Yamaha PW-SE, Original Instructions Manual

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50
M. Troubleshooting
E-Bike Systems
Symptom Check Action
Pedaling is difficult.
Is the display
unit’s power on?
Press the power switch on
the display unit to turn the
power on.
Is the battery
pack installed?
Install a charged battery
pack.
Is the battery
pack charged?
Charge the battery pack.
Has the bicycle
remained
stationary for 5
minutes or
longer?
Turn the power on again.
Are you riding
on a long
inclined road or
carrying a heavy
load during
summertime?
This is not a malfunction. It
is a safeguard engaged
when the temperature of
the battery pack or the
Drive Unit is too high.
Power assist will be
restored once the
temperature of the battery
pack or the Drive Unit has
decreased. Also, you can
make this less likely to
occur by shifting to a lower
gear than you would
usually use (for example,
by shifting from second to
first gear).
Is the air
temperature low
(roughly 50 °F
(10 °C) or
below)?
During the wintertime,
store the battery pack
indoors before use.
Are you
charging the
battery pack
while it is
mounted on the
bicycle?
Stop charging the battery
pack.
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Symptom Check Action
The Drive Unit turns on and off while
riding.
Is the battery
pack correctly
installed?
Check to make sure the
battery pack is locked in
place.
If this problem still occurs
with the battery pack firmly
locked in place, there may
be a loose connection with
the battery pack terminals
or wires. Have an
authorized dealer inspect
your bicycle.
Strange rumbling or crunching noises
come from the Drive Unit.
There could be a problem
inside the Drive Unit.
Have an authorized dealer
inspect your bicycle.
Smoke or unusual odor comes from the
Drive Unit.
There could be a problem
inside the Drive Unit.
Have an authorized dealer
inspect your bicycle.
(Display A)
The main riding display and “Er” are
displayed alternately, and an error
description is indicated in the function
display.
(Display X)
The assist mode lamp lights up in red, the
main riding display and “ER” are displayed
alternately, and an error description is
indicated in the function display.
Displays alternately
Error displays
The problem occurs in the
e-Bike Systems. Turn off
the power and then turn it
on again.
If the problem cannot be
solved, have your bicycle
inspected by a dealer as
soon as possible.
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