Price sign not responding, Display may be distorted, Power cycle

Potential Symptoms

  • Key Fob is not communicating with display.
  • Display may only have decimal lit or be blank.
  • Garbled display.
  • Unable to change price on one or more displays.
  • DS1 diagnostics LED on the driver may be off or solid on, (normal behavior DS1 should blink when communication is detected). 
  • DS4 diagnostics LED on the driver may be off or solid on, (normal behavior DS4 should blink once per second when status is OK). 
  • One price panel might show a different price then another of same grade of gas.


  • Product Family: Digit and Price Displays
  • Product: Fuelight, DataMaster, FL-2000, FL-2100, FL-2109, FL-2300, FL-4000, DF-2000, DF-2009, DF-2100, DF-2109, DF-2300, DF-4000, FL-3000, FL-4500, Gas, Petroleum, or Fuel Price Display, FL or DF digit product
  • Component: Digit driver
  • Control System: FLR3-100 Key Fob, FLR-100 Key Fob, FLR-1500, FLXR3, DM-100


  • The driver has locked up.


KB ID: DD1986156

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