MS300/VFD-EL/C2000/CP2000 - Err shows when changing a parameter

If you receive an error (Err) when trying to change a parameter it can be caused by several reasons.

1. The motor is running. Some parameters cannot be changed while the motor is running. 
2. Parameter 00-02 is set to 1. Parameter write protection is on. Change this parameter to 0.
3. Parameter 00-08 is set to 1. Parameter password is on. Either enter the password using parameter 00-07 or you will need to reset the password. This can be done by entering 9999 as the password into parameter 00-07 twice within 10 seconds.
4. If none of these work, as a last resort can try resetting you VFD to factory settings. Be careful you will lose all of your parameter settings! See MS300/C2000/CP2000/VFD-EL - How do I reset my Delta VFD to factory settings?