LogrobotLM

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FANUC Alarm SRVO-142 — SERVO OHAL1(INV) alarm (G:%d A:%d)

FANUC SRVO-142 (“SERVO OHAL1(INV) alarm (G:%d A:%d)”): The servo amplifier overheated. First check: If the robot is overloaded or the duty cycle exceeds specification, this alarm occurs. Likely part: Servo amplifier (Servo amplifier).

Updated 2026-08-29 · LogrobotLM reference

Description

The servo amplifier overheated.

Remedy · Remède

If the robot is overloaded or the duty cycle exceeds specification, this alarm occurs. Check the regenerative discharge transistor. Check the thermostat on the servo amplifier after the servo amplifier has cooled. It should not be open. If the problem persists, replace the servo amplifier. Check the controller cabinet fans for blocked filters; clean them if necessary.

Part to check / replace · Pièce à contrôler / remplacer

FANUC SRVO-142 points to the hardware below — start here before ordering. · SRVO-142 met en cause l'organe ci-dessous : commencez par là.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering. · Touchez une pièce pour tous les codes qui la citent ; vérifiez la variante exacte avant commande.

Frequently asked · Questions fréquentes

What does FANUC alarm SRVO-142 mean?
FANUC SRVO-142 (“SERVO OHAL1(INV) alarm (G:%d A:%d)”): The servo amplifier overheated.
How do you troubleshoot FANUC alarm SRVO-142?
If the robot is overloaded or the duty cycle exceeds specification, this alarm occurs. Check the regenerative discharge transistor. Check the thermostat on the servo amplifier after the servo amplifier has cooled. It should not be open. If the problem persists, replace the servo amplifier. Check the controller…
Which part is involved in FANUC SRVO-142?
SRVO-142 points to Servo amplifier (Servo amplifier). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

SRVO-138SERVO SDAL alarm (G:%d A:%d)SRVO-141SERVO OHAL1(CNV) alarm (G:%d A:%d)SRVO-143SERVO PSFLAL(CNV) alarm (G:%d A:%d)SRVO-144SERVO LVAL(INV) alarm (G:%d A:%d)

Same hardware involved / Même matériel en cause

SRVO-018Servo amplifierSRVO-021Servo amplifierSRVO-022Servo amplifierSRVO-023Servo amplifier

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →