Unable to change prices unless FLR-100/FLR3-100 is close to the antenna; bad ballast

Potential Symptoms

  • Unable to update prices or get into addressing mode unless right next to the antenna.
  • May be able to sync the remote from the ground, but no other functions work. 


  • Product Family: Digit and Price Displays
  • Product: FL-2000, FL-2100, FL-2300, FL-4000, DF-2000, DF-2100, DF-2300, DF-4000, FL-3000, FL-4500, Gas Price or Petroleum Price Display, FL or DF digit product
  • Component: Back Lit add/name panel lighting on sign structure
  • Control System: FLR-100/FLR3-100 Key Fob (Wireless Communication Option), Handheld, Remote


  • Bad ballast is causing interference.


  • Replace any lighting or failing ballast within the sign structure.

For Temporary Operation

  • Disconnect power to the fluorescent displays.

KB ID: DD2181063

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