Flickering LED lamps

[favemuppet]

A while ago we had some LED lamps installed in our kitchen. A couple started to flicker, not majorly, but enough to notice. Our sparky changed these and they now seem ok.

However, a couple more now have started to do the same. They have been changed about three times on the assumption that the lamps were dodgy, but they still continue to flicker. The sparky tells me he has not had a problem with any other lamps he has fitted, which to me says that this is not a problem with the lamp, but more of a wiring/connection issue. Yet he still says its dodgy lamps.

Any clues?

 

[bernardgreen]

Flickering when lit or flickering when switched OFF.

If when lit then a loose connection may be the cause, or mis match between lamps and transformer.

If flickering when OFF then read this

//www.diynot.com/forums/electrics/funny-light.294364/#2142985

 

[PrenticeBoyofDerry]

As above.
Plus do you have dimmer control, as this could be rated incorrectly.

 

[favemuppet]

Flickering when lit, and no dimmer control.

 

[RF Lighting]

Try swapping a none flickering lamp with a flickering one. This will tell you if it's the lamp or the fitting (or wiring to it) which is at fault.

 

[DetlefSchmitz]

Also are they 12Vor 230V?

 

[favemuppet]

Also are they 12Vor 230V?

They are 240V.

One now seems to be working fine, but still have one problem one remaining. It's ok 99.9% of the time, but then flickers madly for a minute or two before settling down again. The other lamps on the same "circuit" are fine. It is situated next to a vent for the extractor fan. Could this be impacting on it?

 

[Taylortwocities]

Does the fan on or off affect the flickering?

BTW.. with your figures 99.9% flickerfree operation doesn't sound too bad to me..............