1. If only the indicator light of the rice cooker does not light up and the heating plate does not generate heat, the first consideration is that the power cord of the rice cooker is in poor contact. If the power cord contacts normally, it may be because the overtemperature fuse of the rice cooker is blown, which leads to e3 failure of Jiuyang rice cooker. 2. If the indicator light of the rice cooker is on and the heating plate does not generate heat, it is considered that the two electrode wires of the heating plate cannot be contacted or the heating wire is disconnected. Suggested solution: 1. If the power cord plug fails to contact, you can first pull out the power cord from the socket and check whether the fork of the power cord is normal, then plug the power cord plug into the socket again and press it tightly to avoid cracks. At this time, check whether the rice cooker is normal. If it is still in a fault state, check whether there are rice grains sticking to the bottom of the inner liner of the rice cooker, which leads to the overheating of the heating plate and the over-temperature fuse being blown. If so, just replace a fuse to solve the problem. 2. If the two electrode wires of the heating plate of Jiuyang electric cooker are not in good contact or the electric heating wire of the heating plate is disconnected, the corresponding accessories need to be replaced to solve the problem. If the problem is still displayed after replacement, the bottom electronic board of the electric cooker needs to be completely replaced.