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SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Part No. 1125075 27 Pronto® Series
Battery
Motor is running
then fails to restart
when stopped.
Heavy load on the motors forcing
controller into the current rollback
mode.
Leave power On and allow controller to count
down, and recharge the batteries overnight with
power On.
Blown fuse in battery wiring
harness.
Replace battery wiring harness. Refer to
Connecting/Disconnecting Battery Cables
on
page 101.
Damaged motor. Replace brushes if necessary, or replace
motor/gearbox if internal damage is determined.
Refer to Replacing Motor Brushes
on page 116 or
Removing/Installing the Motor
on page 112.
Ohm out motor to check for possible internal
damage (worn out brushes may be possible).
Refer to Motor Testing
on page 31 or Replacing
Motor Brushes on page 116.
Controller power stage board or
relays may be damaged.
Replace controller or send to Invacare for repair.
Refer to Replacing the Controller
on page 125.
Motor runs but
loses power.
Controller senses heavy load and
has entered the current rollback
mode.
Stop driving and let electronics cool.
Batteries are going bad. Replace batteries. Refer to Removing/Installing
Batteries from/into Battery Tray on page 99.
Wheelchair loses
all power while
driving.
Bad Connection on wheelchair. Turn power “Off”, wait 10 seconds and turn
power back “On”.
Check joystick connection.
Check battery connection and fuses.
SYMPTOM PROBABLE CAUSE SOLUTIONS
Batteries won’t
charge.
Blown battery fuse or damaged cables.
Batteries sat discharged too long.
Check cables for damage or replace battery wiring
harness. Refer to Connecting/Disconnecting
Battery Cables on page 101.
Replace batteries. Refer to Removing/Installing
Batteries from/into Battery Tray on page 99.
Short Charge Time
One or both batteries may be bad (if
batteries charge up to soon).
Check each battery and replace if needed. Refer to
Removing/Installing Batteries from/into Battery
Tray on page 99.
SYMPTOM PROBABLE CAUSE SOLUTIONS