Strongway 53067, Owner'S Manual, Page: 13 / 16

Page 13 of 16
Note: Most devices require an initial surge of power to start. Most devices can be started up with two
times their power rating. Be aware of the start-up power of the device(s) you intend to use for the
inverter. This inverter has the start-up capacity two times of rated power. The combined loads must
not exceed the rated power. The less combined wattage used, the longer the inverter will operate
before the battery needs to be recharged.
After Each Use
When the inverter is not in use, disconnect the DC cable clips from the battery to prevent a slight
discharge of battery.
Maintenance
The inverter will operate efficiently when maintained properly. Follow these steps:

Clean the exterior surface of the inverter with a damp cloth to prevent accumulation of dust and
dirt.

Tighten the screws on the DC input terminals.

Recharge the battery before it is discharged to 50%. This will extend the durability and efficiency
of the battery.
Troubleshooting
Use the table below to troubleshoot problems before contacting service personnel or your local dealer.
If the problem continues after troubleshooting, call your local dealer for assistance.
Failure Possible Cause Corrective Action
The digital
display shows
“LUP”.
Low battery voltage shut-down
feature turns the inverter OFF. Recharge the battery. Check if cables and
connections are secure.
DC wiring is incorrect.
Use proper cable length and gauge.
Create secure cable connections.
Battery condition is poor. Charge or replace the battery if needed.
The digital
display shows
“OUP”.
High battery voltage shutdown
feature turns the inverter OFF. Make sure the inverter is connected to a
12 V battery.
The digital
display shows
“OLP”.
AC output overload shutdown
feature turns OFF the inverter. Make sure the load attached to the inverter
is within the operating limit.
The digital
display shows
“OCP”.
The digital display
shows “OCP”.
Make sure the inverter is placed in a well-
ventilated area and ventilation openings
are not obstructed. Reduce the ambient
temperature if possible.
The digital
display shows
“OPP”.
Occurrence of short circuit. Check the AC wiring.
No output voltage
and voltage
indication.
The inverter is in the OFF position. Turn ON the inverter.
There is no power supply to the
inverter.
Check the wiring to the inverter.
The DC polarity is reversed.
Reverse DC polarity will damage the
inverter and voiding the warranty. Have a
qualified service technician repair it.