Display shows (1) „---".
Display (1) shows „Er1".
Display shows (1) „Er2".
Display (1) shows „Er3".
"Error" LED (7) lit
Battery cannot be charged
Long charging time
Battery voltage too low
no battery connected.
Battery voltage below 0.5 V.
Connected battery incompatible.
Connected battery defective.
the battery was not fully charged within
Battery incorrectly/not connected
Incorrect battery voltage (12/24 V) selected
no power supply, charger not plugged in.
Only a very low charging current is used
in very low temperatures (below 0°C).
This will extend the charging time. As the
battery warms up, the charging current is
Battery capacity too high for the charger
Battery wasn't charged long enough.
Connect battery (see "Connecting the
Device"). Unable to charge battery.
Only connected compatible batteries (see
Dispose of battery in an environmentally-
• Verify the charging rate is set correctly.
• Battery defective. Dispose of battery in
an environmentally-friendly manner.
Unplug charger and check the connections.
Unplug charger and wait for the LEDs to
go out. Reconnect the charger and select
the correct battery voltage.
Verify the charger is connected to a 230 V
mains socket. Battery may be defective.
Charge battery in normal conditions.
Never charge frozen batteries.
Use a suitable charger.
Ensure the battery is charged long enough.