Cause : Charging feedback comes when charging feedback signal missing, incorrect parameter setting or the charging switch and DC switch were operated out of sequence, or a start command was issued before the unit was ready.

1. Check the feedback signal coming from the charging system.
2. Check the setting of parameter 195.09 Switch fuse controller. Enable the parameter only if an xSFC charging controller is installed.
3. The normal power-up sequence is:
   1. Close charging switch.
   2. After charging finishes (charging OK lamp lights), close DC switch.
   3. Open charging switch.