Symptoms - Husqvarna AUTOMOWER 420 Operator's Manual

6.5 Symptoms

If your product does not work as expected, follow the symptoms guide below.
There is a FAQ (Frequently Asked Questions) on www.husqvarna.com which provides more detailed
answers to a number of standard questions. Contact Husqvarna customer service if you still cannot find
the reason for the fault.
Symptoms Cause
The product has The guide wire is not laid in a long
difficulty docking. straight line that is far enough out from
the charging station.
The guide wire is not inserted in the
slot under the charging station.
The charging station is not on a level
surface.
The product runs The clock or the date in the product is
at the wrong time not correct.
The start and stop times for mowing
are incorrect.
The product vi- Damaged blades lead to imbalance in
brates. the cutting system.
Too many blades in the same position
lead to imbalance in the cutting system.
Different versions (thickness) of blades
are used.
The product runs, The product searches for the charging
but the blade disc station, or is reversing out of the charg-
does not rotate. ing station.
The product mows Grass or other foreign object blocks the
for shorter periods blade disc.
than usual be-
tween charges.
The battery is spent.
Dull blades. More energy is needed
when cutting the grass.
1201 - 004 - 25.03.2020
Action
Check that the charging station has
been installed according to the instruc-
To examine where to put the
tions in
boundary wire on page 17
Make sure that the guide wire is in the
correct position below the charging sta-
tion. Refer to To install the guide wire
on page 23 .
Place the charging station on a surface
that is entirely level. Refer to
ine where to put the charging station on
page 16 .
Set the clock or date. Refer to
the time & date on page 34 .
Schedule settings. Refer to
Change the
Schedule on page 26 .
Inspect the blades and screws and re-
place them if necessary. Refer to
place the blades on page 43 .
Check that only one blade is fitted at
each screw.
Check if the blades are of different ver-
sions.
No action. The blade disc does not ro-
tate when the product is searching for
the charging station.
Remove and clean the blade disc. Re-
Chassis and blade disc on page
fer to
42 .
Replace the battery. Refer to
on page 43 .
Replace the blades. Refer to
the blades on page 43 .
Troubleshooting - 55
To exam-
To set
Re-
Battery
Replace