KitchenAid Range Error Code F1 E8

F1 E8 indicates the main control board has detected improper keypad feedback from the power board supply lift. The control board monitors communication signals from the power board continuously. When those signals fall outside expected parameters or become erratic, the control board logs F1 E8 and typically disables operation to prevent unpredictable behavior. The fault is rooted in the power board itself or in the signal path between it and the main control board.

For homeowners, this error means the electronic board that supplies and regulates power to key oven systems is sending incorrect signals back to the control panel. Think of it as the oven's brain receiving garbled information from a core component and refusing to operate normally until the issue is resolved. You may notice the oven becomes unresponsive, displays the code on startup, or shuts down mid-operation.

The primary recommended repair is replacement of the power board. Because the fault is specifically tied to improper feedback from that board, troubleshooting typically begins and ends there rather than with the keypad or main control board. Wiring between the two boards should be inspected before condemning the power board, but the board itself is the most common point of failure for this code.