Husqvarna Automower Technical Manual

Automower from 123
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 of each wheel should be at least
45
cm/seconds. 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 of each wheel should be
at least 45
cm/seconds. 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.
Lower section cable harness 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 motor drive defect 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.
The control box is defective. Replace the control box.
Lower section cable harness 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.
Blade disc blocked Grass or another object may have
become wrapped around the blade disc.
Check the blade disc and remove the grass or other
object.
Table 11: Fault messages
Fault message Cause Action

Husqvarna Automower Specifications

General

Brand	Husqvarna
Model	Automower
Category	Lawn Mower
Language	English