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Gantner access control reader LED states — troubleshooting

Updated

Introduction

This article provides a comprehensive guide for troubleshooting issues with Gantner access control reader devices connected to the Perfect Gym system. Gantner readers indicate their current status through LED colours. When the LED stays green continuously, the reader can appear functional but may not be reflecting its real-time state.

  • This article helps you when a Gantner access control reader keeps its LED light fixed on green.
  • This article will be helpful for IT Technicians, Administrators and PG Champions at clubs using Gantner access control readers.

Before you start

This article applies to Gantner USB and Gantner network readers integrated with Perfect Gym software. For a complete list of compatible Access Control devices, see List of compatible Access Control devices.

Before troubleshooting, verify that the LED actually stays green at all times, including when no member is scanning. A short green flash on a successful scan is expected behaviour and not a fault.

Instruction

1. Reset the reader (the "Power Nap")

The simplest fix is often a hard reboot. This clears the local memory and resets the LED status.

  • Power down the reader for about 30 seconds.
  • Reconnect the power and let the reader boot up.
  • Observe the LED behaviour during boot-up and immediately after.

If the LED turns green again immediately upon boot-up, the issue is likely a command coming from the software (a stuck door-contact state rather than a reader fault). Continue to step 2.

2. Check the door contact state

Gantner readers often change LED colour based on the state of the connected door contact. A "held open" door signal can keep the reader's LED green permanently.

  • Check the door contact configuration in your access control system.
  • Check whether the linked door contact is reporting an open state.
  • If the door is physically closed but reporting open, inspect the door contact wiring or magnet alignment.

3. Confirm the reader is responding

Even when the LED appears stuck, the reader may still be processing scans correctly.

  • Have a member scan their access medium at the reader.
  • In PGM, go to Clients / Clients / Club members, open the member profile and go to Activity / Access control to confirm the scan was recorded.
  • If scans are being recorded, the LED issue is cosmetic; if scans are not recorded, escalate as a hardware fault.

If the issue persists

If neither the power-nap reset nor the door contact check resolves the LED behaviour, raise a support ticket with:

  • The exact reader model and location.
  • A photo of the reader showing the current LED state.
  • The result of the test scan from step 3.

You can also contact the support team:

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