
98
Service Manual – SW5500, FLOORTEC R 985
20 - Wheel System, Traction
Drive Board Error Codes
CODE - Description
(shown on multifunction display)
Meaning
First procedure
If the problem persists
TR AL.65
MOTOR TEMPERAT.
Motor thermal sensor over
150° => max. speed reduced
to 23%.
Check the current drawn into
the drive motor (M0) and its
temperature.
Substitute the temperature
sensor (S5).
TR AL.66
BATTERY LOW
Battery below 10%.
Check the battery voltage.
Recharge or substitute the
batteries if defective.
TR AL.74
DRIVER SHORTED
Issue internal to the drive
board.
Switch off and on the
machine by key switch
(KEY).
Replace the Main Machine
Controller.
TR AL.75
CONTACTOR DRIVER
Issue internal to the drive
board.
Switch off and on the
machine by key switch
(KEY).
Replace the Main Machine
Controller.
TR AL.78
VACC NOT OK
Pedal analogue output not
correct at rest.
Check the accelerator pedal
output (R1.WHITE WIRE).
Substitute the pedal.
TR AL.79
INCORRECT START
Pedal pressed on start (pedal
microswitch closed).
Check the accelerator pedal
(R1) stroke. Idle position end
of stroke in particular.
Substitute the pedal.
TR AL.82
ENCODER ERROR
Encoder fails.
Check the drive system
motor encoder connection
(ENC). Check for debris in
the drive system motor (M0)
encoder track.
Replace the encoder (ENC).
TR AL.86
PEDAL WIRE KO
No pedal negative.
Check the accelerator pedal
(R1) wires and connections.
Substitute the pedal.
TR AL.208
EEPROM KO
Issue internal to the drive
board.
Switch off and on the
machine by key switch
(KEY).
Replace the Main Machine
Controller.
TR AL.209
PARAM RESTORE
Issue internal to the drive
board.
Switch off and on the
machine by key switch
(KEY).
Replace the Main Machine
Controller.
TR AL.210
WRONG RAM MEM.
Issue internal to the drive
board.
Switch off and on the
machine by key switch
(KEY).
Replace the Main Machine
Controller.
TR AL.211
STALL ROTOR
Motor stall.
Check for drive system motor
(M0) mechanical stuck.
Replace the Main Machine
Controller.
Check the wiring from
the motor wheel Encoder
(ENC) and the Drive Wheel
Controller (EB2)
Repare the Encoder wiring or
substitute the sensor
TR AL.212
WRONG RAM
Issue internal to the drive
board.
Switch off and on the
machine by key switch
(KEY).
Replace the Main Machine
Controller.
TR AL.218
SENS MOT TEMP KO
Motor thermal sensor out of
scale.
Check the temperature
sensor (S5) wires and
connections.
Substitute the temperature
sensor (S5).
TR AL.220
KEY OFF SHORTED
Short circuit on key circuit.
Check the wire from EB1.
J1.11 to ES8 (only for LPG /
D) to EB2.JC.1.
Replace the Main Machine
Controller.
TR AL.221
FLASH CHECKSUM
Issue internal to the drive
board.
Switch off and on the
machine by key switch
(KEY).
Replace the Main Machine
Controller.