Lenze 15DAE222F10V100005 is a 3‑HP, 3‑phase AC 480 V power unit (I5DAE series) with integrated EMC filtering and IP20 protection. Common failures on this model include overheating of the inverter core or MOSFETs due to inadequate cooling, failure of the internal phase‑current sensors, and degradation of the EMI filter capacitors under prolonged high‑frequency operation. Typical symptoms are over‑temperature shutdowns, erratic speed control, or audible whining from the drive. First‑check diagnostics: verify that the 480 V supply is within spec and all phase currents are balanced; inspect the cooling fan and heatsink for dust or obstruction; and review any fault codes logged in the drive’s diagnostic interface.[oss-gpt-20b]