MARSHELL DG24800 - Trouble Diagnose Guide; Thermal Cutback; Throttle Faults; Speed Limit Pot Fault

12
Attach List
Trouble diagnose guide
LED code Trouble phenomenon Reason analyse Resolvent
1, 1
THERMAL CUTBACK
over-/under-temperature
cutback
1. Temperature >97 C or < -25 C.
2. Excessive load on vehicle.
3. Operation in extreme environments.
4. Electromagnetic brake not releasing
properly.
1, 2 THROTTLE FAULT 1 throttle fault
1. Throttle input wire open or shorted.
2. Throttle pot defective.
3. Wrong throttle type selected.
1, 3 SPD LIMIT POT FAULT speed limit pot fault
1. Speed limit pot wire(s) broken or shorted.
2. Broken speed limit pot.
1, 4 LOW BATTER
Y
VOLTAGE
battery voltage too low
1. Battery voltage <17 volts.
2. Bad connection at battery or controller.
1, 5 OVERVOLTAGE battery voltage too high
1. Battery voltage >36 volts.
2. Vehicle operating with charger attached.
3. Intermittent battery connection.
2, 1 MAIN OFF FAULT
main contactor driver Off
fault
1. Main contactor driver failed open.
2, 3 MAIN CONT FLTS main contactor fault
1. Main contactor welded or stuck open.
2. Main contactor driver fault.
3. Brake coil resistance too high.
2, 4 MAIN ON FAULT
main contactor driver On
fault
1. Main contactor driver failed closed.
3, 1 PROC/WIRING FAULT
HPD fault present for >10
sec.
1. Misadjusted throttle.
2. Broken throttle pot or throttle mechanism.
3, 2 BRAKE ON FAULT brake On fault
1. Electromagnetic brake driver shorted.
2. Electromagnetic brake coil open.
3, 3 PRECHARGE FAULT precharge fault
1. Controller failure.
2. Low battery voltage.
3, 4 BRAKE OFF FAULT brake Off fault
1. Electromagnetic brake driver open.
2. Electromagnetic brake coil shorted.
3, 5 HPD
HPD (High Pedal Disable)
fault
1. Improper sequence of throttle and KSI,
push, or inhibit inputs.
2. Misadjusted throttle pot.