It must be said that the rice cooker has gradually become one of the kitchen utensils in people's homes, because in addition to cooking delicious rice, the other function of the rice cooker is to Cooking dishes, such as stewing, simmering, etc., can be used to cook meals. The most important thing is that when using a rice cooker to cook rice, on the one hand, it can keep the heat, and on the other hand, it is pollution-free and clean. This saves us time and effort in cleaning when cooking. Then the following is the rice cooker Xiaotu introduced to you. It has malfunctioned. How to repair it?

Introduction to rice cooker failures and maintenance methods:

1. The rice cooker does not heat up

Causes and maintenance:

1. The main reason for the burnout of the fuse is that there are foreign objects on the bottom of the pot or the heating plate. The inner pot is not in full contact with the heating plate. The temperature of the heating plate is too high, which causes the fuse to burn out and protects the heating plate. At this time, just remove the foreign matter. Just wipe it clean (never throw away the fuse resistor and not use it). ?

2. If the bimetallic sheet is used for insulation, the contact adhesion causes constant heating and burns out the fuse resistor. At this time, the bimetallic sheet must be replaced.

3. Excessive temperature caused by the deformation of the inner pot or the deformation of the heating plate will cause the fuse to burn. The deformation of the inner pot can be carefully repaired and it is still usable. The deformation of the heating plate can only be replaced.

4. The heating plate is open circuit.

5. For those with selector switches, it is mostly caused by damage to the switch and should be replaced.

6. Internal wire break: Find the break and connect it.

2. The rice will jump when it is not cooked or the rice will not jump when it is burnt

Causes and maintenance:

1. The temperature-limiting magnetic cylinder loses magnetism or the magnetic It is caused by the spring in the cylinder and the magnetic cylinder must be replaced. ?

2. The main contact is stuck and the mechanism is jammed. At the same time, deformation of the heating plate and the inner pot may also cause it to jump before cooking. Specific analysis is also required during maintenance.

3. At present, rice cookers that use magnetic steel to drive a micro switch have the highest failure rate, which manifests as failure to heat or burning the rice. The main reason is that the micro switch has insufficient power and has to be replaced.

No insulation? The main reason is that the bimetallic sheet or insulation sheet is broken. When the bimetallic sheet is broken, there will also be an abnormal fault in the indicating circuit.

4. The rice cooker always jumps by itself

Cause and maintenance: There are two possibilities? 1. Improper combination of water and rice, that is, too little water; 2. Electric rice There is a fault in the wire line of the pot; if the problem is found to be the latter, please pay more attention; repair it in time;

5. Plug in the power plug, the power fuse will blow out immediately

Cause and maintenance: 1. Water or rice soup entered the power socket of the rice cooker, causing a short circuit. In this case, you can dry the water inside the socket and continue using it. 2. The surface of the rice cooker power socket or plug is carbonized and short-circuited due to long-term use. In this case, you can use fine sandpaper to remove the carbonized layer on the surface and wipe it clean with alcohol.

6. Can’t cook? Reasons and troubleshooting:

Causes and troubleshooting: 1. The power wire is broken. Use the ohms dial on your multimeter to check the power leads. 2. The over-temperature protector is blown. At this time, you can check the resistance with the ohm dial of the multimeter. If the resistor is fused, it must be replaced with a current-limiting resistor of the same type, and cannot be directly replaced with a wire. 3. The heating tube is burned out. A rice cooker without an over-temperature protector may burn out the heating tube if it works for a long time. At this time, use the ohm block of the multimeter to check the heating pipe. If it is open, it must be replaced together with the heating plate.

7. Cooking rice with uncooked rice

Cause and maintenance: This fault is generally caused by the weakening of the magnetic force of the permanent magnetic ring in the temperature limiter. At this time, you can disassemble the temperature limiter of the rice cooker and check whether the magnetic ring is broken and how the suction force is. If the permanent magnetic ring is broken, the temperature limiter of the same model must be replaced; if the suction force is reduced, the temperature adjustment screw on the temperature limiter can be adjusted 1/4 turn at a time, and try cooking once.

8. Cooking simmered rice

Cause and repair: This fault may be that the normally closed contacts of the heat preservation switch are sintered and stuck together. Although the rice has been cooked, the temperature limiter also trips. But the heat preservation switch continued to energize the heating pipe, and the rice was scorched. At this time, you can use a knife to separate the contacts, and then use fine sandpaper to clean the surface of the contacts.

9. The meal cannot be kept warm after cooking

Cause and repair: This fault may be that the surface of the normally closed contact of the heat preservation switch is dirty or ablated, causing its contact to contact the resistance If it is too large, the contacts will be closed and the circuit will not flow, the heating tube will not heat, and the rice cooker will not be able to keep warm. At this time, you can use fine sandpaper to clean the contact surface and then coat it with a layer of tin. If it still doesn't keep warm, you can replace the keep warm switch.

10. The rice cooker trips before the rice is cooked

Cause and maintenance: First check each temperature control switch. The circuit of a rice cooker is generally relatively simple. It mainly consists of a thermal temperature control switch, a heat preservation switch, a resistance wire, an indicator light and other components. After inspecting components one by one, it was found that the thermal temperature control switch had poor performance, causing the thermal temperature control moving and static pieces to not be tightly connected.

11. Electricity leakage in the rice cooker

Cause and maintenance: Disconnect both ends of the heating plate and test with a meter to see if the heating plate is leaking. If so, replace it. Heating plate. You can find out the leaking components by simply shaking the insulation resistance of each component separately. Set the multimeter to the highest resistance setting, touch one test lead to the heating plate of the rice cooker, and place the other test lead on the lead of the component under test. Check whether the hands of the watch are oscillating. It's just that it's best to use an analog multimeter, because the digital multimeter cannot display the resistance value when it exceeds the range, and the needle of the analog multimeter can rotate slightly when it exceeds the range. When the leakage resistance is large, the multimeter may not be able to correctly locate the leakage location. In addition, the plug may be broken, just replace it; also check whether there are black marks on the bottom of your rice cooker and clean it. Be careful to clean it when it is not plugged in!

12. The power will be turned off after heating for a while, and then it will be automatically powered on after a while

Because there is a temperature-sensitive metal piece inside to control Automatic switching on and off of temperature. The temperature control switch is broken, just replace it with a new one.

The above is Xiaotu’s brief introduction to the maintenance methods and failure causes of rice cookers. I hope it will be helpful to everyone when using rice cookers. In fact, when there is a problem with our rice cooker, on the one hand, we can analyze where the fault is based on the repair method shared by Xiaotu, and then repair it, which is more straightforward. On the other hand, if we have repaired it through the above methods and there is still a problem with the rice cooker, it should be a hardware failure, and we should ask a professional to repair it.

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