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FANUC Alarm SRVO-151 — SERVO FSAL(INV) alarm

Manufacturer wording — SERVO FSAL(INV) alarm (G:%d A:%d)
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC SRVO-151 (“SERVO FSAL(INV) alarm”): The cooling fan for the control circuit stopped. First check: Check or replace the fan. Likely part: Cooling fan (Cooling fan).

Updated 2026-09-17 · LogrobotLM reference

Description

The cooling fan for the control circuit stopped.

Remedy

Check or replace the fan.

Part to check / replace

FANUC SRVO-151 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

SRVO-149SERVO HCAL(INV) alarmSRVO-150SERVO FSAL(CNV) alarmSRVO-152SERVO IPMAL(INV) alarmSRVO-153SERVO CHGAL(CNV) alarm

Same hardware involved

SRVO-014Cooling fanSRVO-015Cooling fanSRVO-135Cooling fanSRVO-200Cooling fan

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 →