Gyro Air G-700: Troubleshooting Err09 Under-voltage - GFCI Tripping

Created by Gabriel Izzo, Modified on Mon, 15 Apr at 11:19 PM by Gabriel Izzo


Resolving issues such as the machine tripping the GFCI breaker or displaying an ERR09 Under/Over Voltage Error can often be addressed with a relatively straightforward fix. Below is a step-by-step guide to help you safely access and adjust the necessary components within the machine's electrical system.

Confirm the G-700 is receiving 220v-240v single-phase power on a dedicated 20A circuit and that the breaker is a 220v double-pole breaker. An Err09 can be an indicator of low voltage and verifying that the power supply is delivering the required power should be done before other troubleshooting. After confirming the power supply is delivering the required voltage, remove the EMC filter screw on the side of the VFD using the steps below. 

The VFD has a built-in safety capacitor or EMC (Electromagnetic Compatibility) filter used to ensure that electrical equipment does not generate, or is not affected by, electromagnetic disturbance. With the EMC screw installed it has the potential to be more sensitive to any current leakage and may show symptoms of tripping a breaker or more typically GFCI (Ground Fault Circuit Interrupter) outlets. 

By removing the EMC screw, the leakage current to ground is reduced and the error code: Err09, if related, will clear and the machine will function normally.

For more information regarding the Inovance MD200 AC Drive please refer to the Inovance MD200 AC Drive User Guide.

Important Safety Precautions:

**CAUTION:** Ensure the machine is OFF, unplugged, and fully discharged before attempting any maintenance to avoid electrical hazards.

Steps to Access and Adjust the VFD:

1. Remove the Rear Panel:

  • Start by removing the rear panel that covers the main power switch to expose the internal components.

2. Access the Electrical Box:

  • Unscrew and remove the four screws securing the electrical box cover. Ensure the main power switch is set to the OFF position before removing the cover.

3. Adjust the Variable Speed Drive Position:

  • Remove the four screws that hold the plate containing the electrical components against the back wall of the electrical box
  • Carefully adjust the position of the variable speed drive on the left side to improve access to the VFD's left side.

4. Remove the EMC Filter Screw:

  • Locate and remove the screw labeled "EMC." This step may require a screw gun with a longer extension or a long screwdriver, depending on the placement within the unit

5. Reassemble the Electrical Box:

  • After removing the EMC screw, reattach the plate to the rear wall of the electrical box.
  • Replace the electrical box cover, ensuring the switch remains in the OFF position, and secure it with the four screws.

6. Test the Machine:

  • Plug in the machine and turn the switch to the ON/Standby position. 
  • Attempt to start the machine using either the remote control or the Basic Operating Panel (BOP).
  • Check if the issue with the ERR09 error is resolved.

By following these detailed steps, you should be able to address the problem effectively and safely restore your machine's operation.

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