Analysis of 8 common faults in rice cookers

Fault 1: Plug in the power plug and the power fuse will immediately blow
Reason and maintenance: The 107474404 power socket is filled with water or rice soup, causing a short circuit. In this case, water can be dried in the socket after drying; Due to long-term use, the surface of the power socket or plug of the rice cooker may experience a short circuit. In this case, the surface carbonization layer can be wiped off with fine sandpaper and wiped clean with alcohol.
Fault 2: Unable to keep warm after cooking the meal
Reason and maintenance: This fault may be due to the surface of the normally closed contacts of the insulation switch being dirty or burned, resulting in excessive contact resistance of the contacts, causing the contacts to close and the circuit to be inaccessible. The heating tube will not heat up, and the rice cooker cannot be insulated. At this point, the contact surface can be cleaned with fine sandpaper and coated with a layer of tin. If it still doesn't keep warm, you can replace the insulation switch.
Fault three: cooking burnt rice
Reason and maintenance: This fault may be caused by the normally closed contacts of the insulation switch sticking together. Although the rice was cooked, the temperature limiter also jumped up, but the insulation switch continued to activate the heating tube, causing the rice to be smashed. At this point, you can use a small knife to separate the contacts and then clean the surface of the contacts with fine sandpaper.
Fault 4: Boiling uncooked rice
Cause and maintenance: This fault is usually caused by the weakening of the permanent magnet ring in the temperature limiter. At this point, the temperature limiter electric rice cooker can be disassembled to check for damage and suction of the magnetic ring. If the permanent magnet ring is broken, a temperature limiter of the same type must be replaced; If the suction decreases, adjust the temperature adjustment screw on the temperature limiter by 1/4 turn each time and adjust the cooking time once.
Fault 5: Unable to cook
Reason and maintenance: 1. The source line is disconnected. Check the power cord with an ohm block multimeter; 2. The current limiting resistor is blown. The resistance can be checked using an ohm block multimeter. If the resistor blows, it must be replaced with a current limiting resistor of the same type. It cannot be directly replaced with wires; 3. The heating tube has exploded. An electric rice cooker without a current limiting resistor worked for a long time and burned out the heating tube. At this point, use a multimeter ohmmeter to check the heating tube. If it is open, it must be replaced with a heating plate.
Fault 6: The insulation light is on, and the cooking light is not on
Reason and maintenance: 1. The heating plate is not heating and the power cord is not good; 2. If the heating plate is not heated, usually the metal plate switch contacts are ignited and oxidized, as long as the contacts are polished with sandpaper or a small trowel; 3. Heat the heating plate and check the cooking indicator light and current limiting resistor.
Fault 7: The rice has burnt yellow, and the magnetic steel lever cannot fall, automatically resetting
Reason and maintenance: 1. In the magnetic steel temperature limiter, if the spring is tightened, there is insufficient elasticity or loss of elasticity, the spring performance should be checked and the magnetic steel temperature limiter should be replaced; 2. Foreign objects stick to the dead spring, remove them, or replace the magnetic steel temperature limiter; 3. The magnetic steel rod is not flexible, skewed, or suspended. Check the installation of the magnetic steel temperature limiter and lever bracket, and adjust or replace the magnetic steel rod components.
Fault 8: The circuit board cannot automatically enter the state of stewing and insulation
Reason and maintenance: 1. The main circuit board is damaged, replace the main circuit board; 2. The main temperature controller is abnormal, replace it.

The above content is organized by Superb heater Company, super heater. Mainly professional production: industrial heating elements, temperature measuring elements, production equipment, accessories, and raw materials such as tubular heaters, tubular heaters, belt heaters, ceramic heaters, silicone rubber heaters, thermocouples, etc.

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