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SM-8 Ev3/08072015
2 TROUBLESHOOTING
Problem
Possible cause
Correction
No green light illuminates after RC
is turned on
No or empty batteries in the RC
Insert fully charged batteries into
the RC.
RC failure
Turn off the RC and turn it on
again. If restart does not help,
contact an authorized service.
Red light flashes after RC is turned
on
Empty RC batteries
Insert fully charged batteries into
the RC.
After pressing the confirmation /
horn button a connection between
the RC and the mower is not
established. The mower is
otherwise fully functional.
The RC does not belong to this
mower.
Check the RC number and Control
Unit number. They must be
identical. Use the correct RC.
Signal is interfered with by another
device working on the same
frequency.
Turn off the interfering device, get
closer to the mower.
Press and holed the antenna button
on the RC and at the same time
press the horn button to change the
RC channel. Then press the horn
button again.
The mower does not activate after turning on the main switch on the mower
Beacon does not flash (failure of
main electric power supply)
Battery is not connected properly or
is empty
Properly connect a fully charged
battery.
Disconnected cables of the mower
electric harness
Check cables and connectors.
Main fuse failure
Change the fuse for a new one with
the same value
Beacon flashes (electric power is
supplied)
Mower battery is not fully charged
Charge or replace mower battery
Connection between the RC and the
Control Unit was not confirmed
Repeatedly press the RC
confirmation button. Check the RC
functions. See the beginning of this
chapter.
Control Unit is not properly
connected
Check the LED light on the Control
Unit. It must flash.
Control unit is properly connected,
but the light on the Control Unit is
not flashing.
Control unit failure. Contact an
authorized service centre.
Mower cannot be started. Communication between RC and Control Unit is OK. Mower power supply is
OK. Beacon is flashing.
Neutral light is not illuminated
Communication between RC and
Control Unit was not confirmed.
Press confirmation / horn button on
the RC
Drive servomotor is not in the
neutral position.
Move drive joystick slightly
forward and backward until neutral
light illuminates.
Check if the drive servomotor lever
is not mechanically blocked (by
debris, sticks etc.)
Release the drive servo lever so
that it can freely move.
Light is damaged (does not affect
starting of the mower)
Change the LED neutral light
Servo lever does not respond to
joystick movement
Restart the mower and try again.
Otherwise contact authorized
service
Neutral light is illuminated
No relay clicking sound is audible
from the fuse box when start button
on the RC is pressed
Change the starter relay in the fuse
box.
Neutral light is illuminated.
Starter relay works correctly.
Engine brake is activated
Release the engine brake by
pressing the lever, which activates
