Why are my LED ceiling lights continually failing?

[Peskiwabit]

I hope someone here can help me sort out why I keep blowing my ceiling lights because the company I bought the lamps from are no help what so ever, they just cost me more money!


About 4 months ago I converted my kitchen lighting from a single 100w 240v tungston bulb to four 3.3w 12v MR16 LED downlights for energy saving reasons. What a mistake it's turning out to be because 2 months ago 3 led's failed, starting with flicker until its death.

So, I contacted the company I bought them from and explained my problem, I also asked if they have had many of these led's returned faulty.

Keeping the telephone conversation short; They said that my driver was too powerful for their lamps (I didn't understand this then and still don't undurstand it now) and I would be better to use 2 of their own brand 12w drivers in place of the one 16w Aurora I was using. Also, they said they had 9 led's in total returned faulty and they sell a lot of these.


I ended up agreeing to purchase 2 of their drivers plus spare led's while I returned the faulty ones... (these ended up being lost in the post. :sigh: ).

Right, the new drivers were installed and running until a month later (yesterday) another led has failed. Today I called the company and was now told my cabling was too thick. Well after a while listening to him talking and getting me nowhere I hung up and started writing this post.


Details of what I used for the conversion:
1st conversion
Existing wiring from the ceiling rose terminated in a junction box and power to the driver from the existing light switch.
0.75mm 2 Core Flex, Current Capacity 6a from driver to led's.
4x 12v 3.3w MR16 led's connected in parallel (use constant voltage only).
1x Aurora 12v 16w DC Constant Voltage LED Driver (AU-LED16T).
Airspace above the kitchen is the roof space.

2nd conversion
Same as above except:
2x company branded 12v 12w constant voltage drivers (each driver powering 2 led's in parallel).


I hope this post isn't confusing, I'm not sure what to do other than go back to what works and apologise to the environment for trying.

 

[Marvo]

The only way you can over drive LED lamps is by supplying them with too high voltage. The Aurora driver you originally used looks like it was right for your set up and Aurora has always been a reliable make in my experience. It might just be that their lamps are useless. What make are they and did you Google them to get an idea of general opinion on their quality?

 

[mayfair]

IMO Ive bought 3 quid Leds and 20 quid ones, 240v and 12v all crap, maybe im unlucky!

 

[telectrix]

mayfair, it's not the LEDs, it's the fluctuating voltage and frequency of the supply in sunny spain. you'll just have to pedal a bit faster.

 

[mayfair]

You can go and fluctuate yourself !!!!!! m8 i can see that can be a problem with the main but surely the regulators should cope with the fluctuating mains and supply the 12v led with 12v

mayfair, it's not the LEDs, it's the fluctuating voltage and frequency of the supply in sunny spain. you'll just have to pedal a bit faster.

 

[telectrix]

yeah, i think he's bought some dodgy LEDs. having said that, i recently fitted 6 GU10 fit 3watt in our kitchen ( £8+vat each ) and 1 failed after 3 months. wholesaler exchanged no prob though.

 

[mayfair]

Thing is Tel dont know about you but, its ok these people changing things no problem but im sick a going back changing lights then going to the wholesalers. it all costs US money and no matter how nice and understanding the customer we still look a tad silly. think they need to get these Leds sorted.

 

[roukel01]

I used a few 12V ones, absolutely useless. failed in no time at all. Used Mains GU10 type LED lamps, and upto now, no problems at all.

 

[malcolmsanford]

Ahhhhhhhhhhh the good old days, no drivers, no transformers, no GU10, no M16 ...................just a quick twist and there she glows .......... and Mrs Brown knew that when it never worked you un-twist it and get one of these

 

[telectrix]

never tried the 12v ones. too much trouble fitting trannies or drivers. 240v every time. better than those cfl ( candles for lighting ) crap.

 

[telectrix]

Ahhhhhhhhhhh the good old days, no drivers, no transformers, no GU10, no M16 ...................just a quick twist and there she glows .......... and Mrs Brown knew that when it never worked you un-twist it and get one of these

light's a bit blue for my liking.

 

[Peskiwabit]

Marvo, i'm not sure of the make of these led's. They just have a company name (LustrumLight) on it followed by MR16-WW 12v 60LED. On their website it says "We import our products from an ISO9001-2008 Certificated Company".

I did some googling and got mixed opinions, some experience faulty led's, some are happy to keep sending them back for replacement, others rate them highly but I'm not sure for what reason. I'm simply fed up with the unreliability as it just costs more time and money having them replaced.

Reading all the replies, and listening to the back of my mind the general opinion seems to be that 12v led's are the problem. Surely there is a company that makes reliable ones.

But what to do now... Tungston, Halogen (I'm not much of a fan of these), 240v Led's. I've some of the 240v led's, in other rooms, which have lasted since February this year (now I've doomed them!) so I might go that route. Failing that, back to tungston.

 

[electromonkey]

I'm with you there Tel. I only use a driver and/or tranny on LED's if it's for mood lighting and then it's all top quality gear so I never have any problems.

To the OP. Can you return all the gear they've sent you and go for the GU10 option?

 

[electromonkey]

Marvo, i'm not sure of the make of these led's. They just have a company name (LustrumLight) on it followed by MR16-WW 12v 60LED. On their website it says "We import our products from an ISO9001-2008 Certificated Company".

I did some googling and got mixed opinions, some experience faulty led's, some are happy to keep sending them back for replacement, others rate them highly but I'm not sure for what reason. I'm simply fed up with the unreliability as it just costs more time and money having them replaced.

Reading all the replies, and listening to the back of my mind the general opinion seems to be that 12v led's are the problem. Surely there is a company that makes reliable ones.

But what to do now... Tungston, Halogen (I'm not much of a fan of these), 240v Led's. I've some of the 240v led's, in other rooms, which have lasted since February this year (now I've doomed them!) so I might go that route. Failing that, back to tungston.

Ideally, you're better off with British made LED's and drivers. I've installed gear that customers have bought from Germany etc and they always go ----- up.

 

[Peskiwabit]

I could try getting a refund on the lot but I don't think they will accept. Or another return gets lost in the post.

What british made led's and drivers are out there, and do you think 12v is ok british made?