Husqvarna Automower Solar Hybrid Technical Manual page 107

Table 8: Fault messages
Fault message
Left wheel motor blocked
Right wheel motor blocked
Left wheel drive system
defect
Right wheel drive system
defect
Blade motor drive defect
Blade disc blocked
6. TROUBLE SHOOTING
Cause
The Automower has jammed.
Grass or other object may have become
wrapped around the drive wheel.
The wheel motor is defective.
The control box is defective.
The wheel motor is defective.
The control box is defective.
Lower section cable harness is damaged
or defective.
The blade motor is defective.
The control box is defective.
Lower section cable harness is damaged
or defective.
Grass or another object may have
become wrapped around the blade disc.
Action
Remove the object.
Check the drive wheel and remove the grass or other
object.
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 of each wheel should be at least
45 cm/seconds (60 cm/seconds for 230 ACX). 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.
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.
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 of each wheel should be at least
45 cm/seconds (60 cm/seconds for 230 ACX). 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.
Replace the control box.
Check the cable harness and connector and check
whether there is a repairable defect. If not; replace the
cable harness.
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.
Replace the control box.
Check the cable harness and connector and check to
see whether there is a repairable defect. If not;
replace the cable harness.
Check the blade disc and remove the grass or other
object.
English - 107