Finding Breaks In The Loop Wire - Husqvarna 420 Operator's Manual

9.5 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,
sharp stones that move in the ground can also damage the
wire. Breaks can also be due to the wire being stretched
excessively during installation.
Mowing the grass too short right after the installation can
damage cable insulation. Certain damage to the insulation
may not cause disruptions until several weeks or months
later. To avoid this, 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 cable can also lead to
disruptions first several weeks after the splice was formed.
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 a coupler of lower quality than original coupler
has been used. 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. Therefore, first ensure ECO mode has been shut
down, see 6.9 Settings on page 61.
1. Make sure the indicator lamp in the charging
station flashes blue, which indicates a break in
the boundary loop. Refer to 9.3 Indicator Lamp in
Charging Station page 84.
2. Check that the boundary wire connections to the
charging station are properly connected and not
damaged. Check that the indicator lamp in the
charging station is still flashing blue.
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