EKKO Walkie EB16EA, Service Manual

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8
code Malfunction name Possible cause
1 Controller Overcurrent 1
，
motor external U,V or W connection short circuit
2
，
motor parameter isn’t match
3
，
controller malfunction
2 Current Sensor Fault 1
，
motor U,V,W through the stator on the car body short circuit,resulting in
leakage.
2
，
controller malfunction
3 Precharge Failed 1
，
the positive end of the capacitor is connected with negative load,so that the
capacity can not be charged normally
4 Controller Severe
Undertemp
1
，
the operating environment of the controller is too harsh
5 Controller Severe
Overtemp
1
，
the operating environment of the controller is too harsh
2
，
vehicle overload
3
，
controller installation incorrect
6 Severe Undervoltage 1
，
battery parameter setting mistake
2
，
power consumption for non-controller system
3
，
excessive battery impedance
4
，
the battery is disconnected
5
，
the fuse is not connected ,or the main contactor is not connected.
7
Severe Overvoltage 1
，
battery parameter setting is incorrect.
2
，
excessive battery impedance
3
，
battery connection disconnected during regenerative brake
8
Controller Undertemp
Cutback
1
、
the controller operate under the restricted conditions
2
、
the operating environment of the controller is too harsh
9 Controller Overtemp
Cutback
1, the operating environment of the controller is too harsh
2
，
vehicle overload
3
，
controller installation incorrect
10 Undervoltage Cutback 1
，
low battery
2
，
battery parameter setting incorrect
3
，
non-controller system runs out of power
4, excessive battery impedance
5, the battery disconnected
6
，
the fuse is not connected ,or the main contactor is not connected.
11 Overvoltage Cutback 1
，
the regenerative braking current increase the battery voltage during the
regenerative braking
2
，
battery parameter setting incorrect
3
，
excessive battery impedance
4
，
battery connection disconnected during regenerative brake
12 +5V Supply Failure 1
，
the impedance of external load is too low
13 Digital Out 6 Failure 1
，
the impedance of external load is too low
14 Digital Out 7
Overcurrent
1
，
the impedance of external load is too low
15 Motor Temp Hot
Cutback
1
，
the motor temp reaches or exceeds the alarm temp set by program,
resulting in reduced current output
2
，
motor temp parameter setting incorrect