Battery Test - Husqvarna Automower 420 Technical Manual

is somewhere in the boundary wire
between AL and the position where the
guide wire is connected to the boundary
wire (thick black line in illustration A).
If the LED is flashing yellow in test
b) then the break is somewhere in
the boundary wire between AR and
the position where the guide wire is
connected to the boundary wire (thick
black line in illustration B).
5. Reset all connections to their original
positions. Then disconnect AR. Connect
a new loop wire to AR. Connect the other
end of this new loop wire somewhere at
the center of the installation. If the LED
turns green then the break is somewhere
in the section between the disconnected
end and the position where the new wire
has been connected (thick black line in
illustration C). If that is the case, move
the connection for the new wire closer to
the disconnected end (approximately in
the middle of the suspected section) and
check again whether the LED has turned
green. Continue until only a very short
section of the wire remains which is the
difference between a flashing blue light
and a solid green light.
6. When the break is found, the damaged
section must be replaced with a new
wire. The damaged section can be
cut out if it is possible to shorten the
boundary wire. Use only original couplers
from Husqvarna.

6.6 Battery test

If the mower's battery starts to perform poorly, the
robotic lawnmower will mow for shorter time peri-
ods. The mower can also stop and show the Low
battery voltage message. To establish whether
the battery is functioning unsatisfactorily a battery
test is recommended.
A battery test is also recommended in connection
with the mower's winter service. An inferior bat-
tery can then be replaced before the next season
starts.
6.6.1 Performing a battery test
1. Checking the battery's capacity requires
that the battery is completely flat. Use
manual operating mode and fully charge
the battery. When charging commences
the battery temperature should not be
more than 40ºC.
English - 98
6. TROUBLESHOOTING
B
AL
AL
Guide1
Guide1
AR
AR
C
AL
AL
AR
AR