I have 5 LED-based recessed lights on a 3-way switch that are problematic. When I activate the circuit, I rarely get all 5 lights switching on. If I turn them off and back on again, they all work.

They don't come on or go off, whichever ones switch on, remain on. There is also no pattern to which lights come on -- anything from 1 to 5 can come on, and not necessarily in the wired sequence. I have 20+ fixtures and they're all fine, including some installed on another 3-way.

Any tips on where the fault is, or troubleshooting, or do I simply need to replace all the cabling?

  • Are any of the 3-way switches dimmers, lighted, motion sensor anything like that? – Harper Mar 9 at 19:14
  • If the lights are wired in parallel from the switch it would sound like a driver problem if they are not lighting, but since they also don't turn off it would sound like a switch problem. What type of 3 way switches are being used to controll the lights? – Ed Beal Mar 9 at 22:36

I think what everyone is suggesting is that there is something else wrong other than your cabling. If I was called to your home and you described this problem, I would not just come out and say "we need to replace the cabling". What a good service electrician would do is try and isolate the problem.

He would probably pull the switch and inspect it and put a meter on it just to make sure it was working properly. Then he would go about disconnecting all of the recessed cans inspecting each one for damage or burnouts. Once he finished disconnecting the recessed cans. He would then test all of the wiring for any problems. If it is not the wiring or the switch (which it probably isn't) and he hasn't found any defective splices or damage to the can lights, then he would begin to connect each light back up and see if he can duplicate the problem.

What a really good service electrician would do first is to call the manufacturers tech support and first find out if this has occured before and get their input.

Good luck

Your Answer

 
discard

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.