How to Reset Atlas Copco Controller Faults the Right Way

How to Reset Atlas Copco Controller Faults the Right Way

When your Atlas Copco compressor trips on the Elektronikon, a quick reset might get you running again. But resets only work when the root cause is corrected. Use this guide to reset safely, avoid repeat trips, and keep your machine protected.

Read This First

• Lock out and tag out power before opening panels.
• Write down the exact fault text or code, plus ambient temperature and load conditions.
• Do not clear service timers unless maintenance has been performed.

What a Reset Actually Does

• A reset clears the controller state. It does not fix wiring, airflow, or parameter issues.
• If a fault returns immediately after reset, the cause is still present. Stop and diagnose rather than cycling power repeatedly.

Quick Triage: When a Reset Makes Sense

• OK to try: nuisance comm losses after a brief outage, one-off overtemp after a known airflow restriction, faults after a controlled power down.
• Do not reset repeatedly: overcurrent with unknown cause, persistent drive not healthy, signs of board or wiring damage, parameter or format errors.

Standard Reset Sequence

1) Record the Fault

• Capture the code exactly as shown (example: A017, F011). Note frequency and conditions.

2) Verify Power and Permissives

• Confirm correct incoming voltage at mains.
• Check that emergency stop is released, doors and interlocks are closed, and external run enable is present.

3) Restore Cooling and Ventilation

• Clean coolers and filters, confirm all fans operate, and verify ambient temperature is within spec.

4) Reseat Low-Voltage Connectors

• Inspect and reseat display ribbons, I/O plugs, and communication cables between the Elektronikon and VSD.

5) Perform a Clean Power Cycle

• Power down at the main disconnect. Wait for screens and drive indicators to fully extinguish.
• Allow a few minutes for DC bus discharge, then restore power and let the controller and drive boot fully before starting.

6) Controller Reset

• Use the Elektronikon reset or acknowledge routine per your model.
• If the same fault reappears, stop. Do not continue to reset without addressing cause.

Drive Related Faults (VSD Units)

• Check the VSD keypad or LEDs for an active trip and code.
• Inspect interface boards and wiring between controller and drive.
• If overvoltage or overcurrent is present, verify supply quality and look for mechanical binding or load issues downstream.

Parameter or Converter Errors

• Confirm the drive is in the correct service or run position if applicable.
• Only reload parameters from a known good backup or OEM set. Do not guess values.
• If parameters appear corrupt or mismatched after a component swap, correct that before any reset attempts.

Common Mistakes to Avoid

1) Power Cycling Until It Runs

• Repeated cycling can mask intermittent faults and stress electronics. Find and fix the cause first.

2) Clearing Service Timers As a Fix

• Service reminders are not fault clears. Perform the maintenance, then clear the interval.

3) Skipping Cooler Cleaning

• Overtemp faults often trace back to airflow. Clean coolers and verify fan direction and operation.

4) Replacing Parts Before Checking Interlocks

• Open door switches, e-stops, or missing remote enables can look like controller faults. Verify permissives first.

5) Mixing Firmware or Parameter Sets

• After a drive or board change, mismatched parameters can trigger converter errors. Load the correct set and document it.

After the Reset: Prove It Out

• Run to load and monitor temperatures, amps, and pressure stability.
• Trend a few starts and stops to confirm the fault does not recur.

Related Reading

• Why Is My Air Compressor Not Building Pressure
• Why Won’t My Compressor Start
• Compressor Turns On But Doesn’t Load
• Ingersoll Rand SSR Warnings: What Your Intellisys Panel Is Telling You
• Atlas Copco Elektronikon Fault Code List
• Atlas Copco Controller Fault Codes: Quick Troubleshooting Guide