Husqvarna Automower 420 Workshop Manual page 48

Messages
Number Message
INSTALLATION
15 Mower lifted
13/78 No drive
10 Upside down
50/51/52 Guide not found
55 Difficult finding home
56 Guide calibration ac-
complished
57 Guide calibration failed Guide wire calibration has failed.
48 - Troubleshooting
Cause
The lift sensor has been activated due
to the product getting stuck.
One of the lift senor magnets is inver-
ted or missing.
The lift sensor is faulty.
The product has got caught in some-
thing.
The work area includes a steep slope.
The guide wire is not laid at an angle
on a slope.
The product is leaning too much, or
has turned over.
The product is no longer receiving sig-
nals from the guide wire.
The product has followed the boundary
wire but has not found the charging
station.
Guide wire calibration has been suc-
cessful.
Action
Free the product and rectify the reason.
Check the magnet. Refer to
the lift sensor circuit board on page 31 .
Check the lift sensor. Refer to
place the lift sensor circuit board on
page 31 .
Free the product and rectify the reason
for the lack of drive. If it is due to wet
grass, wait until the lawn has dried be-
fore using the product.
Check the maximum guaranteed slope.
Steeper slopes should be isolated.
Lay the guide wire at an angle across
the slope.
Turn the product the right way up and
rectify the reason.
Check connection of guide wire to
charging station. To locate a break in a
To find a break in the
wire, refer to
boundary loop on page 58 .
Check the boundary wire's corridor
width setting and location. Refer to the
Operator's manual.
No action.
Check that the guide wires are installed
according to instructions. Then carry
out a new calibration. Refer to
Calibrate on page 14 .
To replace
To re-
Tools -
1191 - 001 -