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at the Front AC panel of the Power inverter. Please note polarity.
Test the Power Inverter Connection:
• Turn unit on by pressing and holding the On/Off button on the main unit for about a second
until a beeping sound occurs. The 'Status' light turns on indicating the Power Inverter is ON.
Check the digital display showing measured battery voltage and output power alternatively.
Both AC output and 5V USB are now available.
• Plug in a small AC load like a 40W table lamp or small appliance to the AC socket to verify AC
is available. If AC is not available, check for error code on display or troubleshooting section.
The unit is successfully installed and functioning properly.
Test the GFCI Monthly: (SW2420 - 120V model only)
• Use the following instruction to perform a monthly test of the AC Output GFCI Socket to
ensure the GFCI is functioning properly.
• Turn unit on and plug a small AC load (e.g. 40W light bulb) to the AC Output GFCI Socket.
• Check that the AC load is ON.
• Press 'Test' button and observe a clicking sound. Check that the AC load is turned off.
• Press 'RESET' button and check that the AC load is back ON again.
Note: This test is performed when Power Inverter is ON.
4. UNIT OPERATION
Turn ON and OFF the unit
• Press and hold the "Power/Select" button for 1 second until a beep is sounded.
• Display will show the Load Sense setting "LS0" or "LS1" for a few seconds to indicate the load
sense setting ('LS0' = Load Sense function disabled, 'LS1' = Load Sense function enabled).
See more details in "Understanding and setting the Load Sense Function" below.
• Display will then show the measured battery voltage and output power alternatively. Status
LED will turn green. 5V USB and AC output are available.
• Press "Power/Select" button to turn unit off.
Remote ON /OFF Switch (Optional)
• If optional 'Remote Switch' is used, the ON/OFF momentary switch on the remote switch is
connected in parallel with the "Power/Select" button on the unit. The switch shares the same
function as the "Power Select" function on the unit.
Understanding the Display & Status LED
LED Display:
'LS0'
Display shows Load Sense setting (LS0 indicates load sense function is disabled)
'12.5'
Display shows measured battery voltage
'0.80'
Display shows total output AC power in kW (800W as shown)
'E01'
Display shows error or warning code. See Understanding the Error Code for details
Status LED:
Green: Unit operation is normal
Amber: Warning is detected. Unit will shutdown at any time. Please check Understanding the
Error Code and Troubleshooting section for details.
Red:
Error is detected and unit has shutdown. Please check Understanding the Error Code
and Troubleshooting section for details.
Understanding the Load Sense Function
The unit load sense function reduces power consumption in order to conserve power draw from
the DC source. Every time when the unit is turned on, it shows the load sense setting once
(either "LS0" or "LS1") before it shows the battery voltage and O/P power level in the display.
When the load Sense function is enabled ("LS1"), the AC output of the unit switches ON once
every few seconds to detect the AC load connected to the unit. If the load connected is > 10W,
the AC output will remain ON continuously until the AC load is reduced to below 3W. It will than
resume back to ON/OFF function until it senses the load connected is > 10W again.
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