108 - English
6. TROUBLE SHOOTING
Left wheel motor blocked
Right wheel motor blocked
The Automower
®
has jammed. Remove the object.
Grass or other object may have become
wrapped around the drive wheel.
Check the drive wheel and remove the grass or other
object.
The wheel motor is defective. Check the function of the wheel motors when free
wheeling via Tools - Test - Power & Motors – Wheel
motors (shortcut 5-2-1-1) or with Autocheck. Check
that both wheel motors start with a force of 50 %. Now
increase the force using Arrow up to 100 %. At 100%
the speed in each wheel should be least 45 cm/second
for the 220 AC and Solar Hybrid, and 70 cm/second for
the 230 ACX and 260 ACX. (The mower should be fully
charged before starting the test. Empty batteries can
produce incorrect values.) Check to make sure that the
motors' gearboxes do not slip by blocking respective
wheels. When blocked the speed should be
0 cm/second. NOTE! When a motor does not start and
is extremely difficult to turn by hand, except from the
wheel motor, the control box may be faulty. See the
cause below. Replace the motor if defective.
The control box is defective. Some control box faults can be discovered with the
help of the wheel motor. Rotate the wheel by hand
and note the resistance. Now remove the cabling from
the motor and rotate the wheel again. If it is easier to
rotate now, the control box is defective and must be
replaced.
Left wheel drive system
defect
Right wheel drive system
defect
The wheel motor is defective. Check the function of the wheel motors when free
wheeling via Tools - Test - Power and Motors – Wheel
motors (shortcut 5-2-1-1) or with Autocheck. Check
that both wheel motors start with a force of 50 %. Now
increase the force using Arrow up to 100 %. At 100%
the speed in each wheel should be least 45 cm/second
for the 220 AC and Solar Hybrid, and 70 cm/second for
the 230 ACX and 260 ACX. (The mower should be fully
charged before starting the test. Empty batteries can
produce incorrect values.) Check to make sure that the
motors' gearboxes do not slip by blocking respective
wheels. When blocked the speed should be
0 cm/second. NOTE! When a motor does not start and
is extremely difficult to turn by hand, except from the
wheel motor, the control box may be faulty. See the
cause above. Replace the motor if defective.
The control box is defective. Replace the control box.
The main cable is damaged or defective. Check the cable harness and connector and check
whether there is a repairable defect. If not; replace the
cable harness.
Blade disc blocked
Blade motor drive defect
Grass or another object may have
become wrapped around the blade disc.
Check the blade disc and remove the grass or other
object.
The blade motor is defective. Check that the blade motor runs at the right speed via
Tools - Test - Power & Motors – Blade motor (shortcut
5-2-1-2). The speed should be about 2,500 rpm. For
260 ACX approximately 1750 rpm applies.
The control box is defective. Replace the control box.
The main cable is damaged or defective. Check the cable harness and connector and check to
see whether there is a repairable defect. If not;
replace the cable harness.
Check ultrasonic The mower has collided with an obstacle
at full speed several times. The mower
continues to mow, but at a reduced speed
(30 cm/second) (12”/second).
Clean the ultrasonic sensors with a dry cloth or
similar. Protect objects that were not detected by the
ultrasound with the boundary wire. For more
information about the ultrasound, see
1.13.4
Ultrasonic sensor (260 ACX) on page 22.
The battery is cooling The temperature of the batteries is too
high when the mower reaches the
charging station.
Turn the main switch off and on. Close the display
cover.
Table 7: Fault messages
Fault message Cause Action
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