Atlas Copco Elektronikon Fault Code List

Atlas Copco Elektronikon Fault Code List

When an Atlas Copco compressor controller trips, the message on the Elektronikon screen can feel cryptic. To save you time, here’s a fault code reference you can use as a quick lookup guide. Keep in mind: these codes are indicators, not guaranteed diagnoses. Always confirm with basic checks before replacing parts.

How to Use This List

• Look up the code exactly as shown on your controller (e.g., A017, F011).
• Follow the suggested checks before clearing or resetting.
• If the same code repeats immediately, stop and investigate deeper—cycling power won’t solve the root issue.

Common Atlas Copco Controller Fault Codes

A017 – Drive Not Healthy

• Cause: The Variable Speed Drive (VSD) is reporting a fault or not ready.
• Checks: Cycle power, inspect drive LEDs or HMI, verify interface board connections. If fault persists, suspect drive or control board.

F011 – Motor Overtemperature

• Cause: Motor winding temperature exceeded limits.
• Checks: Clean coolers, confirm cooling fan operation, check ambient conditions, verify temperature sensor wiring.

F006 – Inverter Overtemperature

• Cause: VSD inverter module is overheating.
• Checks: Inspect airflow, clean dust from heat sinks, ensure fans run, verify ambient temperature.

F020 – Overcurrent

• Cause: Excessive current drawn by the motor.
• Checks: Inspect for jammed element, blocked inlet valve, or mechanical binding. Verify motor insulation and downstream load.

F023 – Overvoltage

• Cause: Incoming power supply above acceptable limits.
• Checks: Confirm supply voltage at terminals, check braking resistor circuits on VSD units, verify utility feed stability.

Communication / Converter Timeout

• Cause: Loss of communication between Elektronikon and VSD or converter.
• Checks: Inspect comms wiring, reseat connectors, confirm service switch position, restart both devices together.

Conv.FormatFail / Parameter Fail

• Cause: Parameter mismatch or corruption in the drive.
• Checks: Verify correct service/run switch position, reload parameters from backup if available, inspect control boards.

Blank Screen (No Display)

• Cause: Loss of controller display power or board failure.
• Checks: Confirm 24VDC supply, reseat ribbon cables, replace display if power is present but unresponsive.

Run Enable Open

• Cause: A permissive or interlock is open.
• Checks: Verify door switches, emergency stop, external run signal, and I/O wiring.

Why Codes Repeat

If a fault keeps coming back after reset, the root cause is still present. Common overlooked culprits include:

• Loose connectors that only fail under vibration.
• Dirty coolers or blocked air paths causing gradual overheating.
• Incorrect parameter sets after drive replacement.

Next Steps

Think of this list as your “fault code dictionary.” It points you in the right direction, but solving the issue often requires deeper checks. If you’re responsible for keeping a production line running, having these codes at your fingertips means faster troubleshooting and less downtime.