UK lightswitch swap from dimmer to switch help!

[slinkie172]

Hi all,

I have a dual dimmer switch in my living room for 2 ceiling lights. I am using LED light bulbs and so the dimmers don't work without the lights flickering so I wanted to change the switch to just a normal on off switch. I removed the old dimmer, wired in the new switch in the same way the other switch was wired and now I am having an issue with one light that refuses to turn off. On the picture it would be the light associated with the switch on the right. Any ideas on why this would be? The dimmer switch worked ok like this. the below is a crude paint sketch of the wiring in the back.

 

[Jurassicspark]

If you haven't got the L22 wire and the common wire mixed up then the diagram shown above looks correct.

Which LED lights do you have?
How bright is the light when turned off? A lot of the time LED's can remain lit when the switch is in the off position.

 

[robinbanks]

Buy decent LED bulbs that know how to dim; Google for Philips WarmGlow, Megaman Dim To Warm or similar LED that mimic halogen (the light they emit becomes redder as it dims, which creates warmth to the tone) - if you get basic dimmable LED they're weird: they stay the same colour but get less bright, like turning the brightness down on the TV; everything just goes kinda grey

 

[EFLImpudence]

Why do you need the link wire from COM 1 to COM2?

 

[slinkie172]

If you haven't got the L22 wire and the common wire mixed up then the diagram shown above looks correct.

Which LED lights do you have?
How bright is the light when turned off? A lot of the time LED's can remain lit when the switch is in the off position.

The light is on, not dimmed or partially on. It is 100% on.

Buy decent LED bulbs that know how to dim; Google for Philips WarmGlow, Megaman Dim To Warm or similar LED that mimic halogen (the light they emit becomes redder as it dims, which creates warmth to the tone) - if you get basic dimmable LED they're weird: they stay the same colour but get less bright, like turning the brightness down on the TV; everything just goes kinda grey

We never used dimmed lights which is why i am changing the switches rather than the bulbs. Even pre LED lights we only ever used on or off.

 

[Tricky-Dicky]

Remove the link wire, what happens now? Lights OK?

 

[slinkie172]

Remove the link wire, what happens now? Lights OK?

With the link removed the switch on the right is off completely, with it in the switch on the right is on 100%, the switch does not turn it off. I've been away this weekend so I'm going to try and get it off the wall again today to see if there's anything obviously wrong with the switch

 

[ericmark]

I will guess one of the brown wires feeds a light, the other one is feed in, so the only way is to test. Both blue and brown are line, you have no neutral, and I will guess one pair the blue is feed and brown is return, and the other pair is the other way around.

I would put all wires in a block connector so they can be tested safely. And find out which wires are line in respect to earth. What confuses me is why four wires? I will assume you have two live feeds, so in that case why link wire? But really you need some type of tester, even if just a neon screwdriver.