LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

FANUC Alarm SRVO-200 — WARN Control box fan abnormal

Warning
Hardware
cabinet cooling
Controllers
R-J3iB / R-30iA
FANUC class
WARN

FANUC SRVO-200 (“WARN Control box fan abnormal”): The control box fan motor has failed. First check: Check and/or replace the fan. Likely part: Cooling fan (Cooling fan).

Updated 2026-10-22 · LogrobotLM reference

Description

The control box fan motor has failed.

Remedy

Check and/or replace the fan. Refer to the maintenance manual for details.

Field diagnosis

The control box fan has failed.

What to check

  • Check and replace the fan.
  • Note: R-J3iB/R-30iA generation.

Part to check / replace

FANUC SRVO-200 points to the hardware below — start here before ordering.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.

Related codes

Same hardware involved

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 →