Electrolux Range Error Code F019

The F019 error code on an Electrolux range indicates a communication failure between the oven user interface board and the oven relay board. Specifically, the user interface board is unable to send configuration data to the relay board during the initialization process. These two boards work together to coordinate oven functions: the user interface board handles input commands and display output, while the relay board controls the physical switching of heating elements and other high-voltage components. When the interface board cannot establish proper communication with the relay board, the oven cannot safely operate and triggers this fault code.

The diagnostic process begins by checking whether the user interface board itself is responsive. An unresponsive interface board points to a failure or power issue on that component directly. If the interface board is functional, the next step is verifying AC voltage at the relay board connector. Specifically, you should measure the AC voltage between pin 1 and pin 3 of connector J21 on the oven relay board. A correct reading in the 110 to 120V AC range confirms the relay board is receiving proper power, which shifts suspicion toward a communication wiring fault or a failed relay board. Missing or incorrect voltage at J21 points toward a power supply issue feeding the relay board.

Common root causes include a defective relay board that is receiving power but failing to respond to configuration commands, damaged or loose wiring in the communication harness between the two boards, or a failed user interface board that cannot transmit the configuration signal at all. Connection integrity at all harness connectors between these boards should be inspected carefully before replacing components.