ST600s | Err.33, what does this message mean, what can be done?

If the error message Err.33 appears on the display of the frequency inverter, it is the ground fault 2.

Causes:

• The output of the frequency inverter is connected to ground.
• Error in the current detection circuit.
• The actual motor power differs greatly from the VFD power.

Solutions:

• Check that the motor wiring is correct.
• Replace Hall sensor.
• Replace the main control board.
• Reset the motor parameters as instructed.

If none of these error sources apply, please contact technical support.

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