FANUC Alarm PNT1-139 — Cannot reset chain failure
FANUC PNT1-139 (“Cannot reset chain failure”): Reset chain failure detection cannot be executed. First check: Repair the circuit of the chain 1 (+24V) on the hardware, press the E-STOP button on the teach pendant, and turn the teach pendant E-STOP button clockwise to release it.
Updated 2026-08-29 · LogrobotLM reference
Description
Reset chain failure detection cannot be executed.
Remedy · Remède
Repair the circuit of the chain 1 (+24V) on the hardware, press the E-STOP button on the teach pendant, and turn the teach pendant E-STOP button clockwise to release it. Then, press RESET.
Frequently asked · Questions fréquentes
- What does FANUC alarm PNT1-139 mean?
- FANUC PNT1-139 (“Cannot reset chain failure”): Reset chain failure detection cannot be executed.
- How do you troubleshoot FANUC alarm PNT1-139?
- Repair the circuit of the chain 1 (+24V) on the hardware, press the E-STOP button on the teach pendant, and turn the teach pendant E-STOP button clockwise to release it. Then, press RESET.
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 →