Husqvarna 420 Operator's Manual page 91

4. a) Assume that the indicator lamp is lit with a solid
green light in test a) above. 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 indicator lamp 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 in the illustration 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.
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.
b) If the indicator lamp is solid green in test 3b)
above, a similar test is carried out but with the
new loop wire connected to AL instead.
1157866-26,420,430X,450X,EN_160314.indd 89
TROUBLE SHOOTING
3023-044
3023-029
3023-030
English - 89
2016-03-14 17:00:09