For the HP-AHP20SA series, the following load-related fault indications and their universal troubleshooting steps are:
- Load Current Offset Error (Err33)
- Overload (Err48)
- Overload Lock (Err55)
In each case, the recommended steps are:
- Disconnect the load completely.
- Turn off the inverter/charger.
- Wait 5 minutes, then turn on the inverter/charger to check if normal operation resumes.
- If the issue persists, contact technical support for further assistance.