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DC-DC CHARGER GUIDE:
Fault Codes
If all battery type selection lights are flashing simultaneously please see
troubleshooting guide below.
There are error codes that may be displayed. These will be displayed in the
following way:
Stage LED S1 S2 S3 S4 Cause Remedy
Solar input
high voltage
X
Output voltage is
detected at solar input
Check solar panel open
circuit voltage
Solar input
reverse
X
Solar input is reversely
connected
Check solar input
connection
Alternator
high voltage
X
Overvoltage is detected at
alternator input
Check vehicle battery
voltage
Alternator
input reverse
X X
Alternator input is
reversely connected
Check alternator input
connection
Output fault
mode
X
Output battery is reversely
connected
Check output cable
connection
Overvoltage is detected
at output
Check auxiliary battery
voltage
Output open circuit or
dead battery
Check auxiliary battery
voltage & cable
connections
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