Fanuc 0i Error Code 920

Fanuc CNC Critical System Alarm

Model: FANUC Series 0i / 0i Mate | Code: 920

Applicable Systems
Series 0i Series 16/18/21 Alpha Beta

Symptoms

A watchdog alarm was detected, indicating a system halt.

Possible Causes

  • System CPU or peripheral stopped responding.
  • Firmware crash or hardware fault.

Troubleshooting Steps

  1. Step 1: Check the system CPU and peripheral status.
    Watchdog cause identified.
  2. Step 2: Power cycle the system or replace faulty hardware.
    Watchdog alarm cleared after restart.

How to Reset

Fix the watchdog cause and reset to clear the alarm.

Related Fanuc Fault Codes

Source: Fanuc 0i/0iMate Alarm Code List, FANUC Corporation

Category: CNC