally I'd like to keep them on the dimmer but I'm fine with using a regular switch if necessary.


Fig 1. Wiring diagram

enter image description here

Fig 2. Bottom

enter image description here

Fig 3. Top

  • 1
    Can you edit in a photo of the top rear of the junction box? This looks like it could be a conduit job... – ThreePhaseEel Dec 18 '16 at 3:52
  • I think @ThreePhaseEel is right on the money, which explains why coloring might be different. Also what country are you in? For what it's worth, wire color doesn't cause incandescent bulbs to flicker. What I suspect you have is a bad dimmer. – Tyson Dec 18 '16 at 4:06
  • @ThreePhaseEel added I think – ferret Dec 18 '16 at 6:50
  • @Tyson added the photo. I don't think the dimmer is bad though because I bought another one (same model) and it still flickers. United States – ferret Dec 18 '16 at 6:50
  • Can you pull the other switch out and get us more photos? Confirming that this is a conduit job btw... – ThreePhaseEel Dec 18 '16 at 17:44

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