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SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
At’m and At’m QT 24 Part No. 1125078
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 wheelchair overnight with
power ON.
Blown fuse in battery wiring
harness.
Replace battery wiring harness.
Damaged Motor Replace brushes if necessary, or replace motor if
internal damage is determined.
Ohm out motor to check for possible internal
damage (worn out brushes may be possible).
Refer to Electro-Mechanical Parking Brake Test
on page 29.
Controller power stage board or
relays may be damaged.
Replace controller or send to Invacare for repair.
Motor runs but
loses power.
Controller senses heavy load and
has entered the current rollback
mode.
Stop driving and let electronics cool.
Leave power ON and allow controller to count
down, and recharge the wheelchair overnight with
power ON.
Wheelchair loses all
power while
driving.
Bad connection on wheelchair. Turn power “OFF”, wait ten seconds and turn
power back “ON”.
Check joystick connection.
Check battery connections and circuit breaker.
Power indicator off
- even after
recharging.
Electrical malfunction. Contact Invacare for service.
SYMPTOM PROBABLE CAUSE SOLUTIONS