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Error code · Microwave

KitchenAid Over-the-Range Microwave Message “AccuPop Fail”: popcorn sensor problem

On KitchenAid over-the-range microwave hood combinations such as the KMHS120ESS or KMLS311HSS, "AccuPop Fail" indicates a possible problem with the AccuPop sensor. That sensor watches the popcorn cycle so the microwave can stop at the right…

Low risk · DIY check OK
Code
AccuPop Fail
Appliance
Microwave
Brand
KitchenAid
Warranty
30-day workmanship

What AccuPop Fail means

On KitchenAid over-the-range microwave hood combinations such as the KMHS120ESS or KMLS311HSS, "AccuPop Fail" indicates a possible problem with the AccuPop sensor. That sensor watches the popcorn cycle so the microwave can stop at the right moment. When the message shows, popcorn programs are unavailable, though ordinary timed cooking often still works.

Common causes of AccuPop Fail

  • AccuPop sensor not reading the popcorn cycle
  • Sensor wiring loose or damaged
  • A one-time control error
✓ One safe check you can try

1. Press Cancel. 2. Use a fresh, flat bag of popcorn and set it centered on the turntable. 3. Wipe moisture from the cavity. 4. Switch off the microwave's power at the plug or breaker for a minute, then restore it. 5. Use timed cooking if the message returns, and call us.

! Why to stop there
  • It only affects the popcorn feature, so the repair can be scheduled at your pace
  • A technician confirms the sensor before a part is ordered
  • Written price first, 30-day workmanship warranty on the work
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
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AccuPop FailAccuPop Fail questions
Can I still heat food with AccuPop Fail displayed?

Usually yes. Regular timed cooking does not rely on the popcorn sensor. Avoid the popcorn key until it has been checked.

What makes the sensor fail?

Wear, loose wiring or a control error can all cause it. The official note points to the sensor, so that is where testing starts.

Is it safe to keep microwaving popcorn manually?

Watching and stopping by sound is the way many people do it, but never leave a bag unattended. Overheating popcorn is a fire risk.

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Still unsure about AccuPop Fail?

A technician diagnoses it on site and gives you the price in writing before any work starts.

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