Troubleshooting - Dvorak SPIDER MINI II Service Manual

2 TROUBLESHOOTING

Problem
No green light illuminates after RC
is turned on
Red light flashes after RC is turned
on
After pressing the confirmation /
horn button a connection between
the RC and the mower is not
established. The mower is
otherwise fully functional.
The mower does not activate after turning on the main switch on the mower
Beacon does not flash (failure of
main electric power supply)
Beacon flashes (electric power is
supplied)
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
Neutral light is illuminated
Neutral light is illuminated.
Starter relay works correctly.
Possible cause
No or empty batteries in the RC
RC failure
Empty RC batteries
The RC does not belong to this
mower.
Signal is interfered with by another
device working on the same
frequency.
Battery is not connected properly or
is empty
Disconnected cables of the mower
electric harness
Main fuse failure
Mower battery is not fully charged
Connection between the RC and the
Control Unit was not confirmed
Control Unit is not properly
connected
Control unit is properly connected,
but the light on the Control Unit is
not flashing.
Communication between RC and
Control Unit was not confirmed.
Drive servomotor is not in the
neutral position.
Check if the drive servomotor lever
is not mechanically blocked (by
debris, sticks etc.)
Light is damaged (does not affect
starting of the mower)
Servo lever does not respond to
joystick movement
No relay clicking sound is audible
from the fuse box when start button
on the RC is pressed
Engine brake is activated
6 / 102
Correction
Insert fully charged batteries into
the RC.
Turn off the RC and turn it on
again. If restart does not help,
contact an authorized service.
Insert fully charged batteries into
the RC.
Check the RC number and Control
Unit number. They must be
identical. Use the correct RC.
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.
Properly connect a fully charged
battery.
Check cables and connectors.
Change the fuse for a new one with
the same value
Charge or replace mower battery
Repeatedly press the RC
confirmation button. Check the RC
functions. See the beginning of this
chapter.
Check the LED light on the Control
Unit. It must flash.
Control unit failure. Contact an
authorized service centre.
Press confirmation / horn button on
the RC
Move drive joystick slightly
forward and backward until neutral
light illuminates.
Release the drive servo lever so
that it can freely move.
Change the LED neutral light
Restart the mower and try again.
Otherwise contact authorized
service
Change the starter relay in the fuse
box.
Release the engine brake by
pressing the lever, which activates
SM-8 Ev3/08072015