19. Troubleshooting
If no display comes up after connection to the input, check for correct input polarity.
Disconnect all cables to the unit and check the input fuse.
The LED will display an error code when the converter is in any protection mode.
The following table denotes the 8 Error Codes.
Error Code
Description
F01
Over Temperature Protection (Self-restart)
When unit’s internal temperature becomes higher than the threshold value, unit shuts down the
output. Unit will resume normal operation automatically once the temperature becomes normal.
F02
Output Over Voltage Protection (Self-restart)
In DC-DC Converter Mode, output shuts down when the output voltage is 15% higher than the
preset voltage level. Unit will self-restart when the output voltage falls 1V below the preset
level.
In the Bulk Charge Stage of Charger Mode, the unit shuts down >16V and restarts when the
voltage <15.5V.
In Float Charge Stage it shuts down when voltage >15.1V and restarts at < 14.6V.
F03
Over Load Protection (Self-restart)
When the Output current is 2 Amp higher than 20A, the unit will shut down the output.
The unit will self-
restart once the output current falls back to unit’s rated value.
F04
Fan Fault (Self-restart)
When the fan does not operate normally, the unit will shut down the output. Unit will resume
normal operation once the fan fault condition has been removed.
F05
Input Low Voltage Protection (Self-restart)
Input V
<
42V
Alarm signal On
Input V
>
50V
Alarm signal Off
35V
<
Input V
<
38V for 3 min.
Output shuts down; self-restart > 50V
Input V
<
35V
Output instant shut down; self-restart >50V
F06
Output Short Circuit Protection (Self-restart)
Unit shuts down output when the output is short circuited.
It will self-restart when the fault condition is removed.
F07
Output battery terminal reverse polarity protection
Fuse will be blown when the output is reverse polarity connected to the battery.
Replace the fuse with correct type and rating.
F08
Input over voltage protection (Self-restart)
Output shuts down when the input voltage is higher than 64V.
It will self-restart when the input drops below 61V.
