Microwave beeps and displays F2; may occur when trying to start cooking or randomly during idle.

Safety: Unplug the microwave before any physical inspection. Do not open the outer cabinet.

Steps:

• Clean keypad surface: Wipe the keypad with a soft cloth lightly dampened with mild soap solution. Immediately dry with a clean cloth. Do not allow liquid to seep around the edges of the keypad.
• Check for physical damage: Look for cracks, bubbling, or peeling on the keypad area. Any visible damage usually means the membrane is compromised.
• Power cycle: After cleaning, leave the unit unplugged for 10 minutes, then plug back in and test. Try pressing different keys to see if F2 reappears.
• Front access (if comfortable): With power disconnected, remove the top grille and the screw securing the control panel. Tilt the panel out and gently reseat the keypad ribbon cable into the main PCB. Ensure it is fully inserted and straight.

If F2 persists: The keypad membrane or control panel assembly typically needs replacement. Because this involves disassembly near high-voltage wiring, have a professional perform the replacement and safety checks.