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Centurion D3 Gate Motor Troubleshooting Guide


Quick Centurion D3 Troubleshooting Guide 

Here is a quick guide for diagnosing problems with your Centurion D3 Gate Motor

Preliminary Checks:

  1. Check the charge rate of the battery without the battery connected: 13.8V for D3 
  2. Test battery voltage under load; should be no lower than 11V DC for D3
  3. Look at the date stamp on the battery and make sure that the battery is well within its usable life of three to four years from the date on the battery.
  4. Check all visible fuses.
  5. Check DOSS and sensor connections.
  6. Push the gate open and closed manually and check that the gate is running freely and that there are no tight spots in the movement of the gate.
  7. Check the state of the gate wheels, examining both the condition of the bearings and the wear on the rolling face of the wheel.
  8. Check the condition of the gate rail and ensure that it is perfectly straight and not corrugated.
  9. Check for excessive build-up of dirt on the gate rail which might affect its free movement, and ensure that there is no vegetation or anything else obstructing the movement of the gate.
  10. Make sure that the rack mesh is within specification along the entire travel of the gate – the rack mustn’t press down onto the pinion at any point.
  11. Check that the gate aligns properly with its closed catch bracket when closing.
  12. Make sure that the gate is fitted with an adequate Endstop that will stop the full force of the gate when opening.
  13. Make sure that the gate’s guide-rollers adequately support the gate in the upright position and allow free movement of the gate along its entire length of travel.
  14. Check that the gearbox is securely mounted and properly aligned to the movement of the gate (i.e. parallel to the gate).

Symptom: Unable to complete Gate Setup:

Possible causes: 

  1. The sensor is receiving dual pulses from the origin magnet due to one of the following causes: 
  2. Sensor positioned too far from the origin magnet
  3. Sensor and origin magnet positioned at different heights
  4. Incorrect orientation of magnet inside the enclosure
  5. More than one magnet on the gate
  6. Incorrect orientation of origin magnet
  7. Magnetised item on the rack
  8. Incorrect orientation of the electric motor is causing induction
  9. Missing pins on origin enclosure
  10. Faulty harness, Faulty origin sensor.


  1. Ensure that the sensor is as close as possible to the origin magnet – ideally, the gap should be approximately 13mm.
  2. The sensor and origin magnet should be positioned at the same height.
  3. Ensure that there is only one magnet on the gate.
  4. Ensure that there are no items such as metal bars on the rack that could have become magnetised.
  5. Orientate the electrical motor so that the wires are facing away from the controller.
  6. Replace faulty origin sensor.
  7. Open sensor enclosure and correct orientation of the internal magnet.

Symptom: Gate does not open/close:

Audible feedback: Five beeps periodically for 30 seconds.

Possible causes:

  1. Intermittent or loose connection between motor and controller
  2. The H-bridge on the controller is damaged, possibly a blown FET
  3. The electric motor is faulty or has been disconnected.


  1. Check drive connections
  2. Check that the MOTOR, FUSE and DRIVE cells are all ticked in the information screen
  3. An ‘x’, question mark or anything other than a tick indicates a fault
  4. In the case of a damaged H-bridge, the display will typically indicate the part of the bridge that is damaged (i.e. Q1Q3, Q2Q4, etc.).
  5. For an explanation of the information screens found on the D-Series range of controllers, refer to Appendix B on page 73
  6. Ensure that the electric motor terminals are connected to the controller.

Please note that this is a general guide and the exact troubleshooting steps may vary depending on the specific model and configuration of your Centurion D3 Gate Motor. Always consult with a professional or the manufacturer if you are unsure.

Centurion D3 Troubleshooting Manual

Did the above quick Guide not help? Try this link with a Complete Troubleshooting Guide for the Centurion Gate Motor Troubleshooting Guide

Still, struggling with your gate motor installation after following these instructions? Contact Pro Gate Motor today and get help today from a trusted partner in your area!

Centurion D3 Troubleshooting Tips An Tricks

Still, struggling with your gate motor installation after following these instructions? Contact Pro Gate Motor today and get help today from a trusted partner in your area!

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* We do not sell spares

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