What's wrong with the electric sewing machine displaying 33d2?

Fault or error code. General troubleshooting methods are available for reference:

1. Check the instruction manual: First, please check the instruction manual of the electric sewing machine for the explanation of error codes and troubleshooting methods.

2. Restart: Try to turn off the power of the electric sewing machine and restart it later.

3. Check the wiring: ensure that the power cord of the electric sewing machine is connected normally without looseness or damage.

4. Clean the interior: it may be caused by dust or wire blockage. Please turn off the power supply and carefully clean the inside of the sewing machine, especially the spool, thread and sewing area.

5, customer service support: If the above methods can not solve the problem, it is recommended to contact the after-sales customer service or maintenance center of the electric sewing machine.