Symptoms Cause Action
The robotic lawnmow-
er vibrates.
Damaged blades lead to imbalance in the
cutting system.
Inspect the blades and screws and replace
them if necessary. See
To replace the blades
on page 44
.
Too many blades in the same position lead to
imbalance in the cutting system.
Check that only one blade is fitted at each
screw.
Different versions (thickness) of Husqvarna
blades are used.
Check if the blades are of different versions.
The robotic lawnmow-
er runs, but the blade
disc does not rotate.
The robotic lawnmower searches for the
charging station.
No action. The blade disc does not rotate
when the robotic lawnmower is searching for
the charging station.
The robotic lawnmow-
er mows for shorter
periods than usual
between charges.
Grass or other foreign object blocks the blade
disc.
Remove and clean the blade disc. See
Clean
the robotic lawnmower on page 43
.
The battery is spent. Replace the battery. See
Battery on page 44
.
Both the mowing and
charging times are
shorter than usual.
The battery is spent. Replace the battery. See
Battery on page 44
.
The robotic lawnmow-
er is parked for hours
in the charging sta-
tion.
The robotic lawnmower is parked due to a
timer setting, or because
Park until further no-
tice
has been chosen in the app.
Open the app and edit the timer settings, or
go to
Dashboard
and start the robotic lawn-
mower.
The robotic lawnmow-
er often moves in cir-
cles or spirals.
Spiral cutting is a natural part of the robotic
lawnmower's movement patter.
Adjust the intensity of spiral cutting. This
function can be disabled if necessary. See
Spiral cutting on page 27
.
The robotic lawnmow-
er turns round and
stays on a small area
for several minutes.
This is completely normal for Automower
®
520 and Automower
®
550 with GPS assisted
navigation, and contributes to an even result.
No action.
6.7 Finding breaks in the loop wire
Breaks in the loop wire are usually the result of
unintentional physical damage to the wire such as when
gardening with a shovel. In countries with ground frost,
also sharp stones that move in the ground can damage
the wire. Breaks can also occur due to the wire being
stretched excessively during installation.
Mowing the grass too low right after the installation can
damage wire insulation. Damage to the insulation may
not cause disruptions until several weeks or months
later.
CAUTION: Always select the maximum cutting
height the first weeks after installation and then
lower the height one step at a time every
second week until the desired cutting height has
been reached.
A defective splicing of the loop wire can also lead to
disruptions several weeks after the splice was done. A
faulty splice can, for example, be the result of the
original coupler not being pressed together hard enough
with a pair of pliers, or that a coupler of lower quality
than the original coupler has been used.
Note: Please first check all known splices before further
troubleshooting is done.
A wire break can be located by gradually halving the
distance of the loop where the break may have occurred
until there is only a very short section of the wire left.
The following method does not work if
ECO mode
is
activated. Make sure first that
ECO mode
is turned off.
See
ECO mode on page 27
.
1. Check that the indicator lamp in the charging station
flashes blue, which indicates a break in the
boundary loop. See
LED indicator lamp on the
charging station on page 50
.
52 - Troubleshooting 362 - 002 - 06.02.2018
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