Yamaha PW SYSTEM Manual page 84

Symptom
(Display A)
The main riding display and "Er" are
displayed alternately, and an error code is
indicated in the function display.
(Display B)
The main riding display and "Er" will be
shown alternately, and an error message
relating to the battery pack error will be
shown on the function display.
Check
The problem occurs in the
Battery Pack. Turn off the
power and then turn it on
again. If the problem
cannot be solved, have
your Battery Pack
inspected by a dealer as
soon as possible.
84
Action