E30 indicates that the door cannot lock on the Midea L11 platform. A garment caught in the way may prevent it, but the message does not identify the latch as a faulty part.
The association is documented in the official L11 technical manual. Use your reference user manual for recovery actions.
What to check around the door
With the machine stopped and the door released, check that no clothing is caught between the gasket and the door. See whether the load is pressing on the latch and whether the catch shows damage. Close it without lifting the door, banging it, or holding it shut.
If there is water or the cycle was hot, wait until the unit allows opening. Do not remove panels to operate the lock or jumper its contacts.
When the exterior latch looks correct and E30 returns, request service with the exact moment the fault occurs. The code alone does not distinguish between misalignment, electrical confirmation, or control; replacing parts by elimination is not a user check.
Keep the sequence leading up to E30 and confirm the L11 reference before applying an explanation taken from another model.