Husqvarna AUTOMOWER 420 Operator's Manual page 48

POWER
AR
G
3. Switch the connections between the guide wire
and the boundary wire in the charging station.
Start by switching connection and .
If the indicator lamp has a solid green light, then
the break is somewhere on the boundary wire
between and the point where the guide wire is
connected to the boundary wire (thick black line in
the illustration).
G
Guide
To rectify the fault you will need boundary wire,
connector(s) and coupler(s):
a) If the suspected boundary wire is short then it is
easiest to exchange all of the boundary wire
between and the point where the guide wire is
connected to the boundary wire (thick black line).
b) If the suspected boundary wire is long (thick
black line) then do as follows: Put and back to their
original positions. Then disconnect . Connect a
new loop wire to . Connect the other end of this
new loop wire at the middle of the suspected wire
section.
48 - Troubleshooting
AL
AL
AR
If the indicator lamp now is green, then the break is
somewhere in the wire between the disconnected
end to the point where the new wire is connected
(thick black line below). In that case, move the
connection for the new wire closer to the
disconnected end (roughly at the middle of the
suspected wire section) and check again if the
indicator lamp is green.
1201 - 005 - 19.03.2021