Direct answer
On the covered Whirlpool over-the-range microwave, E22 means Whirlpool documents the cause as Thermal Sensor, the Appliance Control Board — Whirlpool's own wording. First, reset power to the product: The Thermal Sensor circuit reported a short to the control.
Definition versus diagnosis
The display names a detected condition—not an automatically failed part.
What this covers
- Whirlpool over-the-range microwave covered by the cited source
- Displayed code or documented alias: E22
- The exact operating state described by the manufacturer
What it does not cover
- ×Another product type or original-manufacturer platform
- ×A visually similar but different code
- ×Internal live electrical, sealed-system, gas, battery-cell or control-board repair
Match every character and the exact product
ReversiblePhotograph the complete display and product label. This record covers E22 on Whirlpool over-the-range microwaves with electronic controls. A microwave stores high voltage in its capacitor even unplugged — never remove the outer case or attempt internal repair.
Preserve the failure state
ReversibleReset power to the product: The Thermal Sensor circuit reported a short to the control. Record the operating stage, recent change and what still works before clearing the message.
Correct only the documented fault domain
ReversibleWhirlpool directs a documented reset; arrange service if the display returns. A power reset is the whole of what Whirlpool publishes for this code: remove power for 1 minute, restore it, and watch whether the code returns. If it does, the reset is not the answer and repeating it will not make it one.
Verify once, then respect the service boundary
ReversibleRepeat only the shortest safe action that reaches the original stage. Whirlpool specifies a 1 minute power interruption for this code, not an arbitrary one. If E22 returns, stop repeated resets and use model-specific manufacturer support.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What does E22 mean on a Whirlpool over-the-range microwave?+
Whirlpool documents the cause as Thermal Sensor, the Appliance Control Board — Whirlpool's own wording.
Can I reset E22 without fixing the cause?+
A reset may hide the display temporarily but does not correct the documented fault. Record the code and complete only the safe checks first.
Why is the complete model number required?+
Manufacturers reuse characters across platforms. The model number determines which official table, controls and service boundary apply.
When should I stop?+
Stop for smoke, arcing, burning odor, uncontrolled water, gas odor, battery swelling, extreme heat or any condition the manufacturer directs to professional service.
Answer for the exact device and software version shown above.