Troubleshooting Schedule - Husqvarna LB 548 i Workshop Manual

8.3 Troubleshooting schedule

Problem Possible cause
The warning indicator shows
the error code 3: Cutting mo-
tor high current alarm.
The warning indicator shows
the error code 4: Cutting mo-
tor MOSFET failure or short
circuit.
The prod-
The warning indicator shows
ucts stops
the error code 5: Cutting mo-
when it is
tor low speed alarm.
operated,
the warn-
The warning indicator shows
ing indica-
the error code 8: Low voltage
tor flash-
alarm.
es.
The warning indicator shows
the error code 9: Battery
shutdown active alarm.
The warning indicator shows
the error code 10: High tem-
perature alarm of heat sink in
the main controller.
The warning indicator shows
the error code 16: Total sys-
tem high current alarm.
8.4 Troubleshooting schedule
Problem Possible cause
The warning indicator shows
the error code 17: Cooling
fan, battery box 1 abnormal
alarm.
The warning indicator shows
The prod-
the error code 18: Cooling
ucts stops
fan, battery box 2 abnormal
when it is
alarm
operated,
the warn-
The warning indicator shows
ing indica-
the error code19: Battery
tor flash-
packet in battery box 1 con-
es.
nection active alarm.
The warning indicator shows
the error code 20: Battery
packet in battery box 2 con-
nection active alarm
36 - Troubleshooting
Step Troubleshooting
Operate the product without load on the
1
blade.
Make sure that the blade is not blocked
and that it can rotate freely. WARNING:
Remove the safety key from the safety lock
2
and put it in the safety key holder. Remove
the battery and wait a minimum of 5 sec-
onds before you touch the blade!
There is too high current in the transmis-
1
sion.
If the primary control MOSFET is out of or-
2
der, no troubleshooting is possible.
Operate the product with less load on the
1 blade.
The battery is out of power.
1
The battery is too hot.
1
The primary control unit is too hot. Let the
product become cool and try again after 15
1
minutes.
Make sure that the blade is not blocked
and that it can rotate freely. WARNING:
Remove the safety key from the safety lock
1
and put it in the safety key holder. Remove
the battery and wait a minimum of 5 sec-
onds before you touch the blade!
Step Troubleshooting
Do a check of the cooling fan in battery box
1. Make sure that it operates when the cut-
1
ting motor is on.
Do a check of the cooling fan in battery box
2. Make sure that it operates when the cut-
1
ting motor is on.
Connection problems between the product
and the battery. Do a check of the yellow
1
wire between battery 1 and the primary
control panel.
Connection problems between the product
and the battery. Do a check of the yellow
1
wire between battery 2 and the primary
control panel.
To do
The product stops if
the load is to high.
Replace the blade
or the blade sup-
port if it is defective.
Replace the motor
if it is defective.
Replace the control
unit if it is defective.
Adjust the cutting
height.
Replace the control
unit if it is defective.
Let battery cool
down before use.
N/A
Replace the blade
or the blade sup-
port if it is defective.
To do
Replace the cooling
fan assembly.
Replace the cooling
fan assembly.
Replace the wires
to the batteries or
the primary control
panel.
Replace the wires
to the batteries or
the primary control
panel.
1410 - 001 -