ABB Error 39211 — Drive Unit / Power transistors fault
ErrorABB 39211 (“Drive Unit / Power transistors fault”): High temperature of the Drive Unit transistors of an axis. Likely part: Drive Unit / Transistors de puissance (Drive Unit / Transistors de puissance).
Updated 2026-10-22 · LogrobotLM reference
What it means
High temperature of the Drive Unit transistors of an axis.
What to check
- LOTO if working in the cabinet.
- Check ventilation/cooling, filters, ambient temperature and load; check the Drive Unit and its cooling.
- If the fault follows the module, continue isolating the Drive.
- Note: Thermal fault directly associated with the power stage of a Drive Unit; may be correlated with a cooling or module failure.
Part to check / replace
ABB 39211 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 →