Husqvarna Automower 305 Operator's Manual page 46

Continue until only a very short section of the wire
remains which is the difference between a solid
green light and a flashing blue light. Then follow
instruction in step 5 below.
4. If indicator lamp still flashes blue in step 3
above: Put AL and GUIDE back in their original
positions. Then switch AR and GUIDE. If indicator
lamp now is lit with a solid green light then
disconnect AL and connect a new boundary wire
to AL. Connect the other end of this new wire at
the middle of the suspected wire section. Follow
the same approach as in 3a) and 3b) above.
5. When the break is found, the damaged section
must be replaced with a new wire. Always use
original couplers.
46 - Troubleshooting 1462 - 008 - 20.02.2023