"The thread number is invalid." message appearing on the LCD.
What does it mean and how do I clear it?
Thread color that was specified is incorrect.
The thread color number that was entered is not in the custom thread table setting.
Check the number, and then try entering the number again.
If the start/stop button is pressed while the machine is not correctly set up or if an incorrect operation is performed, the machine stops and informs you of the error with a buzzer and an error message.
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