EKKO EK20R Service Manual page 33

d.Fault Diagnosis menu
1232SEProgrammable fault diagnosis menu and status display LED fault
diagnosis table
There are two luminous LED lights, red and yellow, on the controller shell. Different flashing
conditions represent different fault conditions, as shown in the following table:
According to situation
Neither light is on
The yellow lights flickered
The yellow and red lights are
always on
The yellow and red lights
were flashing
CODE FAULT DISPALY
Controller Overcurren
1，2 控制器过流（主接触器、电磁制
动器、电机不工作）
Current Sensor Fault
1，3 电流传感器故障（主接触器、电
磁制动器、电机不工作）
Precharge Failed
1，4 预充电失败（主接触器、电磁制
动器、电机不工作）
Controller Severe Undertemp
1，5 控制器工作在低温保护温度之下
（主接触器、电机、电磁制动器、
On behalf of the meaning
The controller has no power because the batteries
are dead or the wiring is faulty
Controller works normally
The controller is updating its software
Controller is faulty.
POSIBILITY
1. 1. The U, V, or W phases of the motor are short-circuited
2. 2. Motor parameters are incorrectly set
3. Controller failure
1. Short circuit of U, V, W relative to car body (short circuit
of motor stator)
2. The controller is faulty
1. An external load connected to the capacitor bank (terminal
B+) prevents the capacitor from charging.
View the capacitor voltage under the Monitor menu.
1. 1. The controller works in the limit environment (below
-40℃).
2. View the controller temperature in the Monitoring menu.
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