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4. UNIT
OPERATION
WARNING:
RISK OF EQUIPMENT DAMAGE
For MW 1210, MW 1215: Do not plug surge-protected power bars into the unit’s 120 VAC
outlets. The surge protected components on the surge-protected power bar may not like the
modified sine wave output generate by the inverter.
Do not connect an AC power source like utility power or generator to the unit 120 VAC outlets.
Turn ON and OFF the 120 VAC and USB
Press and hold the “Power/Select” button for 1 second until a beep is sounded. Display will
show the measured battery voltage and output power alternatively. Status LED will turn
green. Both 5V USB and 120 VAC are available.
Press “Power/Select” button to turn unit off.
Remote ON /OFF (Optional)
If optional remote is used, the Remote ON/OFF momentary switch is connected in parallel
with the “Power/Select” button on the unit. Same procedure applies to ON and OFF the unit.
Understanding the Display & Status LED
Display:
’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 trouble shooting section in details
Status LED:
Green: Unit operation is normal
Amber: Warning is detected. Unit will shutdown at any time. Please check error code to
troubleshoot the unit.
Red:
Error is detected and unit has shutdown. Please check error code to troubleshoot
the unit.
Understanding the Error Code
Code Condition
Corrective
Action
E01
Unit has sensed input under voltage
and has shutdown
Recharge battery immediately and
restart unit
E02
Unit has sensed input over voltage
and has shutdown
Check battery voltage or if any external
charger is connected to the battery bank
E03
Unit output has sensed overload or
short circuit and was shutdown
Check load connected to the output.
Reduce load and restart the unit
E04
Unit has sensed internal
temperature was high and has
shutdown
Turn unit off and wait for 15 minutes
before restarting. Check if any object
has blocked the air flow of the unit
E05
Unit has sensed input voltage is low
and warning occurs
Recharge battery as unit will shutdown
shortly
E06
Unit has sensed load connected is
close to overload shutdown limit
(Not applicable for MW1210,
MW1215)
Reduce load
E07
Unit has sensed internal
temperature is high and is close to
thermal shutdown limit
Reduce load and check if any ventilation
of the unit is blocked
AC Load on Power Inverter
Although the Power Inverter can provide high surge power up to two times the rated output power,
some appliances may still trigger on the inverter protection system. A higher power inverter is
required for those appliances.
For MW 1210, 1215 modified sinewave inverter, some appliances like speed controllers found in
some fans, power tools and some power tools’ AC charger may not like the modified sine wave
