Luxor - LED Fixture Flashing


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The most common reason for an LED board inside a fixture to flash would be a drop in voltage.  A voltage drop in an electrical circuit normally occurs when current is passed through the wire to the fixtures.  The greater the resistance of the circuit, the higher the voltage drop. The input operating voltage at each fixture should always be between 10-15 VAC.  Fixtures with color (ZDC) LED boards operate on the voltage between 11-15 VAC. We recommend checking the following:

  • Undersize Wire (Not large enough for the length of the run).
  • Wire length. 
  • Bad or corroded splices on that circuit.
  • Proper Voltage

For more information on the LED system layout, Click Here.

Wire Size and Type

Make sure you used the correct size and wire type necessary for a low voltage system.  The most commonly used wires in these lighting systems are low voltage two-conductor 16/2, 14/2, and 12/2.  Incorrect wire size may result in voltage dropping past 10 VAC.

Wire Length

It is imperative to take voltage drop into account even when designing an LED lighting system. It would be best to verify the load (watts) and length of the run before you reference the voltage drop charts to verify the correct size wire was used for the distance.

Wire Connections

With any low voltage lighting system, waterproof connections are crucial to maximizing the life of the system. See the example of the recommended splicing option on the right. Learn More

Measuring Voltage

Insert voltmeter probes into each wire connector at the fixture (Optimum reading between 10-15 VAC for LED fixtures and 11-15 for color ZDC fixtures). For more information on using a voltmeter to troubleshoot, please visit our Checking Voltage section.​

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