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Error code reference

Electrolux Microwave Error Code E-22

Short error of thermal sensor.

Electrolux codesElectrolux microwave codes

Short error of thermal sensor.

First step from the service manual

Check thermal sensor for short circuit.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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What E-22 means on a Electrolux microwave

The E-22 error code on an Electrolux microwave indicates a short circuit condition detected in the thermal sensor circuit. The thermal sensor, sometimes called a thermistor, is a temperature-monitoring component responsible for tracking internal cavity or magnetron temperatures during operation. When the control board detects that the sensor's resistance has dropped to near zero or has otherwise shorted, it triggers the E-22 fault and halts operation to prevent potential overheating or component damage.

A properly functioning thermal sensor exhibits a specific resistance value that changes predictably with temperature. A short circuit causes the sensor to report an abnormally low resistance reading, which the control board interprets as an extreme temperature condition or an outright sensor failure. This can result from physical damage to the sensor itself, degraded insulation on the sensor wiring, or a pinched or melted wire harness making contact with the microwave chassis or other conductive surfaces.

Diagnosing E-22 requires checking the thermal sensor and its associated wiring for a short circuit condition. Using a multimeter to measure the resistance across the sensor terminals will reveal whether the sensor has failed internally. The wiring harness running from the sensor to the control board should also be inspected for any signs of heat damage, abrasion, or contact with metallic surfaces. If the sensor reads near zero ohms or the wiring shows visible damage, replacement of the faulty component is necessary to resolve the fault.

Source: manufacturer service documentation.

Common causes of E-22

  1. 01

    Failed thermal sensor

    Part replacement

    The thermal sensor itself has developed an internal short circuit, causing its resistance to drop abnormally low. Testing the sensor terminals with a multimeter will show a near-zero ohm reading if the sensor has failed internally.

  2. 02

    Damaged sensor wiring harness

    Part replacement

    Heat exposure or physical abrasion can degrade the insulation on the wires connecting the thermal sensor to the control board, allowing bare conductors to contact each other or the metal chassis. Inspect the full length of the harness for melted, pinched, or frayed insulation.

  3. 03

    Loose or corroded connector at the sensor

    Wiring / connection

    The connector attaching the thermal sensor wiring to the sensor itself can develop corrosion or a poor seating that causes unintended electrical continuity. Disconnecting and inspecting the connector pins for corrosion or deformation can reveal this issue.

  4. 04

    Moisture or contamination in the sensor circuit

    Wiring / connection

    Steam or grease buildup inside the microwave cavity can reach sensor wiring and create a conductive path that mimics a short circuit. Cleaning and thoroughly drying the sensor area and connectors may resolve the fault if no physical damage is present.

  5. 05

    Control board fault

    Part replacement

    In rare cases, a faulty control board may incorrectly detect or report a short in the thermal sensor circuit even when the sensor and wiring are intact. This should only be considered after the sensor and wiring have been tested and confirmed good.

See the test procedure for each cause

Frequently asked questions about E-22

What does E-22 mean on a Electrolux microwave?
The E-22 code on an Electrolux microwave signals a short circuit detected in the thermal sensor circuit. The thermal sensor monitors internal temperatures during operation, and when the control board detects an abnormally low resistance reading from the sensor, it stops operation and displays this fault. The issue can originate from a failed sensor, damaged wiring, or contamination in the circuit.
Can I fix the E-22 error on my Electrolux microwave myself?
A knowledgeable DIYer can diagnose this error by using a multimeter to test the thermal sensor's resistance and visually inspecting the wiring harness for damage. If the sensor reads near zero ohms or the wiring is visibly damaged, replacement of the faulty component is required. However, microwave repair involves high-voltage components such as the capacitor, which can retain a lethal charge even when unplugged, so proper precautions are essential before opening the unit.
Is it safe to use my Electrolux microwave while E-22 is displayed?
No, you should not continue using the microwave while E-22 is active. The thermal sensor is a safety component that prevents overheating of the magnetron and internal cavity. Operating the unit without a functioning thermal sensor removes a key protection mechanism and could lead to component damage or a fire hazard.
How much does it cost to repair an E-22 error on an Electrolux microwave?
Repair costs vary depending on what is found during diagnosis. A replacement thermal sensor typically costs in the range of $10 to $40 for the part alone. If professional labor is involved, total repair costs including diagnostics and installation can range from $75 to $200 depending on the service provider and the extent of any wiring damage.
Will resetting my Electrolux microwave clear the E-22 error?
A power reset by unplugging the microwave for several minutes may temporarily clear the E-22 display, but the fault will return if the underlying short circuit in the thermal sensor circuit has not been corrected. The error code is triggered by a measured electrical condition, not a software glitch, so a reset alone does not resolve the root cause. The thermal sensor and its wiring must be inspected and repaired or replaced to permanently clear the fault.

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