Cause : Parameter EEPROM fault comes when read or write failure while access to EEPROM. This can also be caused by the EEPROM being full, too many parameters have been changed.

• Must be power-cycled to cancel this bug as some parameters may not be read correct.
• Factory reset and new parameterization, if pow- er-cycle does not remove fault.
• Change some parameters back to default values if the EEPROM is full, then power-cycle.
• Change inverter.

Note:

• r0949 = 1: EEPROM full
• r0949 = 1000 + block No: reading data block failed
• r0949 = 2000 + block No: reading data block timeout
• r0949 = 3000 + block No: reading data block CRC failed
• r0949 = 4000 + block No: writing data block failed
• r0949 = 5000 + block No: writing data block timeout
• r0949 = 6000 + block No: writing data block verify failed.

Here's how you can address this problem:

1. Power Cycle: Start by power cycling the inverter. Turn off the power to the inverter, wait for a few moments, and then turn it back on. Sometimes, a simple reset can resolve temporary issues with the EEPROM.

2. Check Connections: Ensure that all connections to the inverter, including power supply, control signals, and communication interfaces, are secure and properly seated. Loose connections can lead to communication errors or data corruption.

3. Perform Factory Reset: If the issue persists, consider performing a factory reset on the inverter. This will restore the inverter's settings to their default values. Refer to the manufacturer's documentation for instructions on how to perform a factory reset.

4. Inspect EEPROM: If possible, inspect the EEPROM physically to check for any signs of damage or corrosion. EEPROM chips are typically small integrated circuits soldered onto the inverter's circuit board. Damage to the EEPROM chip may require replacement of the affected component.

5. Update Firmware: Ensure that the firmware of the inverter is up to date. Manufacturers often release firmware updates that include improvements or bug fixes related to EEPROM handling and parameter storage. Updating the firmware may resolve the issue.

6. Replace EEPROM: If the EEPROM is found to be faulty or damaged, it may need to be replaced. Contact the manufacturer or an authorized service provider for assistance with obtaining and replacing the EEPROM chip.