ENGLISH
48
Service Manual - CR 28
BOOST
®
DRIVE SYSTEM
TROUBLESHOOTING
OPEN CIRCUIT
The.fuse.(F2).causes.an.open.in.the.circuit..This.system.allows.to.prevent.the.drive.system.motor.and.its.circuits.from.being.
damaged.under.overload.conditions.
If.there.is.an.open.in.the.circuit,.the.possible.causes.are:
There.are.bulky.debris.or.cords.under.the.machine.or.around.the.driving.wheels.(remove.the.debris).
The.motor.is.damaged.(check.the.motor.electrical.input).
The floor gradient is excessive (do not use the drive system on slopes with a gradient exceeding the specifications).
There.is.a.short.circuit.in.the.drive.system.electronic.board.wiring.harness.(repair).
The.drive.system.electronic.board.is.faulty.(replace).
The.parking.brake.is.faulty.(see.the.Parking.Brake.chapter).
THE MACHINE DOES NOT MOVE
Possible.causes:
The.battery.voltage.is.too.low.(charge.the.battery).
The forward/reverse gear pedal potentiometer is misadjusted or broken (adjust or replace).
The speed adjuster is broken (replace).
The.drive.system.electronic.board.is.faulty.(replace).
The.wiring.harness.is.damaged.(check.all.connections.inside.the.electrical.component.compartment,.included.those.of.the.
function.electronic.board).
The.drive.system.motor.carbon.brushes.are.worn.(replace).
The.drive.system.motor.is.faulty.(replace).
The.microswitch.of.the.safety.system.that.prevents.the.machine.movement.if.the.operator.is.not.seating.on.the.driver's.seat,.is.
broken.(repair/replace).
The.parking.brake.cannot.be.disengaged.(see.the.Parking.Brake.chapter).
There.is.an.open.in.the.drive.system.electronic.board.fuse.F2.(replace).
The.function.electronic.board.is.faulty.(see.the.Electrical.System.chapter).
DRIVE SYSTEM ELECTRONIC BOARD ERROR CODES
The.warning.LED.(99).stays.on,.when.the.drive.system.operates.properly.and.the.machine.is.in.the.following.condition:
Ignition.key.(12).turned.to."I".
If the warning LED (99) is off or flashing, it indicates an error. Check the error code according to the following table.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
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