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The component RY 155 in the circuit of the rice cooker is the first component of the power supply. What is a component and what is its function?
It's temperature insurance, also called over-temperature fuse. I've seen it, and the common maintenance is 185 degrees. Regular installation of the heating plate near the rice cooker is to prevent the high temperature from burning out, melting the aluminum heating plate and baking the plastic parts when the rice cooker fails. Therefore, when the temperature of the rice cooker exceeds 185 degrees, the overheating fuse is blown, the power supply is cut off, and the heating is stopped to prevent the rice cooker from overheating.