Symptom Cause Action
Both the mowing and charging
times are shorter than usual
Lower battery capacity. Perform a battery test to determine the
battery’s capacity. Refer to
Battery test
on page 45
.
The product travels in a small
circle or one wheel locks up
when turning instead of rotat-
ing backwards.
The wheel motor’s gearbox is slipping. Check the wheel motors’ function when
idling. The battery voltage should be
more than 18 V in this test. Check that
both wheel motors start with 50% power.
Then increase the power to 100%. At
100% the speed of each wheel should
be at least 35 cm/second. Check that
the motors’ gearboxes are not slipping by
blocking each wheel. In connection with
blocking the speed should be 0 cm/sec-
ond. Replace the wheel motor if there is
a fault.
The product does not react
when pushing the STOP but-
ton
An object or dirt under the STOP button. Remove the object or clean under the
STOP button.
8.2.2 Symptoms during searching
Symptom
Cause Action
The product runs, but the
blade disc does not rotate
The product is searching for the charging
station. The blade disc does not rotate
when the product is searching for the
charging station.
This behaviour is normal and no action is
required.
The product does not find the
guide wire when it is searching
for the charging station.
The guide loop is broken. Check the guide signal, as well as the
settings for following the guide wire. Re-
fer to
Tools - Info on page 8
.
8.2.3 Symptoms during docking
Symptom
Cause Action
The product detects the F sig-
nal, but cannot dock
Dirt/leaves/grass in the charging station
is preventing the product’s charging strip
from making contact with the charging
station’s charging strip.
Clean the charging station.
Malfunction in the charging station's cir-
cuit board or in the F-wire.
Replace the charging tower (includes a
new circuit board). Refer to
To replace
the charging tower on page 28
.
The product drives straight in-
to the charging station
The product cannot detect the F field and
therefore does not turn in front of the
charging station.
Check the LED on the charging station
and the instructions about how to trouble-
shoot the loop signal. Refer to
Loop sig-
nal on page 43
.
42 - Troubleshooting 1413 - 003 - 17.01.2022
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