HOW TO REPAIR AND DIAGNOSE A RICE COOKER MACHINE

RICE COOKER

A rice cooker is an electrical machine which is use purposely for cooking rice. A simple rice cooker monitors the boiling point of water and take an action based on a set point.

HOW IT WORKS

A simple rice cooker  has a thermal fuse, a heating elements, two temperature sensors, and two light indicators(for cook and warm)

1.Thermal Fuse

Thermal fuse is a heat-sensitive device designed to protect electrical appliances and equipment from overheating and burns. it open circuit when the temperature exceed  the rated operating temperature.

how to diagnose the the thermal fuse

Use a multimeter to test for continuity


2. Magnetic Temperature Switch

It is use in the cook stage of the rice cooker.
The user press the switch to the cook state and the magnet hold it in that state until the temperature reaches or exceed the set boiling point where the magnet then demagnetize at that temperature and open the circuit thus returning the switch state back to warm.


3. Positive Temperature Coefficient (PTC) Thermistor Sensor

It is use in the warm stage of the rice cooker.
In the warm state; the thermistor (positive  temperature coefficient meaning it's resistance increases with temperature ) monitors the temperature of the heater and if it is high, its resistance increases thereby decreasing the  amount of current flowing through the heater hence the heat reduces and vice versa.

4. Heating Element

The heating element converts electrical energy into heats(it act as a resistive load which dissipate heat as current flows through )
the resistance of the heating can be calculated given the power rating of the rice cooker $P_{rated}$ and voltage rating \(V_{rated}\), the resistance of the heater can be calculated as: \[R=\frac{V_{rated}^2}{P_{rated}}\]

The rice cooker shown here \(P_{rated}=500 W\) and \(V_{rated}=220V\) so the resistance of this cooker will be \(R=\frac{220^2}{500}\) which is \(R=96.8\text{ Ohms}\)

If the resistance measured deviate more from the calculated value that means the heating element is Faulty.


HOW TO REPAIR AND DIAGNOSE A RICE COOKER MACHINE HOW TO REPAIR AND DIAGNOSE A RICE COOKER MACHINE Reviewed by Zakaria Mohammed on February 10, 2017 Rating: 5

27 comments :

  1. In addition to restaurant-quality rice, your new Aroma® Professional™ Rice Cooker is ideal for cooking complete, healthy meals. a knockout post

    ReplyDelete
  2. Pretty good post. I just stumbled upon your blog and wanted to say that I have really enjoyed reading your blog posts. Any way I'll be subscribing to your feed and I hope you post again soon. Big thanks for the useful info. OMC parts list

    ReplyDelete
  3. rice cooker and Electric Kettle works on same principle

    ReplyDelete
  4. I had change the magnetic temp switch but the rice still not fully cooked

    ReplyDelete
    Replies
    1. It could be that the switch has lost its magnetic strength or the distance between the switch contact has widen

      Delete
    2. I had mine with the same problem and opened only to find that the gap between the contacts has widen. I pushed it back and it works fine.

      Delete
  5. PC gear has ruled volumes taken care of by the gadgets reusing industry. The IDC think about announced that over 60% by weight of industry input volumes was "PC hardware" (counting PCs and screens). OMC parts

    ReplyDelete
  6. hello brother please i need help regarding my Black+decker rice cooker
    modle no RC1860 588-700w,
    its not working , i checked there is no thermal fuse on that,
    can u please help me

    ReplyDelete
  7. Hello brother,
    Please i need your help,
    I have a
    BLACK+DECKER RC1860 Type1 220-240v-50-60Hz 588-700W
    rice cooker only used for few times, but now not working,
    I checke for the thermal fuse all over the cables but didn't find,
    Can u please help me fix it,
    Thank u so much
    now wat can i do brother

    ReplyDelete
    Replies
    1. can you send pictures of it to my mail fatzak16 @ gmail.com, so i can help you fix it

      Delete
  8. That is really nice to hear. thank you for the update and good luck. appliance repair

    ReplyDelete
  9. Wow! Such an amazing and helpful post this is. I really really love it. It's so good and so awesome. I am just amazed. I hope that you continue to do your work like this in the future also Top Rated Ice Maker Repair in Riverside

    ReplyDelete
  10. If your looking for Online Illinois license plate sticker renewals then you have need to come to the right place.We offer the fastest Illinois license plate sticker renewals in the state. DRYER REPAIR AND SERVICE IN SANTA BARBARA, CA

    ReplyDelete
  11. I like your post. It is good to see you verbalize from the heart and clarity on this important subject can be easily observed... air fryer

    ReplyDelete
  12. With the right software, virtually any message can be created and displayed. best walkie talkie

    ReplyDelete
  13. Thank you for helping people get the information they need. Great stuff as usual. Keep up the great work!!! best keurig for home

    ReplyDelete
  14. Thank you so much for the useful information.
    My rice cooker's thermo fuse was burnt and upon replacing it with a new one it burnt again. It's a 165°C fuse. Any help on what is causing the fuse burning problem please

    ReplyDelete
  15. Thank you so much for the useful information.
    My rice cooker's thermal fuse was burnt and upon replacing it with a new one it burnt again. Any help on what is causing the fuse burning problem please

    ReplyDelete
    Replies
    1. its probably because your rice cooker switch cant turn the cooker off when it reach the point to switch it off or maybe your cooker heater is drawing more current than what the fuse can handle

      Delete
    2. Thank you. Now I have another Rice cooker problem, it cooks but fail to switch to "Keep/warm". Any help please.

      Delete
  16. Very good topic, similar texts are I do not know if they are as good as your work out. SubZero, Viking, Scotsman Ice Maker Repair in SANTA MONICA

    ReplyDelete
  17. The cost of the services offered by the person involved should be economical. Expert Sub Zero Refrigerator Repair Service

    ReplyDelete
  18. Wow, cool post. I'd like to write like this too - taking time and real hard work to make a great article... but I put things off too much and never seem to get started. Thanks though. air fryers

    ReplyDelete
  19. I wanted to thank you for this excellent read!! I definitely loved every little bit of it. I have you bookmarked your site to check out the new stuff you post. Best Egg Poacher

    ReplyDelete
  20. This is such a great resource that you are providing and you give it away for free. I love seeing blog that understand the value of providing a quality resource for free. TV BF Deals

    ReplyDelete

Powered by Blogger.