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USER MANUAL
ENGLISH
26
DRIVE MOTOR ERROR INDICATOR INFORMATION
LED CODES FAULT POSSIBLE CAUSE
1.1 ¤ ¤ THERMAL FAULT
1. Temperature >80°C or < -10°C.
2. Excessive load on vehicle.
3. Operation in extreme environments.
4. Electromagnetic brake not releasing.
1.2 ¤ ¤¤ THROTTLE FAULT
1. Throttle input wire open or shorted.
2. Throttle pot defective.
3. Wrong throttle type selected.
1.3 ¤ ¤¤¤ SPEED POT FAULT 1. Speed limit pot wire(s) broken or shorted.
2. Broken speed limit pot.
1.4 ¤ ¤¤¤¤ UNDERVOLTAGE FAULT 1. Battery voltage <17 volts.
2. Bad connection at battery or controller.
1.5 ¤ ¤¤¤¤¤ OVERVOLTAGE FAULT
1. Battery voltage >36 volts.
2. Vehicle operating with charger attached.
3. Intermittent battery connection.
2.1 ¤¤ ¤ MAIN OFF FAULT 1. Main contactor driver failed open.
TROUBLE SHOOTING
Trouble Probable causes Remedy
The motors do not work; no
warning light turns on (C9)
The battery connector is disconnected Connect the battery connector
The batteries are completely discharged Charge the batteries
The machine do not work, red
battery capacity warning light
turns on (C8)
The batteries level is too low Charge the batteries
The machine do not go-forward
/backward
the control circuit board fault Replace the control circuit board
The drive motor controller fault Refer to “DRIVE MOTOR ERROR INDICATOR
INFORMATION”
The operator not on the seat Sit on the seat
Squeegee is not lifted during machine
goes backward Lift the squeegee
The brush motor does not work
The control circuit board fault Replace the control circuit board
Brush motor overload Use soft bristle brush that is suitable for cleaning,
and reset the brush motor overload protector
Brush motor contactor fault Contact after-sales service
Brush motor carbon brush wearing Contact after-sales service
Obstacles prevent the brush rotating Clean the brush
The drive motor does not work
Drive motor trouble light turns on Refer to “DRIVE MOTOR ERROR INDICATOR
INFORMATION”
Drive motor overload Reset drive motor overload protector and check
drive motor/circuit
The vacuum motor does not work
Vacuum motor overload Reset vacuum motor overload protector and check
vacuum motor
Relay of vacuum motor fault Contact after-sales service
Control board fault Replace the control board
Insufficient suction, the floor
cannot be dried
Recovery tank is full Empty the recovery tank
Drain hose and squeegee poor connection Connect the drain hose and squeegee correctly
Float ball filter block Clean the float ball filter and check the float ball
position status
Squeegee is dirty or wearing Check and clean the squeegee
The The recovery tank cover is not closed
properly, or the gasket is damaged, or the
Bend tube is clogged
Close the cover correctly, or replace the gasket or
clean the Bend tube.
The Recovery tank is dirty Clean the recovery tank
Insufficient solution supply to
brush plate
The solution filter is dirty Clean the filter
The solution tank empty indicator is on Fill the solution tank
The solution tank is too dirty Clean the solution tank
Squeegee leaves scratch on the
floor
There are debris under the squeegee blade Remove the debris
Squeegee blade wear, crack, aged Replace the squeegee blades
The squeegee balance is not adjusted Adjust the squeegee balance
Drive motor brake failure The brake is locked Set the brake unstuck
29


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