Return to the Lighting Forum | Post a Follow-Up

 o
My Philips Ew Profile LED's are humming!

Posted by corgimum (My Page) on
Mon, Feb 4, 13 at 12:21

DH installed them this weekend and they all hum! Any idea why? I can post a diagram of how he set it up if that helps diagnose the problem.


Follow-Up Postings:

 o
RE: My Philips Ew Profile LED's are humming!

Are you using a dimmer with them? What is the make and model of the dimmer?


 o
RE: My Philips Ew Profile LED's are humming!

Yes, the Lutron Skylark Model #CTCL-153PDH-LA. This is the same dimmer we are using for our recessed LED lighting and have no hum there.

Here is a link that might be useful: Lutron dimmer


 o
RE: My Philips Ew Profile LED's are humming!

The humming is almost certainly caused by the dimmer; you could try changing it out for a regular switch to confirm it.

It's a bit hard to tell, but Lutron's support materials and a review on the Home Depot site appear to suggest that this dimmer is not compatible with ELV transformer loads. The eW Profile strips require a reverse-phase ELV dimmer; Philips does not list suggested dimmers.

The Home Depot review suggests calling Lutron Technical Support at 800-523-9466. I don't have a dimmer on mine, but other members may be able to list dimmers that have worked for them.

See page 100 of the Lutron spec guide PDF linked below; you'll see that while the Skylark dimmer is listed as working with ELV loads, the Skylark Contour is not.

http://www.homedepot.com/buy/lutron-skylark-contour-150-watt-single-pole-3-way-cfl-led-dimmer---white-ctcl-153pdh-wh.html#.URAc5og2tE4

I also found a compatibility chart from Lutron for the eW Profile Powercore strips at http://www.lutron.com/en-US/ResourceLibrary/LEDReportCard/LED_120V eW Profile-41 Report Card.pdf

This also lists the Skylark SELV-300P dimmer, but not the Skylark Contour dimmer.

Here is a link that might be useful: Lutron dimmer spec guide


 o
RE: My Philips Ew Profile LED's are humming!

Wow- that is very helpful. Thanks! I guess that was a detail we neglected to research. We will try changing out the switch and then decide whether to get the Skylark or forget about dimming. I will call Lutron to confirm that it will work.


 o
RE: My Philips Ew Profile LED's are humming!

The dimmer has to be an ELV dimmer.


 o
RE: My Philips Ew Profile LED's are humming!

There are numerouse ways to dessign the AC to DC power suplies for low voltage devices.

Some of the designs are easily adapted to 'standard' (TRIAC) dimmers, others require some of the other dimmer types available.

You have to ask each manufacturer what dimmer type they recommend, since they often have different power supply designs.

Even power supply size (watts) can affect the type of dimmer it was designed to operate with.


 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 Lighting 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