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Thread: MA-600-WH and Commercial Electric LED Flash

  1. #1
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    Question MA-600-WH and Commercial Electric LED Flash

    During a remodel our contractor put in MA-600-WH dimmers and CE spots. I have attached the picture I took of the CE light box.

    There are six of these lights on the kitchen circuit controlled by the MA-600-WH and they work correctly.

    Each bath has a single CE light and they "flash" when turned on. Tap the switch, light comes on briefly, goes off, then comes up to full brightness.

    Is there a fix for this or am I looking at buying a different switch?
    Attached Thumbnails Attached Thumbnails Commercial light fixture.jpg  

  2. #2
    Senior Member
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    The MA-600 is not a good choice for any LED. A single LED is well below the minimum load spec.

    I'd replace both dimmers with MACL-153.
    LED, Incorporated
    Raleigh, NC 27614

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  4. #3
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    Thank you. I see more than one model #

    MACL-153MLH and MACL-153MR

    Does it matter which one I use?

  5. #4
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    The base dimmer is the same. The "R" usually means there is a remote/companion dimmer in the package. If your lights are controlled from a 2nd location, you would need a remote.

    H usually means clamshell packaging. The stuff you need a chainsaw to open.
    LED, Incorporated
    Raleigh, NC 27614

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  7. #5
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    My apologies. I should have looked first instead of relying on records from the remodel. The switch in the hall bath (and I'll wager the master) is MACL-153M.

    Is the one in the picture different from what you recommend? If not is there anything I can do to stop the "flash"?
    Attached Thumbnails Attached Thumbnails Lutron switch bathrooms MACL-153M.jpg  

  8. #6
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    MACL-153 is the base model number. Adders (like MACL-153H) refer to packaging.

    That is a good dimmer for retro type LEDS (like you have)>
    LED, Incorporated
    Raleigh, NC 27614

  9. #7
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    Thanks for your help. We are considering removing the switches and looking for a different brand since there is no Lutron solution. An expensive mistake on our part.

    I do appreciate your help.

  10. #8
    Authorized Lutron Contributor
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    Hello NoviceGuy,

    Thank you for your post!

    The MACL-153M is rated for LEDs. However, at this time there is no industry standard for LEDs. Because they are all made differently, they will all react differently to the dimming signals that dimmers create.

    The flash on you are experiencing is due to the initial inrush your LEDs generate with the dimming cycle overwhelming the LEDs. Think of it kind of like turning on cold fluorescent tubes on a mechanical switch and the flicker and even buzz when they first turn on.

    There is a way we might be able to solve your issue. The MACL-153M has a fade on time, by increasing this time you reduce the initial inrush current. This could eliminate the flash on altogether.

    Below is a link to the advanced programming guide of the MACL-153M, page 7 is the fade on time.

    http://www.lutron.com/TechnicalDocum...ary/048459.pdf

    Try the 3 second adjustment to see if that alleviates the issue and increase if necessary.

    Hope this helps!

    Julia K.

  11. #9
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    Thank you for your help. It worked!! Now we have to get used to no blink when we use them, lol.

    You can't imagine how much we appreciate this. It's nice to know there is someone that can help. You are obviously very knowledgeable.

  12. #10
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    Well yes. And no.

    If I wait a while that the length of which not determined the light flashes when I turn it on. If I then turn it off and back on it does not flash. Wait a while and it flashes.

    I will increase one step at a time and test.

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