SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Pronto® M71™ 24 Part No 1118377
Wheels
Troubleshooting - CommonTroubleshooting - Motor/Gearbox/Brake
WHEELCHAIR VEERS
LEFT/RIGHT
SLUGGISH TURN/
PERFORMANCE
CASTERS
FLUTTER
SQUEAKS AND
RATTLES
LOOSENESS
IN WHEELCHAIR
WHEELCHAIR 3
WHEELS
SOLUTIONS
X X X If pneumatic, check tires for correct and equal pressure.
X X X X Check for loose stem nuts/bolts.
X X Check that casters contact ground at the same time.
SYMPTOM PROBABLE CAUSE SOLUTIONS
E28 Error code.
Charger still plugged in when user
tries to drive the wheelchair.
Unplug charger to drive wheelchair.
Manual recliner, Power tilt and/or
recline is in reclined position and
drive lockout is engaged
To disengage drive lockout, return seat to upright
position.
No LED’s on DPJ/
SPJ Joystick
Batteries discharged.
Fuse Open
Loose Battery Terminal
Plug connections back together, and check for
damaged wiring.
SYMPTOM PROBABLE CAUSE SOLUTIONS
Motor makes a
clicking noise.
Bad coupler between motor and
gearbox or bad bearings.
Replace coupler or replace motor.
If bearings are bad, replace motor.
Raised commutator plate inside of
motor.
Ohm out motor and replace motor if high reading
is present. Normal reading is 0-5 Ohms.
Grinding noise or
motor is locking up.
Bad gearbox.
Bad coupler between motor and
gearbox or bad bearings. Bad Gears.
Replace gearbox or motor.
Replace coupler mor motor.
If bearings are bad, replace motor.
Motors stall and
starts up again.
Current Rollback. Stop driving and let electronics cool.
Wheelchair will not
drive with power
on (E09 or E10).
Check motor locks. Engage motor locks to drive wheelchair.