ABB Error 39476 — Power rectifier fault
ErrorABB 39476 (“Power rectifier fault”): Excessive internal temperature measured on the power rectifier unit. Likely part: Redresseur de puissance (Redresseur de puissance).
Updated 2026-10-22 · LogrobotLM reference
What it means
Excessive internal temperature measured on the power rectifier unit.
What to check
- Check the axis cabinet fan, clean the filters and reduce the axis load.
- Note: Equivalent to the S2/S3-era cabinet rectifier overheating 593.
Part to check / replace
ABB 39476 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 →