BYD PMW20 - PROGRAM AND SOFTWARE; Tools and Software

PMW20
151
42. Error ID: 02A14
Error Description: DRV. SHOR. EV
Cause A
When the key switch is closed, the controller will detect whether the driver of the master
contactor is short-circuited or disconnected. If it is short-circuited or disconnected, it will
alarm.
Handling Method:
Check whether the wires at both ends of the coil, A1/A2/A8/A6 and B2, are short-circuited or
not connected to the contactor coil. If the outer part is normal, replace the controller.
Operation method of replacing the controller is the same as the Error ID 02A00.
43. Error ID: 02A75
Error Description: CONTACTOR CLOSED
Cause A
Before closing down the coil of the master contactor, the controller detects whether contacts
of the master contactor adhere at first. Try to discharge the capacitor. If the capacitor
voltage reduces the battery voltage by 20%, a fault may occur.
Handling Method:
1) Recommend to check whether contacts of the contactor adhere.
2) Check whether the power line or the copper bar is short-circuited with the car body.
3) Check the battery for serious leakage.
4) Or replace the contactor.
PMW20
150
If the motor wiring is normal, it is the problem inside the motor and replace the controller.
Operation method is the same as the Error ID 02A00.
39. Error ID: 02A72
Error Description: INIT VMN LOW
Cause A
The controller initialization output is lower than the predetermined value.
Handling Method:
1) The circuit inside the motor.
2) Motor cable connection.
3) There is leakage between the motor cable and the forklift body.
40. Error ID: 02A03
Error Description: DRIVER SHORTED
Cause A
When the electric lock is closed, the controller will detect whether the drive of the master
contactor is short-circuited or disconnected. If it is short-circuited or disconnected, it will
alarm.
SM-PMW202020001-EN
SM-PMW202020001-EN
41. Error ID: 02A74
Error Description: AUX BATT. SHORT
Cause A
The auxiliary driver is short-circuited.
Handling Method:
Check whether the connection between B1 and B5 is correct. If yes, replace the controller;
(electromagnetic brake of the driving motor)
Operation method of replacing the controller is the same as the Error ID 02A00.
Handling Method:
Check whether the two wires of the master contactor coil, B6, and the wire of the steering
controller, A4, are short-circuited or not connected to the contactor coil. (Controller with
steering) check whether the two wires of the master contactor coil, B6 and C1, are short-
circuited or not connected to the contactor coil. (Controller without steering) If the outer
part is normal, replace the controller.
Operation method is the same as the Error ID 02A00.
Refer to 7.5 for contactor replacement.