LED downlights

[allan1307]

5 off ,flash for a second on switch off, straight 240 replacements. Is there a fix?

 

[malcolmsanford]

I'm sorry that is totally incomprehensable.

 

[DurhamSparky]

so your 5 lights come on and go off...!! are your fittings suitable for LED units... do they need a LED Driver... is you wiring up to scratch..!

more info mate!!

 

[allan1307]

Sorry not clear. Yep fittings etc all suitable no probs when on etc, when lights switched off (no dimmer) they flash once like a capacitor discharging. They seem to flash one at a time only once but they cascade so you get 5 very quick flashes then they are off, just wondered if anyone Knew a cure! Off out now so will log on again tonight. Thanks and hope this makes sense.

 

[malcolmsanford]

Check to see if there is a problem with an earth not connected somewhere on the circuit. It does seem as if you have a build up of a charge and if the earth was not connected it is not discharging and LEDs need very little voltage to "flash"

 

[ben1680]

I have similar issue with allan1307.
I recently replace 12v downlight (and electronic transformer) and swap it (wire it directly without the transformer, of course) to 220v LED downlight (GU10 base).
The LED downlight is constantly blinking every about 5 second, even after the switch is turned off. Is it caused by similar discharge from the nearest downlight circuit? The circuit doesn't seems to be connected to other downlight with transformer, as all 12v downlight in my home has been converted to 220v LED and doesn't have this blinking issue.
If it is caused by the residual current discharge, how come the discharge is never ending? Is there a leak somewhere? How can I solve this blinking issue? I totally lost on why this is happening.
Thank you in advance for your help.

 

[ben1680]

Just for info, the LED downlight is GU10 base, 220v type. It has built in driver inside the downlight, doing the conversion from 220v to LED voltage.
Those blinking/flashing problem only happens in 2 out of 26 total downlight that is converted to 220v LED. One location blink/flash every about 5 second, the other blink/flash every about 12 second.
Already try swapping the downlight with other that is not blinking in other location, issue still there. So it is obviously not the problem with the downlight itself.
No dimmer being used, no transformer left in the circuit in the dwelling, as all 12v downlight has been converted to 220v.
Any help will be greatly appreciated. Many thanks everyone.

 

[gaz101]

Possibly an induced voltage
Possibly the cpc is not connected in wiring
Near to these fittings


gaz

 

[ben1680]

Thank you for your answer gaz. I just check all the wiring again today, unfortunately, the wiring goes straight to the concrete ceiling that I cannot do anything about it.
Is there any other way possible to divert this induced voltage safely? Is there any device that can safely remove this induced voltage without affecting normal operation? Or there is no other way to solve this induced voltage issue?

 

[i=p/u]

look out for a dude on the forum called sinatra, not frank and he'l tell you all about a snubber for induced voltages..