IGFOL-F: Grid current tracking fault

The "Grid current tracking fault" error suggests that the inverter is unable to accurately monitor and control the current flowing to the utility grid. This error is also sometimes displayed as "IGFOL-F".

Why it's problematic

This fault prevents the inverter from safely feeding electricity into the grid, leading to a system shutdown and loss of power generation.
Without proper current tracking, there is a risk of instability and potential damage to the inverter or the grid.

Possible causes

Grid instability: Fluctuations or disturbances in the grid voltage or frequency can disrupt the inverter's current tracking capabilities.
Internal inverter issues: A malfunctioning sensor, control circuitry, or other internal components within the inverter can cause errors in current measurement and tracking.

Before you begin

Safety First: Working with electrical equipment always involves risks. Ensure you are qualified and follow appropriate safety precautions. Disconnect the inverter from both AC and DC sources before performing any physical inspection or adjustments.

Gather Information: Before starting troubleshooting, have the inverter manual on hand. You should also gather information about the inverter model and serial number, the installation date, and the PV array configuration (number of panels, capacity, and number of strings).

Troubleshooting steps

Restart the inverter: The first step is to try restarting the inverter to see if it resolves the error. This can help clear any temporary software glitches or communication issues.
Check the AC connection: Inspect the AC wiring and connections between the inverter and the utility grid. Ensure that all connections are secure, free from damage, and properly grounded. Loose or faulty wiring can interfere with current flow and tracking. You should use a multimeter to check if the AC voltage is within the range specified in your inverter’s manual.
Check the DC connection: Ensure the connections between the solar panels and the inverter are secure and free from damage. You can try disconnecting and reconnecting the DC input one by one, then restarting the inverter.
Check the inverter for any signs of physical damage: Inspect the inverter for any physical damage, such as overheating, loose components, or signs of water ingress. If any damage is found, stop the inspection immediately.

Verifying the solution

After performing the troubleshooting steps, observe the inverter's display. If the "Grid current tracking fault" error has disappeared, the inverter should automatically reconnect to the grid and resume normal operation. You can confirm this by checking the inverter's display, which should indicate normal grid parameters, power output, and operating status.

If the problem is not resolved

If the error persists after following all the above steps, there might be an internal fault within the inverter.

As a system owner: In this case, contact the inverter installer or distributor for further assistance. You can find the details of your installer in the MyAutarco app.
As a certified installer: Contact Autarco Support, you can submit a support case via Helios.