Whirlpool Microwave dOn — What It Means & How to Fix It
Also shown as dOff, Demo Mode, d on some models.
dOn or a "d" icon means demo mode is on, so the microwave will not heat — open the door, hold number 3 for 5 seconds, then press Start within 5 seconds to turn it off.
What this code means
Whirlpool says "dOn" or "dOff" shows when demo mode has just been turned on or off. The toggle is the same both ways: open the door, press and hold number keypad 3 for 5 seconds until the d icon lights, then press Start within 5 seconds. When turning it off the display shows dOff for 5 seconds and returns to normal.
Steps are Whirlpool's example for over-the-range models; check the manual for yours.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Demo mode left on from the store | Common | Yes — no tools |
| Key sequence entered by accident | Occasional | Yes — no tools |
What you can try yourself
- Open the door.
- Press and hold number 3 for 5 seconds until the d icon lights.
- Press Start within 5 seconds; dOff shows for 5 seconds.
- Close the door and heat a cup of water to confirm.
When to call a technician
- Demo mode will not turn off.
- Still no heat with demo off.
- Keypad 3 unresponsive.
Typical professional repair cost: Nothing.
Frequently asked questions
Why does my microwave run but not heat?
It may be in demo mode. Look for a d icon or dOn.
How do I turn off demo mode?
Open the door, hold 3 for 5 seconds, then press Start within 5 seconds.
What does dOff mean?
Demo mode has just been turned off.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Whirlpool codes
- Whirlpool Microwave E03 E03 — or a plain F2 — means the keypad reported a problem to the control board; reset power for one minute and call for service if it comes back.
- Whirlpool Microwave SE SE means there is a problem with the keypad (user interface) or its wiring — clean and dry the panel, reset power for a minute, and call service if SE remains.
- Whirlpool Microwave E11 E11 and E12 point to the microwave's gas sensor — the sensor used for automatic cooking — or its wiring; reset power for a minute, and expect to need a technician if it returns.
- Whirlpool Microwave E13 E13 means the oven did not pre-heat correctly, with a possible problem in the appliance control board or its wiring; reset power for a minute and call service if it repeats.
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