Doosan P3A02 Cell Over Voltage Fault Trouble Repair

Doosan E-Powerpack P3A02 cell over voltage fault trouble repair guide.

 

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Reason:

Highest cell voltage > 4.25V
Module wire failure
Secondary BMS sensing problem

 

Effect:

Disable charge
Charge Power(W) = 0
Charge Current(A) = 0

 

1) Component Location:

<Cell wire>
Damaged somewhere

Doosan P3A02 Cell Over Voltage Fault Trouble Repair (2)

2) <Secondary BMS>

Doosan P3A02 Cell Over Voltage Fault Trouble Repair (1)

 

3) Condition for Running Diagnostic
During charging

4) Condition for Setting the Fault Code
Overcharge or abnormal cell voltage rise(Highest cell voltage > 4.25V)

5) Condition for Clearing the Fault Code
Operate the machine to discharge to the Highest cell voltage ≤ 4.15V

 

6) How to Solve Doosan E-Powerpack P3A02 cell over voltage

Step 1:

P3A02 is detected on service tool?

Reference value CV_HI>4.25V,Yes go to step 2

 

Step 2:

Disconnect the battery charger.
Operate the machine to discharge cell voltage in less
than 1 hr. Check the highest cell voltage(CV_HI) via
service tool.
Is P3A02 disappeared?

Reference value CV_HI<4.25V,Problem solved

 

More topics for Doosan,please refer to:Doosan Trouble Repair

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