Microwave displays 'E-41' and will not start cooking.

Safety warning: Door interlock systems are critical for radiation safety. Do not bypass or tape switches. Always unplug the unit before inspection.

• Check door closure: Open and close the door firmly. Listen for distinct clicks from the latch area. If the door feels loose or does not latch securely, the latch or hinges may be misaligned.
• Inspect latch area: Look for broken plastic latch hooks on the door or damage to the latch bracket on the cabinet.
• Try gentle pressure: While starting a cook cycle, gently press on the door near the latch side. If the unit starts or the error changes, the door switch alignment is likely off.
• Service door switches: Replacing or adjusting door switches and latch brackets requires removing the outer cabinet and working near high-voltage components. Have a qualified technician test and replace the primary door switch and adjust the latch assembly.