Product Manual
2524
This unit is tted with LED indicators and an alarm buzzer to display and diagnose any 
problems in operation. In the event of a malfunction, the unit will sound the buzzer to alert 
you prior to shutting itself down. You should immediately check which LEDs are glowing to 
determine the cause of the alarm. 
LED Indicator Meaning
BATT. OVERTEMP
The temperature of the battery being charged is too high for safe charging.
FIX:
The battery may be defective or there may not be adequate ventilation 
to cool the battery. 
Check that the battery is not defective using a multimeter. If it is 
working correctly, reposition the battery for better air circulation. 
OVERTEMP
The unit’s internal temperature is too high for normal operation. 
FIX:
The unit’s cooling fans may have failed or there may not be adequate 
ventilation to cool the power suppy/battery charger. Check that the 
cooling fans are still working; if they are not then the unit must be 
returned to an authorized service center for repair. 
If they are working correctly, remount the battery charger for better air 
circulation. 
OVER LOAD
The output current has exceeded the peak rating for too long.
FIX:
Reduce the load on the power supply by disconnnecting some devices from 
the outpout. 
LOW VOLTAGE IN
The input voltage is detected to be too low for normal operation
FIX:
Check that the power source is properly rated for use for the battery 
charger. Check that the input wiring and connection are free of damage 
and corrosion. 
If all of the above are in proper working order, the cause is likely an 
internal component failure and the unit must be returned to an autho-
rized service center for repair. 
LOW VOLTAGE OUT
The output voltage is detected to be too low for normal operation
FIX:
The output current might be exceeding the unit’s peak rating causing 
the output voltage to drop to try and maintain the current at that level. 
Check if the output current is above its maximum rating, using a multi-
meter. If it is, reduce the load connected to output.
Check that the output wiring and connections are free of damage and 
corrosion. If all of the above are in proper working order, the cause is 
likely an internal component failure and the unit must be returned to an 
authorized service center for repair.
Troubleshooting










