Yamaha PW-SE Original Instructions Manual page 21

21
2 Diagnosis mode
The e-Bike Systems are equipped with a diagnosis mode.
If a malfunction or fault occurs in the e-Bike Systems, the
main riding display and "Er" will be shown alternately,
while an error description will inform you of the type of er-
ror in the function display. See "Troubleshooting" regard-
ing symptoms and remedies for abnormal displays and
abnormal flashing.
WARNING
If the problem cannot be solved, have your bicycle in-
spected by a dealer as soon as possible.
15