Commercial & Industrial Hub
VFD Pump Troubleshooting Basics
Overcurrent, overvoltage, and overheating trips on VFD-driven pumps — what the faults mean and who should diagnose them.
Reading VFD faults
A variable frequency drive controls pump speed and protects the motor. Fault codes like overcurrent, overvoltage, undervoltage, and overtemperature each point toward specific causes.
Repeated trips can stem from a failing motor, a blocked pump, incorrect drive parameters, or power-quality problems on the incoming supply.
Why this needs a professional
VFDs involve stored electrical energy and programming that, if mishandled, can damage equipment or injure personnel. A qualified pump controls technician should diagnose and clear persistent faults.