Microwave stops a few seconds after pressing START and displays E02

Safety: Unplug the microwave before opening the cabinet. High voltage is present inside.

• 1. Reset and test: Unplug the unit for 5 minutes to reset the control. Plug back in and try again. If E02 reappears immediately, proceed to hardware checks.
• 2. Inspect door latch and hinges: Check for bent hinges, cracked latch hooks, or debris preventing full closure. Clean the latch area and ensure the door closes flush with the cabinet.
• 3. Access the door switch assembly: Remove the outer cover. Locate the group of 2–3 switches near the door latch. One is the monitor switch (often with different terminal markings).
• 4. Test the monitor switch: With the door open, the monitor switch should be closed (continuity). With the door closed, it should be open (no continuity). Replace if readings are reversed or intermittent.
• 5. Check for shorts: Inspect the switch wiring for melted insulation or pinched wires touching the chassis. Repair or replace damaged wiring.
• 6. If switches and wiring are good: The control PCB input circuit may be faulty. At this point, replacement of the control board or professional diagnosis is recommended.