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FANUC Alarm SPOT-072 — PAUSE Iso contactor fault-gun 1

FANUC SPOT-072 (“PAUSE Iso contactor fault-gun 1”): The isolation contactor on the specified weld controller is in a fault condition. First check: Make sure that the CLOSE CONTACTOR macro instruction has been programmed in the teach pendant program.

Updated 2026-09-17 · LogrobotLM reference

Description

The isolation contactor on the specified weld controller is in a fault condition. If no program is running, then this message is posted if either the Iso contactor output is high or the Iso contactor input is high. If a program is running, or a manual weld is being executed, then the output, if defined, must be high, and the input, if defined, must be high too.

Remedy

Make sure that the CLOSE CONTACTOR macro instruction has been programmed in the teach pendant program.

Related codes

SPOT-070Internal Error (system)SPOT-071PAUSE Backup not closed-gun 1SPOT-073PAUSE Water saver fault-gun 1SPOT-074PAUSE Water flow fault-gun 1

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 →