F2/E6 fault code implies a Cancel key drive line open. This means the key pad ribbon connector could be loose or dirty where it connects to the oven control board or a faulty oven control board.
Press Cancel. If the error code returns after 60 seconds, replace the key pad. If it continues to display F2/E6 after replacing the key pad, replace the oven control board. The parts can be ordered from
Sears PartsDirectNOTE: Disconnect the power supply from the oven before servicing.

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