Door Operator Flickers On and Off

If your PULSE 500 Series door operator flickers on and off, follow these steps:
  • Ensure that the V+, GM, GS, and COM cables are correctly connected in the junction box and control board.
  • Also make sure that V+, GM, and GS are approximately +24V DC when measured against COM.
  • Additionally, disconnect all peripheral devices such as photo-eyes, activators, door locks, or interlocks, as they could be shorting the control board.
  • If none of these steps work, please contact technical support for further assistance.

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