| Installation and ventilation |
Mount on a strong, flat surface using the four case mounting holes; horizontal installation is recommended. Keep more than 15 cm clear at the front and rear ventilation openings, do not obstruct the fan or stack objects on the inverter, and avoid dusty or moist locations, direct sunlight, high heat and ignition sources. Connect FG to the system grounding point. |
| Battery bank and safe connection |
Use batteries of the same brand, model and capacity in one bank. Set the front power switch to OFF before connecting or removing batteries. Check battery and PV polarity and the permitted input-voltage ranges: reverse polarity can damage the unit and open an internal fuse. Arrange repair through a qualified technician or MEAN WELL; do not open or repair the inverter yourself. |
| Cable and battery selection |
The manual recommends keeping battery leads as short as possible, below 1.5 m in its system example. For this 24 V model it suggests 4 mm² / 10 AWG battery leads and a 24 V lead-acid bank of 60–200 Ah; PV input wiring is suggested as 1.5 mm² / 14 AWG. Size the actual cables for their length, current and applicable safety requirements. These are selection recommendations, not supplied accessories or approval for other battery chemistries. |
| Changing output settings |
With the inverter OFF, keep the input battery connected and remove the loads. Use an insulated plastic stick to hold the Setting button while switching the inverter on; release after about 5 seconds when it beeps. Press for about 1 second to step through settings, then hold for 3–5 seconds until the beep to save. The inverter restarts and retains the setting after power removal. Check the manual setting-indicator chart before reconnecting loads. In setup mode, a steady red Status LED indicates 50 Hz and a flashing red Status LED indicates 60 Hz. The Battery LED indicates the selected AC voltage in this setup mode: steady green for 100 V, flashing green for 110 V, steady yellow for 115 V and flashing yellow for 120 V. These setup indications differ from the normal-operation status and battery-capacity indications. |
| Startup-load selection |
Check the starting current against the inverter capability. Inductive or motor loads can require 6–10 times their rated current. For capacitive or rectified loads, the manual recommends starting at no load or light load and increasing the load gradually only after the inverter operates steadily. |
| Fault recovery and service |
After an overtemperature shutdown, allow at least 30 minutes before attempting a restart and correct the heat or ventilation problem. Resolve a short circuit, overload or input-voltage fault before restarting. These procedures do not make reverse-polarity damage self-recovering. |
| Battery maintenance and warranty |
Inspect and maintain batteries regularly; the manual suggests an annual check and professional replacement of aged batteries. The manufacturer specifies a 3-year warranty under normal operating conditions. Unauthorized component replacement, modification or self-repair may void the warranty. |
| Charging and low-voltage restart |
The manual describes charger activation or restart around 26 V battery voltage and AC-output recovery after the battery reaches 26 V and a 3-minute delay following low-voltage shutdown. For charge termination, use the current catalog condition: charge current below 10% of rated charge current AND solar input power below 50 W. Reaching the constant-voltage level alone is not the complete OFF condition. |
| Normal indicators and remote control |
In normal operation, the Status LED is green for normal operation, orange for remote OFF and red for an error. The Battery LED is green above 70% capacity, orange at 40–70% and red below 40%. These colours have different meanings in the output-setting mode. Remote ON/OFF operates only while the front power switch is ON: an open remote connector enables remote ON and a shorted connector commands remote OFF. |
