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9.3. Alarms displayed 512 – 712 RIDER
Acc Accelerator. Appears if the accelerator knob (fig. A, ref. 9) is activated before the machine
is turned on or after the emergency button has been reset. Release the accelerator knob
then action again
Pot Potentiometer. Appears if the speed potentiometer malfunctions or is faulty. The drive has
stopped. Release the knob then action again. If the message continues, the potentiometer
could be faulty.
Lim Limitation. Appears when a mosfet internal thermal limitation problem occurs. The drive
has stopped. Release the accelerator knob then action again. If the problem continues,
wait for a few minutes.
Hot Overheating. When the motor overheat sensor trips, wait for a few minutes for the motor to
cool down.
MoS Mosfet. Appears when the mosfet is in short circuit. All machine functions are shut down.
bLt Drive block. Appears when the battery voltage is too low. Recharge the batteries.
AcS Brush control fault. Appears when there is a fault in the relay controlling the brush. Turn
off the brush motor then turn on again. If the message does not disappear, the relay may
be disconnected or the control element on the board may be faulty.
AcA Suction control fault. Appears when there is a fault in the relay controlling the suction.
Turn off the suction motor then turn on again. If the message does not disappear, the relay
may be disconnected or the control element on the board may be faulty.
NoFR General solenoid switch KM1 fault. Appears when the general solenoid switch is faulty.
Turn the machine off then on again. If the message does not disappear, the solenoid switch
may be faulty disconnected or disconnected, or the control element on the board may be
faulty.
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