1. Not enough water. If you don't add enough water, the steam in the rice cooker can't fully steam the rice. The solution is to add enough water to the right level.
2. The heating capacity of the rice cooker is insufficient. Different models of rice cookers have different power. If your rice cooker has low power, it may take longer to cook. The solution is to continue cooking according to the time and quantity indicated in the instructions.
3. The rice was not added according to the instructions. Different brands of rice may need different rice-water ratios. If the brand is unfamiliar with rice, or rice is not added according to the instructions, the rice may not be cooked well. The solution is to add rice according to the instructions.
4. The water quality is too good or too soft. Too hard or too soft water will cause rice to be undercooked. The solution is to use pure water, or the ratio of rice to water can be adjusted appropriately.
5. Internal failure of the rice cooker. If the above situation is eliminated, but the rice is still not cooked, it may be caused by the internal failure of the rice cooker. The solution is to contact a professional for maintenance.
In short, if you find that the rice is not cooked in the process of using the rice cooker, first rule out the possibility of improper operation, and then investigate according to the above method.