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Error code · Microwave

E22 Code on a Whirlpool Over-the-Range Microwave: Shorted Thermal Sensor Circuit

E22 means the thermal sensor circuit on a Whirlpool over-the-range microwave, such as model WMH31017HS, WMH32519HZ or WMH53521HZ, reported a short to the control board. Where E21 describes a break in the loop, E22 describes the…

Medium · inspection needed
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Code
E22
Appliance
Microwave
Brand
Whirlpool
Warranty
30-day workmanship

What E22 means

E22 means the thermal sensor circuit on a Whirlpool over-the-range microwave, such as model WMH31017HS, WMH32519HZ or WMH53521HZ, reported a short to the control board. Where E21 describes a break in the loop, E22 describes the reading collapsing as if the circuit were shorted. The thermal sensor, the appliance control board or the wiring may be involved. The display shows E22 and the oven can refuse to start or shut down a cycle.

Common causes of E22

  • Thermal sensor
  • Wiring pinched or touching metal
  • Appliance control board
✓ One safe check you can try

1. Switch off the circuit breaker for this microwave and leave it off for a minute. 2. Turn it back on. 3. Check the display for a minute to see that E22 does not return. 4. Run a brief cycle to verify the oven works. 5. If the code returns, keep the oven off and call us.

! Why to stop there
  • We test the thermal sensor reading and the wiring path to tell a failed sensor from a damaged harness.
  • A short can come and go with vibration or heat, which is why a code that clears can still return.
  • The price is in writing before any part is replaced.
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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E22E22 questions
What does a short in the thermal sensor circuit mean?

The control reads the sensor circuit as shorted. It may be the sensor, the wiring or the control board, and testing tells us which. Testing the circuit is the only way to separate those three.

Can I run the microwave with E22?

Better not, if it returns. The thermal sensor protects the oven from overheating, so we prefer to test it first. Better not to, if E22 returns. The thermal sensor helps protect the oven from overheating, so we prefer to test it first.

How long does a diagnosis take?

We test the circuit during the visit, explain the finding, and give a written price. If you agree, repairs carry a 30-day workmanship warranty. Bring up any burning smell you noticed.

Book a visit

Still seeing E22?

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

(713) 589-6107