Variable Frequency Drive VFD Troubleshooting
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Motor won't start
Motor turns wrong rotation
Drive trips breaker or blows fuse instantly
Motor runs but trips drive sometimes
Motor Noise-Loud Vibration
Motor Noise-Loud, High Pitch Whine
Motor runs full speed from start
Motor runs too fast
Motor runs too slow
Drive trips when stopping motor
Motor thermal overload device trips drive
Motor speed is "hunting" for correct speed
Drive display/keypad LCD is not on or lit
Motor stalls during acceleration
Status LED's on drive are not lit
Drive trips while accelerating to speed
Drive trips while decelerating motor speed
Motor is hot
Drive doesn't seem to follow auto-reference input
The motor takes longer to stop than I expect
The motor stops faster than I expect
Adjusting decel/accel time has no affect
Motor accelerates faster to its set speed than I expect
Motor acceleration to set speed is slower than I expect
Drive fault will not reset.
Drive "tripped" & won't restart
"Not Ready","Low Voltage","UnderVoltage" at Power Up
Drive trips "Overvoltage"
Heatsink Over-Temperature trip persists, unexpected
Drive Overcurrent faults/trips instantly on RUN command