FANUC Alarm PNT2-166 — Linear Potentiometer Unstable
FANUC PNT2-166 (“Linear Potentiometer Unstable”): During Auto Calibration, the feedback from the linear potentiometer revealed large fluctuations in canister position over a short period of time. First check: Change the applicator and repair the malfunctioning linear potentiometer.
Updated 2026-08-29 · LogrobotLM reference
Description
During Auto Calibration, the feedback from the linear potentiometer revealed large fluctuations in canister position over a short period of time. If the linear potentiometer has been improperly installed or the magnet has been misaligned, it may be the cause of this alarm.
Remedy · Remède
Change the applicator and repair the malfunctioning linear potentiometer. Retry calibration with a different applicator.
Frequently asked · Questions fréquentes
- What does FANUC alarm PNT2-166 mean?
- FANUC PNT2-166 (“Linear Potentiometer Unstable”): During Auto Calibration, the feedback from the linear potentiometer revealed large fluctuations in canister position over a short period of time. If the linear potentiometer has been improperly installed or the magnet has been misaligned, it may be the cause of this…
- How do you troubleshoot FANUC alarm PNT2-166?
- Change the applicator and repair the malfunctioning linear potentiometer. Retry calibration with a different applicator.
Related codes / Codes liés
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 →