LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free → · Le diagnostic IA qui lit la sauvegarde de votre robot, sans rien téléverser.

FANUC Alarm PNT1-123Battery Low

FANUC PNT1-123 (“Battery Low”): The battery in the PSU or encoder is low or zero. First check: Replace the old battery with a new battery. Likely part: Backup battery (Backup battery).

Updated 2026-08-29 · LogrobotLM reference

Description

The battery in the PSU or encoder is low or zero.

Remedy · Remède

Replace the old battery with a new battery.

Part to check / replace · Pièce à contrôler / remplacer

FANUC PNT1-123 points to the hardware below — start here before ordering. · PNT1-123 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 PNT1-123 mean?
FANUC PNT1-123 (“Battery Low”): The battery in the PSU or encoder is low or zero.
How do you troubleshoot FANUC alarm PNT1-123?
Replace the old battery with a new battery.
Which part is involved in FANUC PNT1-123?
PNT1-123 points to Backup battery (Backup battery). Confirm the real cause against the robot backup before replacing a part.

Related codes / Codes liés

Same hardware involved / Même matériel en cause

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 →