DM-100 doesn't power up when connected to outdoor J-Box, Polarity reversed

Potential Symptoms

  • DM-100 wont power up when connected to the outdoor J-box.


  • Product Family: Digit and Price Displays
  • Product: Time and Temp display
  • Component: DF-1012
  • Control System: DM-100


  • Polarity is reversed on pins 1 and 5 on the J-Box


  • Swap the red and black wires on pins 1 and 5 on the back of the J-Box

DM_100 Wiring on Time and Temp display.png

For Temporary Operation

  • If a wall pack transformer is available and an outlet is close enough to plug it into,  you can power the DM-100 with that and see if you can communicate to the display. 

KB ID: DD4268407

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