Wheel System, Traction
82
Service Manual – Focus II / Scrubtec R6 Rider Autoscrubber
Wheel Drive Controller Error Codes
The Wheel drive controller
(A2)
communicates error codes with
Main Machine Controller
(A1)
the through the Status output of
the Wheel controller. When the Wheel controller presents an error
to the Main Machine Controller, the display will indicate an “03”
error designated as a drive controller error, and the Detergent
LED
(R)
will flash out the 2-digit error code number. The LED
will flash a number of times representing the first digit, then
a short pause before flashing a number of times representing
the second digit, and then a longer pause before repeating the
sequence. There may be multiple faults, but only one fault is
indicated at a time.
Error codes can also be read using the
PN 56409441 described on page 93
Status Led Fault Codes
Code Programmer Display /
Explanation
Possible Cause
1,1
THERMAL CUTBACK
Over/under-temperature
cutback
•
Temperature >92°C (206°F) or < -25°C (-13°F)
•
Excessive load on vehicle
•
Operation in extreme environments
•
Electromagnetic brake not releasing
1,2
THROTTLE FAULT 1
Throttle fault
• Throttle input wire open or shorted
•
Throttle pot defective
• Wrong throttle type selected
1,3
SPEED LIMIT POT FAULT
Speed limit pot fault
•
Speed limit pot wire(s) broken or shorted
•
Broken speed limit pot
1,4
LOW BATTERY VOLTAGE
Battery voltage too low
•
Battery voltage <17 volts
• Bad connection at battery or controller
1,5
OVERVOLTAGE
Battery voltage too high
•
Battery voltage >36 volts
• Vehicle operating with charger attached
•
Intermittent battery connection
2,1
MAIN OFF FAULT
Main contactor driver Off fault
•
Main contactor driver failed open
2,3
MAIN CONT FLTS
Main contactor fault
•
Main contactor welded or stuck open
•
Main contactor driver fault
• Brake coil resistance too high
2,4
MAIN ON FAULT
Main contactor driver On fault
•
Main contactor driver failed closed
3,1
PROC/WIRING FAULT
Fault present for >10 sec.
•
Misadjusted throttle (pedal depressed at key-on)
•
Broken throttle pot or throttle mechanism
•
The keyswitch must be cycled before this fault can clear
3,2
BRAKE ON FAULT
Brake On fault
•
Electromagnetic brake driver shorted
•
Electromagnetic brake coil open
3,3
PRECHARGE FAULT
Precharge fault
•
Low battery voltage
• Throttle engaged when KSI (keyswitch input) turned on
3,4
BRAKE OFF FAULT
Brake Off fault
•
Electromagnetic brake driver open
•
Electromagnetic brake coil shorted
R
F5
F6
S
