What F3 Means
F3 on Frigidaire microwaves indicates a shorted key panel — a key has read as pressed for over 60 seconds, per Appliance Aid.
Common Causes of F3
- Stuck or shorted keypad
- Moisture or grease under the membrane
- Control board fault
🔧 One Safe Check You Can Try
Unplug the microwave for a minute. Gently wipe the keypad and check that nothing is resting on it. Restore power. If F3 returns, book service.
⚠ Why You Shouldn't Go Further Than That
- The keypad connects to the control board inside the cabinet, where the high-voltage capacitor is.
- Damage caused during a repair attempt may not be covered by your warranty — check your warranty terms first.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.