Problem Possible cause Step Troubleshoot
Action
The products stops
when it is operated,
the warning indicator
flashes.
Warning indicates 3:
Cutting motor over-
current alarm.
1
Operate the product without put-
ting a load on the blade.
The product stops if the
load is more than 30A.
2
Make sure that the blade is not
blocked and that it can rotate
freely. WARNING: Turn the safe-
ty key to 0, remove the safety
key, remove the battery and wait
a minimum of 5 seconds before
you touch the blade!
Make sure that the blade
rotates freely, replace
blade or blade support if
defective.
Warning indicates 4:
Cutting motor MOS-
FET breakdown or
short circuit.
1
Cutting motor >70A. WARNING:
Turn the safety key to 0, remove
the safety key, remove the bat-
tery and wait a minimum of 5
seconds before you touch the
blade!
Replace the motor if defec-
tive.
2
If Main controller MOSFET
breakdown, no troubleshooting
possible.
Replace the control unit if
defective.
Warning indicates 5:
Cutting motor low
speed alarm.
1
Operate the product with less
load on the blade.
Adjust the cutting height.
Warning indicates 6:
Drive motor overcur-
rent alarm (only LC
347VLi)..
1
The transmission is operating too
heavily.
The drive stops if drive load
is more than 6A. Make sure
that the rear wheels can ro-
tate freely.
Warning indicates 7:
Drive motor MOSFET
breakdown or short
circuit (onlyLC
347VLi).
1
Transmission >30A. Replace the transmission if
defective.
2
If the main controller MOSFET
break down, no troubleshooting
possible.
Replace the control unit if
defective.
Warning indicates 8:
Low voltage alarm.
1
Battery out of power. Charge the battery.
Warning indicates 9:
Battery shutdown ac-
tive alarm.
1
Battery overheated. Let battery cool down be-
fore use.
Warning indicates 10:
Main controller heat
sink high temperature
alarm.
1
The the main controller unit is
overheated, let the product be-
come cool and try again after 15
minutes.
No action, the behaviour is
correct.
The LED indicators
on the control panel
does not work.
The control panel is
defective.
1
Do a visual inspection. Replace the control board if
defective.
Wiring fault.
1
Check wiring according to wiring
diagram
Replace defective wiring.
The main controller
unit is defective.
1
No troubleshooting possible. Replace the control unit if
defective.
361 - 001 - Troubleshooting - 37
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