Fault Symptom, Loop System - Husqvarna Automower Solar Hybrid Technical Manual

Table 9: Fault symptom, General
Symptom
The background lighting on
the display is on, but the
keypad and main switch do
not react.

6.3 Fault symptom, Loop system

For more information about The loop system, see 1.10
Loop signal strength, page 15 and 1.11 Corridor width,
page 17.
Table 10: Fault symptom, Loop system
Symptom, Loop
system
Automower follows the
boundary wire in a saw
tooth pattern
Automower can not pass
through a narrow opening
or passage when following
the boundary wire.
Automower does not follow
the boundary wire out from
the charging station to a
remote area when it should,
but starts mowing directly.
Automower does not follow
the guide wire out from the
charging station to a
remote area when it should,
but starts mowing directly.
Automower does not run
along the boundary wire
when it searches for the
charging station.
6. TROUBLE SHOOTING
Cause
The control box is blocked.
Cause
Automower does not find the strength on
the loop signal that the set corridor width
corresponds to. Automower now
searches for the strength by running in a
saw tooth pattern along the boundary
wire.
The corridor width is too high for
Automower to pass through the passage.
Automower does not find the strength on
the loop signal that the set corridor width
corresponds to. When Automower does
not detect the strength after reversing out
of the charging station it starts to mow
instead.
Automower does not find the strength on
the loop signal that the set corridor width
corresponds to. When the mower
reverses out from the charging station it
turns a full circle to find the strength.
When Automower does not find the
strength it starts to mow instead.
The set delay time does not permit
Automower to start following the
boundary wire when it searches for the
charging station.
Automower does not find the strength on
the loop signal that the set corridor width
corresponds to. Automower will continue
to search randomly until it detects the
boundary wire again.
Action
1. Reprogram the control box with the help of
Autocheck. Use the Advanced function and download
the program manually. Ignore the Autocheck message
No contact.
2. Should the program not start or it is cancelled
before it is finished, the battery may need to be
charged for a few minutes. However, do not charge it
for more than 10 minutes as the charging/battery's
temperature can not be monitored when the control
box is blocked.
3. Also refer to page 77.
Action
Increase the corridor width until the behaviour stops.
Reduce the corridor width successively until
Automower can pass through the passage. In order to
prevent Automower from running on a small corridor
width, install a guide wire through the passage.
Try a different corridor width, a greater corridor width
usually improves the function. Also check the loop
signal's strength and compare with Table 14 and
Table 15
Check that the guide wire has been routed correctly. It
should be routed at least 130cm straight back, out
from the edge of the charging station. The adjustable
reversing length must be adapted according.
Try a different corridor width, a greater corridor width
usually improves the function. Also check the loop
signal's strength and compare with Table 14 and
Table 15
Check that the set delay time to permit Automower to
start following the boundary wire has elapsed. To
easily check that Automower starts to follow the
boundary wire, the delay time can be set to 0 minutes.
When the working area is large/open and when the
distance between the boundary wire is large, choose a
wider corridor. When the working area is small/narrow
and the distance between the boundary wire is small,
choose a narrower corridor.
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