FANUC Alarm SPOT-401 — PAUSE WTC E01: Controller Failure

FANUC SPOT-401 (“PAUSE WTC E01: Controller Failure”): This is a fault from the WTC weld controller. First check: View the error code information in the WTC weld controller manual.

Updated 2026-09-17 · LogrobotLM reference

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 →