4445103618 29
Troubleshooting
Fault Possible cause Suggested remedy
The charging booster does
not work. The red “Power”
LED does not light up.
Insulation faults, breaks or loose connec-
tions at the live cables.
➤ Check live cables for insulation faults,
breaks or loose connections.
➤ If you cannot find an error, contact an
authorized service agent.
Short circuit has been generated. The device fuse must be replaced by an
authorized service agent after it has been
triggered by excess current.
The charging booster does
not work. The yellow
“Main Charging” LED
flashes.
Over voltage protection of the house bat-
tery. Battery voltages too high (> 15.5 V).
➤ Reduce the connected voltages.
The AC/DC charger combination restarts
automatically when the voltage drops to
the restart value (< 13.2 V).
Connection of defective charging sys-
tems.
➤ Check and remove defective
charging systems if necessary.
Only LiFePO4 batteries: Temperature sen-
sor is not connected.
➤ Connect the temperature sensor.
The charging booster does
not work. All LEDs are flash-
ing simultaneously.
Charging program is not set correctly for
the battery used.
➤ Check the setting of the charging
program (see chapter “Setting the
charging program” on page 26).
Unusually long charging
time. The yellow “Batt. I”
LED flashes.
High temperature protection of the house
battery: The charging booster switches to
reduced charging voltage (12.8 V) and the
maximum charging current is halved when
the temperature of the battery exceeds the
cutoff value (> 50 °C).
➤ Check that the air inlets and outlets
are not covered or obstructed.
➤ Allow the battery to cool down.
The charging booster returns automati-
cally to full charging voltage and current
when the temperature drops to the
restart value (< 48 °C).
Unusually long charging
time. The yellow “Batt. I”
LED flashes slowly.
Only LiFePO4 batteries: Low temperature
protection of the house battery. The
charging booster switches to reduced
charging current when the temperature of
the battery drops below the cutoff value
(< 0 °C).
➤ Move the battery to a warmer loca-
tion (> 0 °C).
The charging booster restarts automati-
cally when the temperature exceeds the
restart value (> 0 °C).
Unusually long charging
time. The yellow “Batt. II”
LED flashes.
Over voltage protection of the starting
battery. Battery voltage too high
(> 16.5 V).
The charging booster restarts returns
automatically to full charging current
when the voltage drops to the restart
value (< 16.5 V).
Unusually long charging
time. The yellow “Batt. II”
LED flashes. The red
“Power” LED flashes
slowly.
Low voltage protection of the starting bat-
tery. Battery voltage too low (> set value
for “increase of charging power”, see
chapter “Setting the operating mode” on
page 27). The charging booster switches
to reduced charging current (<30 %) to
protect the battery.
The charging booster restarts returns
automatically to full charging current
when the voltage rises to the restart value
(set value for “reduction of charging
power”, see chapter “Setting the operat-
ing mode” on page 27).
To Next Page
Loading...