F3 Serious Moderate DIY

Frigidaire Microwave F3 — Stuck key on touchpad

Frigidaire Microwave · Error code F3

What F3 Means

F3 indicates the control has detected a key held closed for longer than a set time (typically 60 seconds). Almost always a failed touchpad rather than a user holding a button.

Symptoms

  • F3 shown after a minute or so of idle
  • Buttons feel mushy or one key triggers wrong action
  • Microwave will not accept input

Common Causes

1
Failed membrane touchpad

Internal trace shorted from heat, moisture, or wear.

2
Grease/moisture under panel

Common on over-the-range units near cooking steam.

3
Damaged ribbon cable

Folded or pinched ribbon causes a permanent short.

How to Fix It

  1. Unplug for 5 minutes — if F3 reappears within ~1 minute idle, keypad is suspect.
  2. Remove the control panel and unplug the touchpad ribbon from the board.
  3. Power on; if F3 does not appear, replace the touchpad assembly.
  4. If F3 still appears with keypad disconnected, replace the control board.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Frigidaire microwave touchpad View on Amazon→

More Frigidaire Microwave Codes

Child Lock 'Lock' / 'L' — Child lock engaged Cooling Fan 'Cooling Fan' / Fan-runs-after-cooking — Vent fan stuck on Demo 'Demo' / 'd' — Showroom demo mode on door 'door' message — Door not fully closed F1 F1 — Control board / thermistor open F10 F10 — Analog-to-digital / keypad communication error

All Frigidaire codes → All microwave codes →

Verified against manufacturer documentation: frigidaire.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.