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 →

ABB Error 39414 — Capacitor unit / DC link fault

Error

ABB 39414 (“Capacitor unit / DC link fault”): Capacitor unit type code unknown to the system. Likely part: Unité condensateurs / DC-Link (Unité condensateurs / DC-Link).

Updated 2026-10-22 · LogrobotLM reference

What it means

Capacitor unit type code unknown to the system.

What to check

  • Check the type of capacitor unit installed and its compatibility with the software; replace the unit if the type is incorrect.
  • Note: Hardware/compatibility fault of the capacitor module.

Part to check / replace

ABB 39414 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

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 →