Sources of authoritative error lists and support
: For computerized models, errors can range from simple settings issues to more complex motherboard or sensor problems.
| Code | Description | Probable Cause | Solution | | :--- | :--- | :--- | :--- | | | Main Motor Lock / Overcurrent | The motor is physically blocked or the internal wiring is shorted. | 1. Turn off power. Check if the handwheel is jammed by thread or fabric. 2. Check the motor cable connection between the motor and the control box. 3. If the problem persists, the motor driver board may be damaged. | | E02 | Overvoltage | Input voltage is too high (usually above 260V). | 1. Check the power supply voltage in your facility. 2. Use a voltage stabilizer if necessary. | | E03 | Undervoltage | Input voltage is too low. | 1. Check power connections. 2. Ensure the power plug is secure. | | E04 | Motor Phase Error | The machine cannot detect the motor position. | 1. The connector cable between the motor and control box is loose or disconnected. 2. The motor sensor (encoder) is faulty. |
Turn the power off, wait 60 seconds for the capacitors to discharge, and turn it back on.