Yamaha NAVIGO Owner's Manual page 119

Problem LCD Indication
Shortage of power
Buzzer sounds
continuously
Short travel range,
or insufficient
speed
Sluggish manual
travel
Assistant brakes
do not work
Assistant brakes
pull to one side
Brakes squeal
Abnormal vibration
or noise
Buzzer
Beeps (Pi —)
Is there a large load being applied?
repeatedly
Is there a large load being applied, causing
the motor to overheat?
Beeps (Pi) re-
peatedly
Is the ambient temperature low?
Is the battery stored in a place where the
temperature becomes hot, such as inside a
car?
Has the battery deteriorated?
Beeps (Pi Pi Pi
Is the battery residual capacity sufficient?
Pi) (4 times)
Beeps (Pi Pi — Pi
Is the anti-tip device retracted?
Pi —) repeatedly
Is the battery sufficiently charged?
Is the ambient temperature low?
Is the wheelchair carrying heavy loads or
driving uphill?
Is the speed parameter set to the standard
setting?
Is the speed setting set to a low speed set-
ting?
Is the air pressure of the tires too low?
Are the brakes engaged on the wheelchair? Release the brakes.
Does the brake lever have too much play?
Are both brakes adjusted evenly?
Are the brake drums damaged or are the
brake shoes worn out?
Have the brakes been applied for a long
time?
Is the area where the axle is mounted loose? Tighten it or contact your dealer.
Is there noise coming from the drive unit?
Is the wheelchair frame or front casters
wobbling?
Check Point
It will stop beeping once the load is re-
duced.
Lighten the load so that the motor will not
overheat.
The battery power decreases when the
battery temperature is 23°F or lower or
140°F (–5°C or lower or 60°C) or higher.
Wait until the battery reaches an appropri-
ate temperature.
Replace with a new battery. For a nickel
metal hydride battery, try refresh charging.
Promptly move to a safe place, turn off
power and charge the battery, or replace
with a spare battery (sold separately).
Extend the anti-tip device.
Replace with a new battery. For a nickel
metal hydride battery, try refresh charging.
The battery power decreases when the
temperature drops.
Heavy loads tend to shorten the travel
range.
Contact your dealer.
Adjust it to a higher speed setting.
Inflate the tires.
Contact your dealer.
Contact your dealer.
Contact your dealer.
The brakes can make a noise depending
on how they are applied, but this is not
abnormal.
Contact your dealer.
Contact your dealer.
What to Do
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