The TM5‑015i‑1P (part 48691‑109) is an Advanced Drive Technology IFT AC drive cube used as the motor controller in Precor treadmill models. Common failure modes for this class of VFDs include overheating of the power MOSFET array, insulation breakdown on the 3‑phase output windings, and failure of the internal temperature sensor or over‑current protection circuitry; these often manifest as a loss of drive function or an “overheat” fault code. Initial checks should verify that the supply voltage to the cube is within spec (±10 % of rated), inspect the MOSFETs for discoloration or burn marks, and confirm that the cooling fan and heat sink are operating and free of debris. If the unit still fails after these steps, review the drive’s diagnostic LED pattern or serial error log for specific fault codes.[oss-gpt-20b]