18
TROUBLE SHOOTING
Trouble
Possible Cause
Remedy
The machine doesn't
work and the LCD
display doesn't light up
The battery connector is disconnected
Connect the battery connector
The batteries are completely discharged
Charge the batteries
10% The machine don’t
work, and the battery is
displayed at 10%
Low battery
Charge the batteries
The machine do not
go-forward/backward
Control circuit board failure
Replace the control circuit board
Operator is not on the seat or seat switch
failure
Sit on the seat or replace seat switch
Accelerator pedal is unconnected or
damaged
Check the cable or replace the
accelerator pedal
The brush motor does
not work
Control circuit board failure
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 carbon brush wearing
Contact after-sales service
Obstacles prevent the brush rotating
Clean the brush
The
vacuum
motor
does not work
Vacuum motor damage
Check and replace vacuum motor
Control circuit board failure
Replace the control circuit 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
Squeegee is dirty or wearing
Check and clean the squeegee
Recovery tank cover is not closed properly,
or the seal is damaged, or the hose is
clogged
Close the cover correctly, or replace
the gasket or clean the Bend tube.
Recovery tank is dirty
Clean the recovery tank
Insufficient
solution
supply to brush plate
Solution filter is dirty
Clean the filter
Dirty solution tank or a clogged pipeline
Clean the solution tank and piping
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
