Yamaha PW45 Original Instructions Manual page 40

TROUBLESHOOTING
Symptom
The speedometer
displays "Er".
The assist mode
indicator and battery
capacity indicator
flash rapidly
alternately.
The display unit shuts
down immediately
(approx. 4 seconds
later) after switching
the power on.
Traveling range has
decreased.
The assist mode
indicators are
flashing.
S-Pede Kit Manual (2016).indd 37
Check
Are the bicycle's battery
pack connection
terminals dirty?
Are you fully charging
the battery pack?
Are you using the
system under low-
temperature
conditions?
Is the battery pack worn
out?
37
Action
There could be a problem inside the
Drive Unit is malfunctioning.
Turn on the power to the display unit and
then leave it alone for 5 minutes. All
indicators will turn off automatically. Turn
the power on again.
Remove the battery pack, clean the
bicycle's terminals with a dry cloth or
cotton swab, and then install the battery
pack again.
Charge the battery pack until full (F).
Normal traveling range will be restored
when the ambient temperature rises.
Additionally, storing the battery pack
indoors (in a warm location) before use
will improve traveling range under cold
conditions.
Replace the battery pack.
These indicators will flash when the
speed sensor is unable to detect a
correct signal.
Turn off the power to the display unit and
then turn it on again, select the assist
mode and then ride for a short distance.
Also, make sure the magnet is mounted
correctly on the spokes of the wheels.
2015/06/24 9:22:14