Frigidaire · Microwave Minor

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

Demo Mode is a showroom setting in the microwave's Settings menu. Frigidaire's owner's guides list it as a setting you can turn on or off (OP-4 on the FMOS1846BB; the DEMO setting on the PMOS1980AF), but they do not say what it disables. If a microwave runs but does not heat, checking that Demo Mode is off is a quick first step.

Keep using it?
Yes — fix when convenient
DIY difficulty
Easy
Verified against
frigidaire.bynder.com ↗ Frigidaire FMOS1846BB owner's guide p.9 (Settings OP-4, Demo Mode on/off); PMOS1980AF owner's guide p.17 (Demo setting)

How to fix it

  1. Open the Settings menu: on the FMOS1846BB press the settings key until OP-4 (Demo Mode on/off); on the PMOS1980AF press the settings key 5 times to reach DEMO.
  2. Turn Demo Mode off and press Start to confirm.
  3. If the microwave still does not heat, treat it as a no-heat fault and have it serviced.

Why it happens

Typical signs: DEMO shown on the display · Microwave runs but food stays cold

  • Demo Mode turned on It is a setting, so it can be left on from a showroom or turned on by accident.

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 F2 F2 — Keypad / Control Board Input Fault F3 F3 — Stuck key on touchpad F4 F4 — Humidity sensor fault

All Frigidaire codes → All microwave codes →

Frequently asked questions

What does the Demo code mean on a Frigidaire microwave?

Demo Mode is a showroom setting in the microwave's Settings menu. Frigidaire's owner's guides list it as a setting you can turn on or off (OP-4 on the FMOS1846BB; the DEMO setting on the PMOS1980AF), but they do not say what it disables. If a microwave runs but does not heat, checking that Demo Mode is off is a quick first step.

What causes the Demo code on a Frigidaire microwave?

Demo Mode turned on: It is a setting, so it can be left on from a showroom or turned on by accident.

Is it safe to keep using a Frigidaire microwave with a Demo error?

Yes — fix when convenient. This is rated a minor-severity fault.

How do I fix Demo on a Frigidaire microwave?

Open the Settings menu: on the FMOS1846BB press the settings key until OP-4 (Demo Mode on/off); on the PMOS1980AF press the settings key 5 times to reach DEMO. Turn Demo Mode off and press Start to confirm. If the microwave still does not heat, treat it as a no-heat fault and have it serviced.

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.bynder.com.