The E30 error on a Brother embroidery machine usually indicates a problem with the upper thread sensor, which detects whether or not the thread is properly threaded through the machine. Here are some steps you can take to try and fix the issue:
- First, turn off the machine and unplug it from the power source. Wait a few minutes before plugging it back in and turning it on again.
- Check the upper thread path to make sure there are no tangles, knots, or other obstructions that could be interfering with the sensor. Make sure the thread is properly threaded through all of the guides and tension discs.
- Make sure the needle is properly inserted and tightened, and that it is the correct needle for the fabric you are using.
- Check the upper thread sensor to see if it is dirty or obstructed. Use a soft brush or compressed air to clean any debris that may be causing the error.
- If none of the above steps work, it may be necessary to have the machine serviced by a professional technician. They will be able to diagnose and repair any underlying issues that may be causing the error.
