The rice cooker is powered on and does not heat up

Reason: It may be that the metal contacts inside the rice cooker are damaged, and you need to contact after-sales service; It may be that the temperature fuse of the rice cooker has blown out and the fuse needs to be replaced; It may be that the temperature control sensor of the device is damaged, and you need to contact after-sales service. Product Tips:

Rice cookers need to be cleaned in time after use, as food residues may corrode the inner liner; Rice cookers have many functions and different modes. Rice cookers can be purchased as needed. For a long time, cut off the power to the rice cooker; When choosing a rice cooker, you should also consider whether it is energy-efficient; Rice cookers have a certain lifespan and need to be replaced regularly.

The answer applies to most brands, such as Joyoung JYF-30FE0.

The reason why the rice cooker is not heating may be that the fuse resistor is burned out, and the fuse resistor of the rice cooker is burned out, which may be because there is a foreign object on the bottom of the pot or the heating plate.

If the temperature of the heating plate is too high, it will cause the fuse to burn out, but at the same time it protects the heating plate of the rice cooker.

Related Notes:

The main structure of an ordinary rice cooker is composed of a heating plate, a temperature limiter, a heat preservation switch, a lever switch, a current limiting resistor, an indicator light, a socket, etc.

Heating plate. This is the main heating element of the rice cooker. It is an aluminum alloy disc with an embedded electric heating element, and the inner pot is placed on it, and it can be seen when the inner pot is removed.

Thermostat. It is also called magnetic. It is equipped with a permanent magnetic ring and a spring that can be pressed and positioned on the heating plate. When cooking, when pressing the rice cooking switch, the suction of the magnet drives the lever switch to keep the power contact on.

When cooking rice, the temperature of the bottom of the pot continues to rise, the suction of the permanent magnetic ring weakens with the increase of temperature, when the water in the inner pot is evaporated, the temperature of the bottom of the pot reaches 103 2, the suction of the magnetic ring is less than the elastic force of the spring on it, the temperature limiter is pushed down by the spring, driving the lever switch, cutting off the power supply.

Insulation switch. Also known as a thermostat. It consists of a spring plate, a pair of normally closed contacts, a pair of normally open contacts, and a bimetal sheet.

When cooking rice, the temperature inside the pot rises, and the two metal sheets that make up the bimetal sheet have different thermal expansion rates, resulting in the bimetal sheet bending upward. When the temperature reaches more than 80, under the impetus of the upwardly bent bimetal sheet, the spring plate drives the normally open and normally closed contacts to convert, thereby cutting off the power supply of the heating element and stopping the heating.

When the temperature in the pot drops below 80, the bimetal sheet gradually cools and recovers, and the normally open and normally closed contacts are switched again, and the heating element is connected to heat up. Repeatedly, the heat preservation effect is achieved.

The above content reference: Encyclopedia - Rice cooker.

If the rice cooker is not heated, first make sure that there is no problem with the wire, and then see if the temperature insurance is burned out.

Ordinary rice cookers are mainly composed of a heating plate, a temperature limiter, a heat warmer, a fuse power connector, a heat preservation indicator and a resistor, a rice cooking indicator and a resistor. If the thermostat or warmer is damaged, the rice cooker will not work when it is powered on.

In particular, the contacts in the thermostat are consumables, and if you have the ability, you can open the bottom three screws of the rice cooker to see if its contacts are blackened or burned. If the capacity is insufficient and the replacement is difficult, it can be sent to the after-sales warranty or professional maintenance organization for repair.

When the temperature is lower than 60, the warmer is connected to the power to make the heating plate work, when the temperature of the heating plate reaches 80, the internal thermal expansion and contraction of the warmer is disconnected, and the power supply to the heating plate is stopped. If the heating plate is damaged, the process will not work properly. If you have the ability, you can use a multimeter to measure whether the heating plate has a resistance value, if the resistance value is infinity, it means that the rice cooker is not working because the heating plate is damaged.

1. It may be that the fuse resistor is burned out, and there are foreign objects on the bottom of the pot or the heating plate, so that the inner pot of the rice cooker can not be fully in contact with the heating plate, if the temperature of the heating plate is too high, it will cause the fuse resistor to burn out, and carefully check the foreign matter at the bottom of the rice cooker or the heating plate, remove the foreign body and clean the bottom of the pot or the heating plate, and be careful not to shake off the fuse resistor.

2. If you do not pay attention to the use of the rice cooker, resulting in the deformation of the inner pot or the deformation of the heating plate, it will also cause the temperature to be too high, which will cause the insurance to be burned.

3. If the heating plate of the rice cooker is in an open state, it will also make the rice cooker unable to heat, so it should be sent to the repair shop for inspection.

Did you press the start button?

1. The power supply is not energized, and the internal fuse is blown out;

2. The connecting wire at the power plug or socket is loose or corroded;

3. The power lead is broken, check the power lead, check the two wires with a multimeter, if the resistance value of the two wires or one of them is infinite, it means that the power lead is broken inside;

4. After connecting the power lead, before pressing the switch button, the indicator light does not light up and the pot is not hot, which means that there are debris or oxides between the dynamic and static contacts of the heat warmer;

5. If the heating wire in the electric heating pipe is broken, check the two leads of the electric heating pipe with a multimeter file, if it is not conducted, it means that the internal circuit of the electric heating pipe is broken;

6. Open the bottom cover and use the multimeter ohm file to measure the resistance value at both ends of the electric heating plate, if it is infinite, it means that the electric heating plate is broken.

If the rice cooker is not heated, see if the insulation indicator is on, if it is not lit, it proves that the rice cooker is not electric, if it is on, one is that the switch is not turned on (the contact is not connected), and the other is that there is a thermistor in the rice cooker (used to protect the rice cooker) with the change of temperature, the resistance value is changing, in general, it is mostly damaged, and there are 1 2 yuan on the market, you can buy it back and save some money.

Do you have a multimeter? If not, it's not easy. Borrow one to try.

If the multimeter pointer or number does not move, then the heating plate is burned out. If the pointer is swinging, the heating plate is good.

This changes the multimeter to AC voltage gear (V) Note that it is a red letter, and there is a letter below it, 250V gear. Don't use any other gear.

Also, pay special attention to safety. With the power on and the rice cooker pressing tablet down, test the two binding posts of the heating plate. If the multimeter pointer does not move or moves very little. Then the control circuit is faulty. Repairs are more cumbersome. It's better to ask a professional for help.

What to do if the rice cooker is sometimes heated and sometimes not.

1. The reason why the rice cooker is not heated may be that the resistance of Bao Xiangbu is burned out, and the insurance resistance of the rice cooker may be burned out because there are foreign objects on the bottom of the pot or the heating plate, so that the inner pot of the rice cooker can not be fully in contact with the heating plate, if the temperature of the heating plate is too high, it will cause the safety resistance to burn out, but at the same time it protects the heating plate of the rice cooker, and it is necessary to carefully check the bottom of the rice cooker or the foreign body of the heating plate, Remove foreign objects and clean the bottom of the pot or heating plate, and be careful not to shake off the safety resistor. The bimetal sheet used to keep the heat of the rice cooker is accidentally adhered to the contacts, which is easy to cause the fuse to be burned out due to continuous heating, so pay attention to replacing the bimetal sheet. 2. If you do not pay attention to the use of the rice cooker, resulting in the deformation of the inner pot or the deformation of the heating plate, it will also cause the temperature to be too high, which will cause the insurance to be burned, if this is the case, you should carefully trim the inner pot of the rice cooker to restore the original state, and the repaired inner pot can still be used, but the heating plate that has been deformed can not be used, and it should be replaced with a new one 3. The heating plate of the rice cooker is in an open circuit state, which will also make the rice cooker unable to heat, and it should be carefully checked and maintained.

Reason: It may be that the metal contacts inside the rice cooker are damaged and need to be repaired after sales; It may be that the temperature fuse of the rice cooker is blown out and the fuse needs to be replaced; It may be that the temperature control sensor of the device is damaged and needs to contact the after-sales service for repair.

Product use skills: 1. The rice cooker needs to be cleaned in time after use, as food residues may corrode the inner tank.

2. The rice cooker has many functions and has different modes, and you can quietly buy the rice cooker according to the needs of use.

3. If the rice cooker is used for a long time, the power supply should be cut off.

4. When buying a rice cooker, you should also consider whether it is energy-efficient.

5. The rice cooker has a certain service life and needs to be replaced regularly.

Data development: Rice cookers are also known as electric cookers and rice cookers. It is a cookware that uses electrical energy to convert into internal energy, which is easy to use and has a variety of functions such as steaming, boiling, stewing, and simmering food.

Common rice cookers are divided into three categories: automatic heat preservation, timed heat preservation and new microcomputer control. The heating plate is the main heating element of the rice cooker, which is an aluminum alloy disc with an electric heating element embedded in it.