Microwave beeps continuously or intermittently and displays SE; some keys may activate by themselves.

Safety first: Unplug the microwave before cleaning or disassembly.

• Clean keypad surface: Wipe the keypad with a soft cloth lightly dampened with mild detergent. Dry thoroughly. Do not allow liquid to seep around the edges of the panel.
• Dry out moisture: If SE appeared after a spill or heavy steam, leave the door open and allow the unit to air dry for several hours. You can place the unplugged microwave in a dry, warm room.
• Power reset: After drying, plug the unit back in and test. If SE is gone, monitor for recurrence.
• Internal inspection (advanced): Remove the outer cabinet and gently reseat the keypad ribbon cable on the control board. Inspect for corrosion or burn marks.
• Next step: Persistent SE usually means the keypad membrane is shorted and must be replaced, often as part of the entire control panel assembly. If replacement parts are not economical, consider replacing the microwave.