led floodlights flashing

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greg furey

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hi all, I recently replaced two floodlight bulbs with led replacements . upon turning on the bulbs they are flashing quite rapidly. the motion sensor is a dimmable one. tried changing the settings on the sensor no luck. replacing with original bulbs works fine.i was thinking it was that the dimmable motion sensor is not compatabile with the led floodlights ? any suggestions would be appreciated. there is not any reflections from surrounding surfaces to cause repeated triggering of the motion sensor. anyone else run in to this type of problem ? thanks
 
iwire said:
Are the LED floodlights designed for dimming?
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I will check that first when I return to the job, if they are dimmable bulbs do u have a suggestion where to start? bypass the motion I guess would be first , have to bring a replacement motion detector with me ., check existing settings on the motion, thanks
 
Matching LED bulbs & dimmers has been quite a challenge. Many bulb manufacturers have a list of what dimmers will (or will not) work with their products. That's something you can check before heading back out to the site.
 
Even if he found the site that lists dimmer models compatible with LED bulbs I haven't seen them list dimming motion light models.

I would bank on one of two things
A) the OP did not use dimmable LED flood bulbs
or
B) some LED model lamps respond to dimming circuits in this fashion depending on the number of lamps installed, just changing brands can correct the problem.
 
mopowr steve said:
Even if he found the site that lists dimmer models compatible with LED bulbs I haven't seen them list dimming motion light models.

I would bank on one of two things
A) the OP did not use dimmable LED flood bulbs
or
B) some LED model lamps respond to dimming circuits in this fashion depending on the number of lamps installed, just changing brands can correct the problem.
Click to expand...

Motion should be moot. It's just an on/ off with a timer to delay the off.
 
greg furey said:
hi all, I recently replaced two floodlight bulbs with led replacements . upon turning on the bulbs they are flashing quite rapidly. the motion sensor is a dimmable one.
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"upon turning on..."

so, it's not in dimming mode when they are flashing.

i'm betting the dimmer doesn't have enough of a
load on it to work correctly, and is spazzing out.
 
Fulthrotl said:
"upon turning on..."

so, it's not in dimming mode when they are flashing.

i'm betting the dimmer doesn't have enough of a
load on it to work correctly, and is spazzing out.
Click to expand...

Some of these (like mine) have a 'soft start' feature that gradually brings the lamps to full brightness. Supposedly to increase lamp life, but it looks kind of cool, too.
 
K8MHZ said:
Some of these (like mine) have a 'soft start' feature that gradually brings the lamps to full brightness. Supposedly to increase lamp life, but it looks kind of cool, too.
Click to expand...

The commercial LEDs I install will do that when power is applied.
 
mgookin said:
Motion should be moot. It's just an on/ off with a timer to delay the off.
Click to expand...

I was referring to the motion light like what the OP was using, whether it be the dual bright model (1/2 brightness until motion is detected then goes to full brightness) or the graduated light intensity type (from 0 to 100%) and how that works with LED lamps. Probably not so well if the lamps are not dimmable.:cool:
 
mopowr steve said:
I was referring to the motion light like what the OP was using, whether it be the dual bright model (1/2 brightness until motion is detected then goes to full brightness) or the graduated light intensity type (from 0 to 100%) and how that works with LED lamps. Probably not so well if the lamps are not dimmable.:cool:
Click to expand...

Makes sense.
Thank you.
 
K8MHZ said:
I think it's a good feature. Not just for making stuff last longer, I also mean I prefer the ambiance of a soft start prox light over one that comes on in an instant changing dark to bright faster than the eye can compensate.
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I agree.
 
lights flashing

lights flashing

yes unfortunately I bought the led bubs at the orange store, I will try another brand from the supply house this week thanks for all your help
 
greg furey said:
yes unfortunately I bought the led bubs at the orange store, I will try another brand from the supply house this week thanks for all your help
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I asked because I got 8 sensor lights from them recently and purchased led floods because everything was on sale. The lamps are fine, it was the fixtures. Some were fine and some flashed when the switch came on. But they were all from the same shelf and the boxes were identical. Except the boxes were not identical. The tiny printed catalog numbers were different on the non flashing lights than the flashing ones. But all mixed together at the shelfs cause the boxes looked identical. One clearly stated inside on the direction book not for use with led lamps, but hey who reads the books.
 
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