Electrolux Oven Error Code ECEd

The ECEd error code on an Electrolux oven indicates a failure in the bottom cavity thermocouple circuit, identified internally as TCAV DWN. The thermocouple is a temperature-sensing device located in the lower oven cavity that generates a small voltage signal corresponding to the cavity temperature. The Appliance Control Unit (ACU) monitors this signal continuously to regulate heat during cooking cycles. When the ACU detects that the thermocouple signal is absent, out of range, or implausible, it logs the ECEd fault and blocks most cooking operations to prevent uncontrolled heating.

The fault will block normal oven cycles from running, with one exception: steam cycles operating at 100 degrees Celsius are permitted to continue. This selective block reflects the control board's logic for managing lower-temperature steam functions that pose less risk when temperature feedback is compromised. The primary components involved in this fault are the thermocouple sensor itself, the wiring harness connecting it to the ACU, connector X18 on the ACU board, and the ACU itself.

Diagnosis begins by checking the thermocouple signal output to confirm whether the sensor is generating a proper reading. Connector X18 on the ACU is the specific interface point for the bottom cavity thermocouple circuit and should be inspected for corrosion, damaged pins, or loose seating. If the connector and wiring are intact and the thermocouple signal is absent or erratic, the thermocouple sensor itself is the most likely failed component. If a confirmed good thermocouple and secure connections still produce the fault, ACU failure should be considered.