Vacon · X4
This fault is triggered if the drive detects a persistent key press during power-up. This can be caused by a faulty keypad button or a user inadvertently holding a key down while powering on the drive. This prevents proper initialization and operation via the keypad.
Click steps to track your progress.
1. Power down the drive. Visually inspect all keypad buttons for physical damage, foreign objects, or sticky residue.
2. Gently press and release each keypad button several times to dislodge any potential debris and verify spring-back action.
3. If supported, temporarily disconnect the keypad unit and power on the drive to determine if the keypad is the fault source.
4. If the fault clears after keypad disconnection, the keypad unit requires replacement.