Chariot CV28 Operating Instructions Manual page 36

MACHINE TROUBLESHOOTING- CONTROLLER FAULT CODES
PROPEL CIRCUIT BOARD TROUBLESHOOTING
Curtis 1228 LED DIAGNOSTICS- Basic and Cylindrical
During normal operation, with no faults present, the status LED is steadily on.
If the controller detects a fault, the status LED provides two types of information.
First, it displays a slow flash (2 Hz) or a fast flash (4 Hz) to indicate the severity of the fault. Slow-flash faults
are self-clearing; as soon as the fault is corrected, the vehicle will operate normally. Fast-flash faults ("." in
Table 2) are considered to be more serious in nature and require that the key switch be cycled to resume
operation after the fault is corrected.
After the severity indication has been active for 10 seconds, the status LED flashes a 2-digit fault identification
code continuously until the fault is corrected. For example, code "1,4"—low battery voltage—appears as: one
LED flash, followed by a pause, then 4 LED flashes, and then repeats.
LED PROGRAMMER LCD
CODE DISPLAY
1,1 THERMAL CUTBACK
1,2 THROTTLE FAULT 1
1,3 SPD LIMIT POT FAULT
1,4 LOW BATTERY VOLTAGE
1,5 OVERVOLTAGE
2,1 MAIN OFF FAULT
2,3 MAIN CONT FLTS
2,4 MAIN ON FAULT
4-17
EXPLANATION
over-/under-temperature
cutback
throttle fault
speed limit pot fault
battery voltage too low
battery voltage too high
main contactor driver Off fault
main contactor fault
main contactor driver On fault
86037810 CHARIOT® VACUUM 05/27/08
POSSIBLE CAUSE
1. Temperature >92°C or < -25°C.
2. Excessive load on vehicle.
3. Operation in extreme environments.
4. Electromagnetic brake not releasing.
1. Throttle input wire open or shorted.
2. Throttle pot defective.
3. Wrong throttle type selected.
1. Speed limit pot wire(s) broken or shorted.
2. Broken speed limit pot.
1. Battery voltage <17 volts.
2. Bad connection at battery or controller.
1. Battery voltage >36 volts.
2. Vehicle operating with charger attached.
3. Intermittent battery connection.
1. Main contactor driver failed open.
1. Main contactor welded or stuck open.
2. Main contactor driver fault.
3. Brake coil resistance too high.
1. Main contactor driver failed closed.