Frigidaire · Microwave Minor

Demo — Frigidaire Microwave 'Demo' / 'd' — Showroom demo mode on

Demo mode lets the display and controls work for showroom display without actually running the magnetron. If a new (or refurbished) unit will not heat, demo mode is the first thing to check.

Keep using it?
Yes — fix when convenient
DIY difficulty
Easy
Verified against
frigidaire.com ↗

How to fix it

  1. Check the owner manual for the demo-mode toggle — typically hold a specific button (often '0' or 'Off/Clear') for 3–5 seconds.
  2. Confirm 'Demo Off' or similar appears on the display.
  3. Heat a cup of water for 1 minute — if still cold, troubleshoot as a no-heat condition (door switches, magnetron, inverter).

Why it happens

Typical signs: Microwave runs but food stays cold · Display shows 'd' or 'demo' briefly · All buttons work normally

  • Demo mode enabled Set at the factory or by a previous owner.

More Frigidaire microwave codes

Child Lock 'Lock' / 'L' — Child lock engaged Cooling Fan 'Cooling Fan' / Fan-runs-after-cooking — Vent fan stuck on door 'door' message — Door not fully closed F1 F1 — Control board / thermistor open F2 F2 — Keypad / Control Board Input Fault F3 F3 — Stuck key on touchpad

All Frigidaire codes → All microwave codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: frigidaire.com.