Description
Fault Code (4)4 is displayed when the grid sensor (CT sensor) is incorrectly installed, resulting in a communication issue. This error typically occurs when the sensor is not properly connected to the correct cable or when the sensor terminals are wired incorrectly.
Checks to Perform
1. Verify the Grid CT Sensor Installation
- Ensure that the grid CT sensor is securely installed on the correct cable.
- The CT sensor should be installed on the live grid cable (the cable that connects to the grid).
2. Confirm Correct Sensor Polarity
- Verify that the CT sensor is connected to the terminals with the correct polarity.
- The markings on the sensor should match the corresponding CT terminals on the device. Incorrect polarity can cause incorrect readings or communication failures.
3. Refer to the Installation Manual
- For detailed instructions on proper installation, refer to the Grid CT section in the manual.
- The manual will provide specific guidance on how to securely and correctly install the grid CT sensor, ensuring proper functionality.
Post-Check Actions
- After making the necessary corrections, restart the system to check if the error is resolved.
- Monitor the device’s performance to ensure that the grid sensor is functioning as expected.
- If the error persists or if you need additional support, consult technical support or refer to the manual for further troubleshooting steps.
Preventative Recommendations
- Ensure that the grid CT sensor is inspected periodically to ensure it remains securely attached and properly connected.
- If possible, label cables and connections clearly to avoid installation errors.
- You can see additional steps that can be taken in line with grid ct lost on zappi if you click here.