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Error code reference

Equator Dishwasher Error Code E3

Malfunction of temperature sensor or of heating element.

Equator codesEquator dishwasher codes

Malfunction of temperature sensor or of heating element.

First step from the service manual

Check the temperature sensor and heating element for proper operation.

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 E3 means on a Equator dishwasher

The E3 error code on an Equator dishwasher indicates a fault in the wash temperature monitoring or heating system. Specifically, the control board has detected either an abnormal signal from the temperature sensor (also called a thermistor or NTC sensor) or a failure in the heating element responsible for bringing wash water to the required operating temperature. The control board continuously monitors sensor resistance values during a wash cycle, and when readings fall outside the expected range, or when water temperature fails to rise within a set time window, E3 is triggered.

The temperature sensor is a key feedback component: it reports water temperature to the control board so the system can activate or deactivate the heating element at the correct times. A failed or drifting sensor can send incorrect readings, causing the board to believe heating is not occurring even when it is. Conversely, an open or shorted heating element will prevent actual water heating, which the board detects when temperature rise targets are not met.

Common root causes include a damaged thermistor with resistance values outside the normal operating range, a broken or burned-out heating element, loose or corroded wiring connections between these components and the control board, or scale buildup on the heating element that reduces thermal efficiency over time. Diagnosis should begin with a visual inspection of the sensor and element, followed by continuity and resistance checks using a multimeter.

Source: manufacturer service documentation.

Common causes of E3

  1. 01

    Failed temperature sensor (thermistor)

    Part replacement

    The thermistor may have drifted out of its normal resistance range or failed entirely, sending incorrect temperature readings to the control board. Testing with a multimeter to check resistance values will confirm whether the sensor is faulty.

  2. 02

    Burned-out or open heating element

    Part replacement

    The heating element may have failed, preventing water from reaching target temperature. A continuity test with a multimeter will reveal an open circuit if the element has burned out.

  3. 03

    Loose or corroded wiring connections

    Wiring / connection

    Wiring harness connectors between the temperature sensor, heating element, and control board can loosen or corrode over time, causing intermittent or false fault signals. Inspect all connectors visually and reseat them firmly.

  4. 04

    Scale or mineral buildup on heating element

    Wiring / connection

    Heavy limescale deposits on the heating element can insulate it and reduce heating efficiency enough for the board to log a fault. Inspect the element surface for white or chalky buildup.

  5. 05

    Control board fault

    Part replacement

    If the sensor and heating element both test within normal parameters, the control board itself may be misreading signals due to an internal fault. This is the least common cause and typically diagnosed after ruling out all other components.

See the test procedure for each cause

Frequently asked questions about E3

What does E3 mean on a Equator dishwasher?
E3 on an Equator dishwasher indicates a malfunction with the temperature sensor or the heating element. The control board monitors water temperature throughout the wash cycle and triggers E3 when it receives an abnormal sensor signal or when water temperature does not rise as expected. This fault stops the cycle to prevent ineffective washing or potential damage to the appliance.
Can I fix the E3 error on my Equator dishwasher myself?
Some causes of E3 are DIY-friendly, such as reseating loose wiring connectors or descaling the heating element. However, replacing the temperature sensor or heating element requires basic electrical knowledge, a multimeter for testing, and comfort working around appliance components. If you are not confident working with electrical parts, a qualified technician should handle the repair.
Is it safe to keep using my dishwasher when E3 is displayed?
You should not continue running the dishwasher while E3 is active. The error means the machine cannot properly control or verify water temperature, which can result in poor cleaning performance and, depending on the nature of the fault, potential overheating risks. It is best to address the fault before resuming normal use.
How much does it cost to repair an E3 error on an Equator dishwasher?
Repair costs vary depending on which component has failed. A replacement thermistor typically falls in the lower cost range, while a new heating element is moderately priced. If a technician is involved, expect to add a service call and labor fee on top of parts costs. Total repair costs generally range from around $50 to $250 depending on the failed part and whether professional labor is needed.
Will resetting my Equator dishwasher clear the E3 error code?
A reset may temporarily clear the E3 code, but if the underlying fault with the temperature sensor or heating element has not been resolved, the error will return during the next wash cycle. Performing a reset without diagnosing and fixing the root cause is not a long-term solution. Always test and repair or replace the faulty component before relying on normal operation.

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