Cause : Line-to-Line Resistance Error comes when motor data entered during Auto-Tuning was incorrect or results from Auto-Tuning are outside the parameter setting range or the tuning process took too long. 

1. Make sure the data entered to the T1 parameters match the information written on the motor nameplate.
2. Restart Auto-Tuning and enter the correct information.
3. Faulty motor cable or cable connection.
4. Check and correct faulty motor wiring.