Fault Indication
LED and Buzzer
Status
Possible Cause
Fan does not spin
Installation & Wiring
Note:
this is a guide only. It is the responsibility of the installer to ensure correct wiring.
Solution
Short circuit protection
Batteries are aged or broken
If the unit has been tested and found faulty, you must get a RMA number before sending the unit in.
It is highly reccomended that wire connections be as short as possible, and less than 1.5 meters if possible. Long
DC wires may have Voltage drop and reduce the overall performances of an inverter. Make sure that suitable wires
are chosen based on the rating of current. Too small of a cross-section may result in low input and high heat.
Check the DC input source. Make sure the
voltage is within required range AT
TERMINALS.
Make sure that the ventilation is not blocked or
the ambient temperature is not too high.
Minimize load or reduce heat.
Make sure the load isnt too hihgh for the unit. Or
the start up current is not too high. (for inductive
or capacitive loads) Startup can be as high as 7-
10 times cont rating (will overload)
Make sure the output is not overloaded or shout
circuited.
Get batteries tested. Replace batteries.
Connection. Obstruction. Faulty
Check that the load is not too large for battery
size.
Check the leads for fan on PC board. Remove
any obstruction.
Condition
Buzzer sounds 3 times (LED
flashes red 3 times)
The inverter should be serviced by a professional technician. Any incorrect usage or modification may damage the
unit or result in shock hazard or damage to the unit. If you cant clear the fault condition, contact your place of
purchase.
Batteries are not lasting
Battery capacity is too small
Overload protection
Abnormal input
Over temperature protection
No AC output voltage
Buzzer sounds 4 times (LED
flashes red 4 times)
Buzzer sounds 5 times (LED
flashes red 5 times)
You must contact Electro Parts for a Return Manufacturer Authority (RMA) number
Fault Conditions
Buzzer sounds once and LED
flashes green once
Buzzer sounds 3 times (LED
flashes red 3 times)
This indicates normal operation. This occurs when the unit starts up.
Low voltage protection:
These units have three stages of UVP;
1) WARNING: Single slow warning beep & LED flash when Input is
below 11.2V.
2) AC SHUTOFF: Below 10.5V the Output shuts off & 3 beeps with 3 x
LED flashes.
3) INV SHUTDOWN: It will then repeat this cycle 10 times ( 3 x beeps / 3
Flashes x 10), unless the input Voltage increases to above 12.6V within
that time, It will completely shut down so as to not draw any power from
the battery (The unit will need to be switched back on manually). (all
figures are double for 24V units)
Over load protection:
The load is 120% higher than rated power.
Reduce load and restart. THIS ALSO INCLUDES START UP POWER.
Over voltage protection:
The battery voltage is too high. Make sure
input voltage is lower than 15.5V for 12V models and 31V for 24V
models.
Over temperature protection:
The internal temperature is too high.
Reduce temp and make sure there are no vents being obstructed. Make
sure there is enough ventilation.
NOTE: diagnosing the fault without the unit being tested is not practical. If you cannot get the unit tested, you can
return/ freight the unit back to Electro Parts Aust Pty Ltd
