Problems / Solutions: Flash Patterns And Their Meaning; No Display; Battery Charge State Indicator Flashing Or Not Visible; Display "E1 - Bosch Dtive Unit Speed Manual Original

8.1 Problems / solutions:
Flash patterns and their meaning
If a problem occurs in the electrical system of your Pe-
delec, you should initially try to solve it by referring to the
following list which describes possible causes of errors
and provides corresponding solutions.
If you cannot solve the problem, consult your specialist
cycle shop.

8.1.1 No display

If nothing is shown in the LCD display, one of the follow-
ing reasons/solutions may apply:
› Is the battery sufficiently charged?
Charge the battery if necessary.
› Is the battery capacity still sufficient?
Check the capacity. If the remaining capacity is not
enough, the battery must be replaced.
Check the actual battery capacity
If you press the "Push" button for longer than five sec-
onds, the LEDs show the capacity of the battery at present.
DISPLAY
5 LEDs light up •••••
4 LEDs light up ••••
3 LEDs light up •••
2 LEDs light up ••
1 LED lights up •
Capacity of 18 Ah battery (example)
CAPACITY
100 – 80%
80 – 60%
60 – 40%
40 – 20%
20 – 0%
8.1.2 Battery charge state indicator flashing
or not visible
If the battery charge state indicator is flashing or not visi-
ble at all, one of the following causes/solutions may apply:
› Is the battery sufficiently charged?
Charge the battery if necessary.
› The second and fourth LEDs of the battery indicator
flash when you press the button on the battery. The
battery management has switched the battery off.
Put the battery in the charger and charge it.
› If you continue to press the button on the battery
(test for battery capacity) and no LED lights up, the
battery management has switched the battery off.
Put the battery in the charger and charge it.

8.1.3 Display "E1"

If "E1" is displayed, the following cause/solution may
apply:
› You have pushed down on the pedals shortly after
pressing the "Power" button. Switch the display off
then switch it back on and do not push down on the
pedals for roughly 2 seconds.
If "E1" is displayed the distance covered will not be
recorded. It will therefore no longer be possible to
adjust the assistance control and the power assist
will no longer work.
II User Manual Fast Pedelec
Error code
21