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No Power in the Unit

If there is no power in the unit of your PULSE 500 Series door operator, follow these steps:

Check the power fuse on the junction box:

Check incoming AC voltage:

  • If the fuse is good but there are no voltages, check incoming voltage 120V/240V AC on the drive board.

Measure DC voltage:

  • If the AC power is good, then measure DC voltage across V+ and COM on the drive board.
    If there are no voltages on the drive board, then please contact technical support for further assistance.

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