Electrolux Dryer Error Code E33

Error code E33 on an Electrolux dryer is stored in the last alarm memory and is triggered when diagnostics position 8 fails the conductimetric sensor open circuit check. The conductimetric sensor, also called a moisture sensor or conductivity sensor, is responsible for detecting the moisture level of clothes inside the drum by measuring electrical conductivity between two metal sensor bars. When the control detects an open circuit condition in this sensor circuit during the diagnostic check, it logs E33 to indicate that the sensor loop is broken and reliable moisture readings cannot be obtained.

An open circuit in the conductimetric sensor system means that electrical continuity between the sensor bars and the control board has been interrupted somewhere along the circuit path. This could occur at the sensor bars themselves, at any connector in the wiring harness between the sensor and the control board, or within the control board's sensor input circuitry. Because this is flagged as an open circuit failure rather than a short or out-of-range reading, the fault points specifically to a complete break in the signal path rather than a degraded or contaminated sensor.

When E33 is active, the dryer cannot accurately determine when clothes are dry, which typically causes the dryer to either run for a fixed default time or terminate cycles prematurely. Diagnosing this code requires checking continuity of the sensor bars, inspecting the wiring harness for breaks or disconnected connectors, and verifying the control board's sensor input terminals for proper connection and integrity.