If you plug in a 1200W water pump (overloading the unit), the inverter will automatically shut down after 5 seconds and beep an error code. The manual uses a "Load Limit" chart to help you calculate your total wattage.
: You can choose between "High Performance" (to run fans faster) or "Long Backup" (to stretch your battery life) depending on your immediate needs.
| Problem | Possible Cause | Solution (From Manual) | | :--- | :--- | :--- | | | Battery completely dead or Battery terminals loose | Check battery voltage with a multimeter (Should be >10.5V). Tighten clamps. | | Inverter beeps continuously, but no load | Internal overload has tripped or short circuit | Turn off inverter. Unplug all outputs. Turn on again. If still beeps, call service. | | Battery not charging | Loose AC input connection or Charging fuse blown | Check wall socket working? Check the glass fuse inside the inverter (visible from the side panel). Replace with 15A fuse. | | "Overload" error on display | Connected devices exceed 1000VA capacity | Remove high-wattage devices (mixers, heaters). Keep backup load under 800W. | | Backup time is very short | Battery is old, or water level low (lead-acid), or Battery is not fully charged | Check electrolyte level (if tubular battery). Perform a full 10-hour charge. If battery is >3 years old, replace it. |
