Safety first: Disconnect the range from mains power.

Check for stuck keys: Press each button on the control panel several times to feel for sticking. Wipe the panel with a slightly damp cloth and then dry thoroughly.
Inspect for moisture: If F1 appeared after cleaning or a spill, leave the appliance disconnected for several hours to allow the panel to dry.
Access control panel: Remove the back cover of the control console. Inspect the keypad ribbon cable and connector for corrosion or damage. Reseat the cable.
Membrane test: If available, use a keypad tester or substitute a known-good keypad (for models with separate keypad and EOC). If the error clears, replace the keypad or complete control panel assembly.
Replace EOC: If the keypad is integrated and no physical issues are found, the EOC itself may be faulty and should be replaced with the correct Gram control module.

Warning: Avoid spraying cleaners directly onto the control panel; spray onto a cloth instead.

Electric range oven shows F1 and beeps; keys may not respond or oven shuts off.

Possible Causes