Return to the Electrical Wiring Forum | Post a Follow-Up

Help with Lutron switch wiring

Posted by just_julie (My Page) on
Fri, Sep 9, 11 at 13:36

Last week, my husband tried to turn on the bathroom vanity light and he heard a popping sound, switch doesn't work.

I thought it was a faulty switch so I ordered another one and installed it exactly like the old one was installed. I should explain the switch, it's 2 in 1 box.

The top works the 3 vanity lights and is a dimmer. The bottom switch is NOT dimmable, just a regular on/off for a ceiling light that is rarely used.

The side of the switch is labeled DIMMER, SWITCH and LIVE. I have 3 wires, Yellow, Blue and Red. The were installed Yellow to dimmer, blue to switch and red to live. The thing worked fine for 14 months and was installed by a licensed electrician. I have no idea what the problem is, why the new switch doesn't work either. There doesn't seem to be anything else in the room that doesn't work.. will double check the GFCI outlets now.

Any input appreciated!

Follow-Up Postings:


all other light switches and outlets work.. in the bathroom and every room on the 2nd floor!

Could the issue be with the ceiling light, causing no power to get down to the switch? Grasping for straws, here... maybe replacement switch is bad too?

Forgot to add above that there are little indicator lights on the side of the switches, none of them are lit.

RE: Help with Lutron switch wiring

Depending on how old your house is, the GFCI that controls that circuit could be almost anywhere. I had a house where the bathroom circuit was controlled by a GFCI in the garage. At one point in time the code was much more lenient with GFCI usage and the devices were expensive.

Have you reset the breaker for the bathroom? Turn it fully off and then back on. Sometimes when breakers trip, they don't always give an obvious visual indication.

RE: Help with Lutron switch wiring

Hi mike. Yes, at one point I had most of the power off upstairs. I changed a ceiling fan in another bedroom after I changed the switch and because the breaker box isn't labeled clearly, I tend to go crazy turning things off.

I will turn off and on every single breaker to see if that does the trick. After reading what you said, I remembered that there is a weird breaker that controls an outlet in the kids' bathroom -and- an exterior outlet right outside the front door and I think the garage. Crazy, goofy house!

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Electrical Wiring Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here