SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

SYMPTOM

PROBABLE CAUSE

SOLUTIONS

 

 

 

 

Low tire pressure.

Inflate tires to the proper tire pressure (30 psi).

 

Motor engagement handles are dis-

Engage motor engagement handles.

 

engaged.

 

Wheelchair will not

Batteries require charging.

Charge batteries. Make sure the setting on the

 

charger is correct.

drive.

 

 

 

 

Charger plugged in.

Unplug charger from wall outlet before operating

 

 

the wheelchair.

 

Circuit breaker tripped.

Press the reset button. Refer to Resetting the Cir-

 

 

cuit Breaker on page 54.

 

 

 

 

Damaged connector or worn

Ohm out motors. Replace motor if high reading is

Motor chatters or

brushes.

present. Normal reading is 0-5 Ohms.Refer to

Bad motor.

Electro-Mechanical Parking Brake Test on

runs erratically, or

 

page 29.

only one motor

 

 

 

turns.

Controller malfunction.

Check for error codes with programmer. Refer to

 

 

 

electronics manual provided.

 

 

 

Wheelchair veers

Uneven tire pressure.

Inflate tires.

to the left or right

 

Replace tires if worn.

when driving on

 

 

level surface.

Motors out of balance.

Use programmer to balance motors.

 

 

 

E09/E10 error code

Bad motor connection.

Check all connections. Ohm out each brake coil.

Bad brake coil.

Normal reading is 45-50 Ohms. Refer to Elec-

will not go away.

 

tro-Mechanical Parking Brake Test on page 29.

 

 

 

 

 

Excessive clicking

Bad bearing in motor.

Replace motor.

 

 

coming from

Loose wheel hardware.

Tighten hardware, (use removable Loctite™ on

motor.

 

hardware). Follow torque settings in this manual.

 

 

 

 

 

Motor stutters.

Poor connection or worn drive

Check drive cylinders and replace if necessary.

cylinder.

 

 

 

 

 

 

Motor fails to start

Battery voltage is too low.

Check batteries and recharge if necessary.

after initial installa-

 

 

tion.

Bad connection.

Check connector.

 

 

 

Only one drive

One motor is disengaged.

Engage motor engagement handle.

 

 

wheel turns.

Electrical malfunction.

Replace motor.

 

 

 

 

Joystick erratic or

Electrical malfunction.

Replace joystick.

 

 

does not respond

Controller programmed improperly.

Reprogram controller. Refer to electronics man-

as desired.

 

ual provided.

 

 

 

 

 

Wheelchair does

Poor battery terminal connection.

Clean the battery terminal connectors.

not respond to

 

 

commands.

 

 

 

 

 

Part No. 1125078

23

At’m and At’m QT

Page 23
Image 23
Invacare 1125078 service manual Damaged connector or worn