FANUC Alarm SPOT-043 — PAUSE Stud Welder Weld Fault
FANUC SPOT-043 (“PAUSE Stud Welder Weld Fault”): The Stud Weld controller has signaled the robot that a weld fault has occured. First check: The stud checker will automaticly verify the quality of the weld.
Updated 2026-09-17 · LogrobotLM reference
Description
The Stud Weld controller has signaled the robot that a weld fault has occured. This indicates that insuficient current was passed during the weld, genererally resulting in a poor quality weld.
Remedy
The stud checker will automaticly verify the quality of the weld. If bad, check the position of the gun at the weld spot. Also check the schedule settings.
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 →