Q: What should I do if the charger displays error codes "Earth Faulting" or "Err:pin"?

A: Please follow these steps to troubleshoot and resolve the issue:  
1. Basic Checks: Immediately stop charging and disconnect the power supply. Check whether the charging station's grounding wire is securely connected and not loose.  
2. System Self-Test  
   - Enter the Main Menu
   - Select Settings
   - Run the Ground Check  
   - Follow the on-screen instructions to complete the test  
3. If the issue persists after the self-test:  
   - Check the grounding wire status in the home distribution box  
   - Test whether other appliances are properly grounded  
   - Ensure the charging environment is not damp