6.4 Symptoms
If your robotic lawnmower does not work as expected, follow the troubleshooting guide below.
There is a FAQ (Frequently Asked Questions) on www.gardena.com which provides more detailed answers to a
number of standard questions. Contact your local GARDENA representative if you still cannot find the reason for the
fault.
Symptoms
Cause
Action
The robotic lawnmow-
er has difficulty dock-
ing.
The boundary wire is not laid in a long
straight line that is far enough out from the
charging station.
Check that the charging station has been in-
stalled according to the instructions in
Laying
the boundary wire on page 16
The guide wire is not inserted in the slot at
the bottom of the charging station.
It is absolutely critical for operation that the
guide wire is perfectly straight and is in the
correct position under the charging station.
Therefore make sure that the guide wire is al-
ways in its slot in the charging station. See
Laying and connecting the guide wire on
page 18.
The charging station is on a slope.
Place the charging station on a surface that is
entirely level. See
Charging station on page
11.
Uneven mowing re-
sults.
The robotic lawnmower works too few hours
per day.
Increase the mowing time. See
Timer on
page 21.
The
Proportion setting is incorrect in relation
to the layout of the working area.
Check that the correct
Proportion value is se-
lected.
The shape of the working area requires the
use of both
Remote start 1 and Remote start
2 for the robotic lawnmower to find its way to
all remote areas.
Also use
Remote start 2 to steer the robotic
lawnmower to a remote area. See
Remote
start 2 on page 25. Applies to GARDENA
R70Li, R80Li only.
Working area too large.
Try limiting the working area or extending the
working time. See
Timer on page 21.
Dull blades.
Replace all the blades and screws so that the
rotating parts are balanced. See
Replace the
blades on page 37.
Long grass in relation to the set cutting
height.
Increase the cutting height and then succes-
sively lower.
Accumulation of grass by the blade disc or
around the motor shaft.
Check that the blade disc rotates freely and
easily. If not, screw off the blade disc and re-
move grass and foreign objects. See
Clean
the robotic lawnmower on page 37.
The robotic lawnmow-
er runs at the wrong
time
The robotic lawnmower clock needs to be set. Set the clock. See
Time & Date on page 27.
The start and stop times for mowing are in-
correct.
Reset the start time and stop time settings for
mowing. See
Time & Date on page 27.
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
Replace the blades
on page 37.
Many blades in the same position lead to im-
balance in the cutting system.
Check that only one blade is fitted at each
screw.
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.
44 - Troubleshooting
303 - 001 - 21.09.2017
