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Service Manual – SW5500, FLOORTEC R 985
05 - Control System
CODE - Description
(shown on multifunction display)
Condition
Effect
Service Suggestions
TR AL.220
KEY OFF SHORTED
Short circuit on key circuit
Drive operation blocked
Check the key switch circuit
wires from B+ to EB2.JC.1
(SW0, KEY, ES8 (only for
LPG/D versions)).
TR AL.221
FLASH CHECKSUM
Software problem (internal to
Drive board (EB2) )
Drive operation blocked
Replace the Main Machine
Controller.
TR AL.223
COIL SHOR. MC-EB
Contactor coil short circuit
Drive operation blocked
Check for the drive system
contactor (ES2) coil wires,
replace the contactor.
TR AL.226
VACC OUT RANGE
Pedal analogue output beyond
max
Drive operation blocked
Check the drive pedal (R1)
harness: Check for any short
circuit of one of the cables to
the + BATT on the external or
internal drice pedal.
Pedal output voltage (white
wire) should be less than 5Vdc
(Pedal is supplied at 12-14Vdc,
analogue output is 0-5Vdc).
TR AL.228
SEAT SWITCH OPEN
Seat microswitch open
Drive operation blocked
Check the driver’s seat switch
(SW1) wires, replace the
driver’s seat switch.
TR AL.231
WATCHDOG#2
Issue internal to the drive
board.
Drive operation blocked
Switch off and on the machine
by key switch (KEY).
If persists, replace the Main
Machine Controller.
TR AL.233
POWER MOS SHORT
(Internal to Drive board (EB2) )
Drive operation blocked
Replace the Main Machine
Controller.
TR AL.236
CURRENT GAIN
Max current problem (internal to
Drive board (EB2) )
Drive operation blocked
Replace the Main Machine
Controller.
TR AL.248
NO CAN MSG.
CAN communications problem
Broom and vacuum system
operation blocked during
machine movement
Check the 2 canbus wires
between EB1.J7 and EB2.JC.
TR AL.250
THERMIC SENS. KO
Thermal sensor out of scale
(internal to Drive Wheel
Controller (EB2) )
Drive operation blocked
Replace the Main Machine
Controller.
TR AL.251
WRONG BATTERY
Battery voltage <18V or > 30V
on starting
Drive operation blocked
Check the battery voltage and
the battery connections.
Check the key switch circuit
wires from B+ to EB2.JC.1
(SW0, KEY, ES8 (only for
LPG/D versions)).
All drive system alarms cut power to the driving wheel motor until the KEY input is reset (with the
exception of alarm INCORRECT START which is reset as soon as the pedal is released)