Wheel System, Traction 191Service Manual – SC6500
™
Troubleshooting Chart
Flash
Code
#
Programmer LCD
Display/ Effect Of Fault
Possible Cause(s) Set/Clear Conditions
16 Controller Severe
Overtemp
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake; ShutdownPump.
1. See Monitor menu » Controller:
Temperature.
2. Controller is operating in an
extreme environment.
3. Excessive load on vehicle.
4. Improper mounting of
controller.
Set: Heatsink temperature
above +95°C (+203°F)
Clear: Bring heatsink
temperature below +95°C
(+203°F), and cycle interlock or
KSI.
17 Severe Undervoltage
Reduced drive torque.
1. Battery Menu parameters are
misadjusted.
2. Non-controller system drain on
battery.
3. Battery resistance too high.
4. Battery disconnected while
driving.
5. See Monitor menu » Battery:
Capacitor Voltage.
6. Blown B+ fuse or main
contactor did not close.
Set: Capacitor bank voltage
dropped below the Severe
Undervoltage limit with FET
bridge enabled.
Clear: Bring capacitor voltage
above Severe Undervoltage
limit.
18 Severe Overvoltage
ShutdownMotor;
ShutdownMainContactor;
ShutdownEMBrake;
ShutdownThrottle;
FullBrake; ShutdownPump.
1. See Monitor menu » Battery:
Capacitor Voltage.
2. Battery menu parameters are
misadjusted.
3. Battery resistance too high for
given regen current.
4. Battery disconnected while
regen braking.
Set: Capacitor bank voltage
exceeded the Severe
Overvoltage limit with FET
bridge enabled.
Clear: Bring capacitor voltage
below Severe Overvoltage
limit, and then cycle KSI.
22 Controller Overtemp
Cutback
Reduced drive and brake
torque.
1. See Monitor menu » Controller:
Temperature.
2. Controller is performance-
limited at this temperature.
3. Controller is operating in an
extreme environment.
4. Excessive load on vehicle.
5. Improper mounting of
controller.
Set: Heatsink temperature
exceeded 85°C. (+185°F)
Clear: Bring heatsink
temperature below 85°C.
(+185°F)
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