20
Parts & Operations Manual
Labrador
Display Alarms
Alarm
Possible cause
What to do
Brush protector
The brush motor has overheated. Faulty
thermal protector contact on the motors.
Faulty connection.
Wait for the brush motors to cool
down. Replace the brush motor. Check
the connection.
Drive protector
The drive wheel has overheated. Faulty
thermal protector contact on the motor.
Faulty connection.
Wait for the brush motors to cool
down. Replace the brush motor. Check
the connection.
Water reserve
Solution tank almost empty. Stuck
sensor. Faulty sensor or connection.
Fill the solution tank. Clean the level
sensor. Replace the level sensor.
No water
Solution tank empty. Stuck sensor.
Faulty sensor or connection.
Fill the solution tank. Clean the level
sensor. Replace the level sensor. Check
the connection. To resume work, turn the
operation selector to the OFFposition
(reset errors).
Dirty water thank
Dirty water tank full. Stuck sensor.
Faulty sensor or connection.
Empty the dirty water tank. Clean the
level sensor. Replace the level sensor.
Check the connection. To resume work,
turn the operation selector to the OFF
position (reset errors).
Chemical finished
Chem-Dose tank empty. Stuck sensor.
Faulty sensor or connection.
Fill the Chem-Dose tank. Clean the level
sensor. Replace the level sensor. Check
the connection.
Function board not detected
Communication with functions board
interrupted. Faulty auxiliary boards.
Check the connection between the
boards. Check the auxiliary boards.
Battery reserve
Battery voltage less than : 21.9 V GEL/
AGM - 21 V ACID. Flat batteries.
Recharge the batteries. Replace the
batteries.
Call service
The set number of hours for scheduled
service has been reached/exceeded.
Call a service centre to arrange servicing.
Battery charging
The on-board battery charger is
operating, all the machine’s functions are
disabled.
Disconnect the battery charger.
Charging complete
The on-board battery charger is operating,
the charge is complete, all the machine’s
functions are disabled.
Disconnect the battery charger.
O.C. Brush
Excessive motor effort. Faulty functions
board. Brush motor faulty
Check motor load. Replace functions
board. Replace the brush motor.
Drive board temperature
Excessive vehicle effort. Faulty drive
board. Electric brake engaged.
Cool or heat the board. Do not overwork
the machine on long-ramps. Replace
the drive control board. Check
the electric brake.
Accelerator fault
Faulty potentiometer connections.
Faulty potentiometer.
Check the connection.
Replace the potentiometer.
Drive board U.V.
Battery voltage less than 18.3 V GEL/AGM
- 18 V ACID. Flat or degraded batteries.
Charge or replace the batteries.
Relay fault
Faulty relay. Faulty relay connection.
Replace the relay.
Check relay connections.
Electric brake fault
Faulty wiring. Faulty electric brake.
The electric brake has been enabled
in the Technical menu but is not fitted
on the machine.
Check the wiring. Check / replace
the electric brake. Correct the settings
in the Technical Menu.
