FANUC Alarm SYST-021 — WARN System not ready, press reset
FANUC SYST-021 (“WARN System not ready, press reset”): An error has been detected by the system First check: Press RESET to clear error condition
Updated 2026-09-17 · LogrobotLM reference
Description
An error has been detected by the system
Remedy
Press RESET to clear error condition
Related codes
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →