Whirlpool · Microwave Minor

Demo — Mode — Not Heating

Demo Mode is a showroom setting. The light, fan, and turntable run, but the magnetron is disabled so food does NOT heat. People often think the microwave is broken when it's just in Demo.

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

How to fix it

  1. Check the owner's manual for the model's exact Demo Mode toggle. Whirlpool typically uses a long-press combo (often Cancel + a number, or a specific key sequence at power-up).
  2. Power down at the breaker for 1 minute, then power up and try the toggle within 10 seconds.
  3. After disabling, run a 30-second test with a cup of water. If the water heats, Demo is off.
  4. If the unit still shows 'Demo' and won't accept the toggle, the keypad or control board has failed.

Why it happens

Typical signs: 'Demo' on the display · Microwave runs but food stays cold · Turntable, light, and fan operate normally

  • Demo Mode enabled at the factory or by a previous user Common on units bought from a floor model or after a service tech enabled it.

Related repair guides

Microwave Runs But Doesn't Heat — What to Check →

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Frequently asked questions

What does the Demo code mean on a Whirlpool microwave?

Demo Mode is a showroom setting. The light, fan, and turntable run, but the magnetron is disabled so food does NOT heat. People often think the microwave is broken when it's just in Demo.

What causes the Demo code on a Whirlpool microwave?

Demo Mode enabled at the factory or by a previous user: Common on units bought from a floor model or after a service tech enabled it.

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

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

How do I fix Demo on a Whirlpool microwave?

Check the owner's manual for the model's exact Demo Mode toggle. Whirlpool typically uses a long-press combo (often Cancel + a number, or a specific key sequence at power-up). Power down at the breaker for 1 minute, then power up and try the toggle within 10 seconds. After disabling, run a 30-second test with a cup of water. If the water heats, Demo is off.

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: producthelp.whirlpool.com.