9 common faults and maintenance methods of rice cookers

Fault 1: Plug in the power and the fuse will blow immediately
Causes and maintenance methods:
1. Water or rice soup enters the power socket of the rice cooker, causing a short circuit. In this situation, you can use a tissue to suck out the moisture from the socket, then use a hair dryer to dry the socket with cold air, and then use it again;
2. The power socket or plug of the rice cooker is short circuited due to surface carbonization caused by prolonged use. In this case, the carbonized layer on the surface can be gently ground off with fine sandpaper, then wiped clean with alcohol and dried.
Fault 2: No power supply
Causes and maintenance methods:
1. The insurance is burnt out. Replace the insurance (replace the 10A insurance for 300W-1000W, replace the 15A or 20A insurance for 1600W-3950W, or replace a connecting wire);
2. There is a problem with the circuit. View the route.
Fault 3: The insulation light is on, and the cooking light is not on
Causes and maintenance methods:
1. The heating plate is not heating, which may be due to a poor power cord. Check the wiring;
2. If the heating plate does not heat, it may also be due to the ignition and oxidation of the metal switch contacts. Use sandpaper or a small file to polish off the oxidized part of the contact point;
3. Heat up the heating plate, check the light plate, and if it's broken, just replace it with a new one.
Fault 4: Unable to cook
Causes and maintenance methods:
1. The power wire is open circuit. Check the power wire with the ohm gear of a multimeter;
2. The current limiting resistor is blown. At this point, the resistance can be checked using the ohm range of a multimeter. If the resistor is blown, it must be replaced by a current limiting resistor of the same model and cannot be directly replaced by a wire;
3. The heating tube is burnt out. The rice cooker without a current limiting resistor works for a long time and burns out the heating tube. At this point, use the ohm gear of the multimeter to check the heating tube. If there is an open circuit, it must be replaced together with the heating plate.
Fault 5: Rice cooker
Causes and maintenance methods:
1. Due to prolonged overloading or water ingress, the normally closed contacts of the insulation switch are sintered and stuck together. Although the rice has been cooked and the temperature limiter has also jumped down, the insulation switch continues to power on the heating tube, causing the pot to become sticky due to continuous heating. At this point, a small knife can be used to separate the contacts, and then the surface of the contacts can be cleaned with fine sandpaper.
2. The tripping temperature of the magnetic steel is incorrect, and the tripping temperature of the magnetic steel used for different sizes of pots is different. For example, using a 700W pot with a 2500W pot with magnetic steel can easily cause pot fouling. Replace the matched magnetic steel.
3. Due to heat transfer, heat dissipation, and other reasons, iron pot liners can easily burn, rust, and cause sand holes. It is best not to choose iron pot liners that look thick and heavy.
Fault 6: Boiling uncooked rice
Causes and maintenance methods:
1. The ratio of rice to water is incorrect, the water is insufficient. Adjust the ratio of rice and water and try again.
2. Generally, it is caused by the weakening of the permanent magnetic ring in the temperature limiter. At this point, the temperature limiter of the rice cooker can be disassembled to check whether the magnetic ring is broken and how the suction is. If the permanent magnetic ring is broken, a temperature limiter of the same model must be replaced; If the suction decreases, the temperature regulating screw on the temperature limiter can be adjusted by 1/4 turn at a time, adjusting once to try cooking.
3. There is a foreign object at the connection between the bottom of the pot and the heating plate. Clean up any dirt or foreign objects;
4. The pot liner is deformed, or the heating plate is deformed due to strong heating by humans, resulting in the pot liner being unable to come into contact with the heating plate. Shaping, replacing, or replacing the heating plate of the pot;
5. Magnetic steel has unavoidable suction or poor elasticity. Replace with new magnetic steel.
6. The temperature control is broken. Replace and replace the temperature control (1600W-2000W replace 10A temperature control 2800W-3950W replace 15A-20A temperature control)
Reminder: If the electric rice cooker trips in advance, it indicates that there must be some cause or malfunction. It is necessary to first investigate the cause and not blindly press and hold the button to force heating, as it may burn out the heating plate or cause other hazards.

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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