Controller Overcurrent

Motor U,V,W connection short, motor parameter mismatching, controller failure

Current Sensor Fault

Motor U,V,W truck circuit causing current leakage, controller failure

Precharge Failed

Battery cannot be charged

Controller Severe Undertemp

Controller operating in extreme cold environment

Controller Severe Overtemp

Harsh environment, truck overloaded, controller wrongly assembled

Severe Undervoltage

Battery parameter wrong, non-controller system power drain, high battery impedance, disconnected battery

Severe Overvoltage

Battery parameter wrong, high battery impedance, battery disconnected during regen braking

Controller Overtemp Cutback

Harsh environment, overloaded, wrong assembly

Undervoltage Cutback

Low battery, wrong battery parameters, high impedance

Overvoltage Cutback

Regen braking elevated voltage, wrong battery parameters

Motor Temp Hot Cutback

Motor at or above temperature hot setting

Motor Temp Sensor Fault

Motor thermistor not connected properly

Coil Driver Open/Short

Open or short on driver load, dirty connector pins, wrong wiring

EM Brake Open/Short

Electromagnetic brake coil open or shorted

Encoder Fault

Motor encoder failure, wrong wiring

Motor Open

Motor phase open, faulty wiring

Main Contactor Welded

Contactor tips welded, motor U or V disconnected

Main Contactor Did Not Close

Contactor not closed, tips oxidized or burned

Throttle Wiper High

Throttle pot wiper voltage too high

Throttle Wiper Low

Throttle pot wiper voltage too low

EEPROM Failure

EEPROM storage failure