If The Converter Fuse Blows; Troubleshooting - Schumacher Electric PID-500-USB Owner's Manual

 – The converter is overheated and automatically turns off for a period
of 1 to 3 minutes to cool. Make sure the converter is well ventilated. It will
automatically restart after it cools.
 – The vehicle's battery voltage is less than 10.5 volts.
 – Short circuit, power surge or overload in the device.
Your power converter is fitted with a fuse, which should not have to be replaced
under normal operating conditions. A blown fuse is usually caused by reverse
polarity or a short circuit within the device or equipment being operated.
If the fuse does blow, take the converter to a qualified technician for repair.
PROBLEM
Alarm is on.

IF THE CONVERTER FUSE BLOWS

TROUBLESHOOTING

POSSIBLE CAUSE
Display shows . Device
demands too much surge
power.
Device has a short circuit
Display shows . 12 volt
battery is too low.
Display shows voltage
between 10.5 and 11.0
volts.
Display shows . 12 volt
voltage is too high.
REASON/SOLUTION
Cycle the converter power OFF
and ON. If problem persists,
use a larger converter or a
smaller device.
Remove the defective device.
Recharge/replace battery.
12V battery is low. Recharge or
replace battery. The converter will
automatically shut off after battery
voltage reaches 10.5 volts.
If in a vehicle, repair/replace
the alternator or charging
system. Use a properly sized
and rated 12 volt battery. If
the input voltage returns to 15
volts or less, the converter will
automatically restart.
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