Microwave displays E14 and may not detect door open/close correctly; interior light may stay on or off incorrectly.

Safety first: Unplug the microwave before removing covers. Door safety circuits are critical to prevent microwave leakage.

Step-by-step checks:

• 1. Observe door behavior: With the unit plugged in, open and close the door. The interior light should turn on when open and off when closed. If not, note the behavior, then unplug.
• 2. Inspect hinges and door alignment: Check that the door closes evenly and that the latch hooks enter the frame openings fully. Tighten any loose hinge screws.
• 3. Access door switches: Remove the cabinet and locate the door switch assembly. Check that all switches are firmly mounted and actuated by the latch.
• 4. Test switches with a multimeter: Disconnect wires and test each switch for correct open/closed state when pressed. Replace any faulty switches.
• 5. Adjust latch bracket: If the latch does not fully depress the switches, adjust or gently bend the bracket so that the switches click firmly when the door is closed.

Warning: After any door or switch work, ensure all covers and screws are reinstalled correctly to maintain RF shielding.