The rice cooker lid has to be closed and the dial knob has to be in the lock position (turing on the pressure lamp) before cooking can start. There are two tiny wires sending signal to the main controller to indicate that the cooker is in lock position. The wires are vey tiny and they can break over the years as a result of opening and closing the lid many times. When these wires are broken, the main controller cannot detect the lock position and will give E01 Error.
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