1, failure phenomenon: When using the rice cooker, the fuse is blown as soon as it is plugged in. Maintenance: When repairing the electric pressure cooker, first check whether there is water in its power socket. If the power socket is flooded, it is easy to cause a short circuit. At this time, we only need to blow dry the water in A Jing's socket to ensure that the power socket is dry, and we can continue to use it. 2, failure phenomenon: the rice cooker can not be kept warm after cooking. Maintenance: If there is such a phenomenon, first check whether the normally closed contact of the insulation switch is dirty or burnt. If the contact is dirty or damaged, it is easy to make the contact resistance of the contact too large, thus causing the contact to close and the circuit to be different. At this time, its heating tube will not heat up, and the rice cooker will not keep warm. At this time, clean the contacts with fine sandpaper and plate them with a layer of tin for further use. 3. Failure phenomenon: When cooking, the rice cooker cooked the rice. Maintenance: The fault may be caused by contact sintering of the insulation switch. At this time, although the rice has been cooked, its insulation switch is still energizing the heating pipe at that time, so that the rice is easy to cook. During maintenance, you can separate its contacts with a knife, and then clean them with fine sandpaper. 4. Fault phenomenon: The electric pressure cooker can't work normally in use. Maintenance: Common reasons why the rice cooker can't work: open circuit of active conductor and current limiting resistance.