24
4445103620
Troubleshooting
Fault
Possible cause
Suggested remedy
The battery control booster
does not work. The green
“Power” LED does not light
up.
Insulation faults, breaks or loose con-
nections 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 battery control booster
does not work. The yellow
“Main Charging” LED
flashes.
Over voltage protection of the house
battery. Battery voltages too high
(> 15.5 V).
➤
Reduce the connected voltages
(< 12.75 V).
➤
Reset the device by removing the con-
trol signal at D+/ terminal 15. Switch
off the motor and disconnect the
device from the mains.
Over voltage protection of the starting
battery. Battery voltages too high
(> 16.5 V).
➤
Reduce the connected voltages.
The battery control booster restarts auto-
matically when the voltage drops to the
restart value (< 16.5 V).
Connection of defective charging sys-
tems.
➤
Check and remove defective
charging systems if necessary.
Only LiFePO4 batteries: Temperature
sensor is not connected.
➤
Connect the temperature sensor.
Unusually long charging
time. The yellow “Batt. I” LED
flashes.
High temperature protection: The bat-
tery control booster switches to
reduced charging voltage (12.8 V)
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 battery control booster returns auto-
matically to full charging voltage when the
temperature drops to the restart value
(<48 °C).
Low temperature protection (only for
LiFePO4 batteries): The battery control
booster switches to reduced charging
voltage (12.8 V) when the temperature
of the battery drops below the cutoff
value (< 20 °C).
➤
Move the battery to a warmer loca-
tion.
The battery control booster returns auto-
matically to full charging voltage when the
temperature exceeds the restart value
(>18 °C).
Unusually long charging
time. The yellow “Batt. I” LED
flashes slowly.
Low temperature protection (only for
LiFePO4 batteries): The battery control
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 location
(>0 °C).
The battery control booster restarts auto-
matically when the temperature exceeds
the restart value (>0 °C).
