Know Your Machine
20
Service Manual – Advenger, 2800ST, 3800ST, BR 755, BR 855
Speed Control Error Flash Codes
STATUS LED FAULT CODES (TABLE 1)
LED CODE
STATUS LIGHT
DISPLAY
EXPLANATION
POSSIBLE CAUSE
1,1
O O
over-/under-temperature cutback
1. Temperature >97°C (206°F) or < -25°C (-13°F).
2. Excessive load on vehicle.
3. Operation in extreme environments.
4. Electromagnetic, foot or parking brake not
releasing properly.
1,2
O OO
throttle fault
1. Throttle input wire open or shorted.
2. Throttle pot defective.
3. Wrong throttle type selected.
1,3
O OOO
speed limit pot fault
1. Speed limit pot wire(s) broken or shorted.
2. Broken speed limit pot.
1,4
O OOOO
battery voltage too low
1. Battery voltage <17 volts.
2. Bad connection at battery or controller.
1,5
O OOOOO
battery voltage too high
1. Battery voltage >36 volts.
2. Vehicle operating with charger attached.
3. Intermittent battery connection.
2,1
OO O
main contactor driver Off fault
1. Main contactor driver failed open.
2,3
OO OOO
main contactor fault
1. Main contactor welded or stuck open.
2. Main contactor driver fault.
3. Brake coil resistance too high.
2,4
OO OOOO
main contactor driver On fault
1. Main contactor driver failed closed.
3,1
OOO O
HPD fault present for >10 sec.
1. Misadjusted throttle.
2. Broken throttle pot or throttle mechanism.
3,2
OOO OO
brake On fault
1. Electromagnetic brake driver shorted.
2. Electromagnetic brake coil open.
3,3
OOO OOO
precharge fault
1. Controller failure.
2. Low battery voltage.
3,4
OOO OOOO
brake Off fault
1. Electromagnetic brake driver open.
2. Electromagnetic brake coil shorted.
3,5
OOO OOOOO
HPD (High Pedal Disable) fault
1. Improper sequence of throttle and
KSI*
,
push, or inhibit inputs.
2. Misadjusted throttle pot
4,1
OOOO O
current sense fault
1. Short in motor or in motor wiring.
2. Controller failure.
4,2
OOOO OO
motor voltage fault (hardware
failsafe)
1. Motor voltage does not correspond to
throttle request.
2. Short in motor or in motor wiring.
3. Controller failure.
4,3
OOOO OOO
EEPROM fault
1. EEPROM failure or fault.
4,4
OOOO OOOO
power section fault
1. EEPROM failure or fault.
2. Short in motor or in motor wiring.
3. Controller failure.
*NOTE:
A KSI (key switch input) system problem is a specific HPD (high pedal disable) type operational fault, caused by the operator
activating the Fwd/Rev drive pedal before turning on the main key switch or activating the throttle before sitting on the seat. This can be
cleared by returning the operator’s drive pedal to neutral and cycling the key switch OFF and ON.
