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E-21 error on a Frigidair microwave oven - Microwave Ovens

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Replace thermal sensor and fix it. God bless you

see the photo attached.
E-21 error on a Frigidair microwave oven - 1511300c-8352-414e-9760-ccf9cb5357f4.gif

Posted on Nov 23, 2013

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Posted on Jan 02, 2017

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1 Answer

What is error 21 in micro waves


In case you are using a Samsung Microwave, Error 21 or E21 is Thermistor Short error. It is caused when the thermistor sensor, which senses the temperature of the cavity inside does not work properly.

To correct this, unplug the power cord and wait for more than 10 seconds. Plug the power cord
again. If the symptom persists, contact the nearest service centre

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I shorted out the counter lights on my frigidair microwave. The microwave works but not the lights. I've replaced the bulbs. What next?


The metal base may have fused together from electrical arcing when the old bulb was removed. The entire bulb receptacle (socket) will have to replaced. If you cannot do that yourself, the cost would be excessive. Just live without the light as long as the microwave gets the job done.

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Aeg glass induction hob error code ER 21


reset the microwave. Disconnect the power cord, by 1minutes, and try again,the microcontroller is confuse.
If the problem persist you can be problem with the main controller board, repllace, but read your owner manual section troubleshooting for identi the error. download from www.retrevo.com
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Oct 27, 2013 | Microwave Ovens

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WE NEED THE CONTROL BOARD OF OUR FRIGIDAIR KITCHEN (CONTROL OF OVEN) SF5311-S8201-AA REVH ....PLEASE TELL US HOW WE CAN GET THIS PART .THANKS


SF5311-S8201-AA is not a valid Frigidaire part number.

You can find handy exploded views and order parts by entering the full model number from the tag on your oven
here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

May 25, 2011 | Microwave Ovens

1 Answer

GE microwave JEB1860 runs like normal but no heating. 21 months old. What is causing the no heating.


Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101 gfsghhgs

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Microwave is 21 years old. It is above the range


Um, no. You can get a new microwave that is much, much more efficient for a fraction of the repair cost.

Nov 09, 2009 | Whirlpool MH7135XE Microwave Oven

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Error code E-21 Jenn Air convection microwave


That code says to first check your oven temp. sensor probe connection and ohm it out with an ohm meter, it should read about 1100 ohms at room temp.

If thats ok, then it says the problem is your relay board.


If you need more repair advice help on your appliance, click
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Jul 07, 2009 | Jenn-Air JMV8208A Microwave Oven

1 Answer

Works for approx 30 secs then it cuts off with a error Code F7 message.


Assuming yours is a model KHMS2050SSS0, here is what the technical sheet says about the F7 error code:

1. Unplug microwave oven or disconnect power.
2. After 40 seconds, check to see whether this solves the problem.
3. Unplug microwave oven or disconnect power.
4. Check cooling fan operation
5. Check the magnetron.
6. Check P65 connection on the relay control board.
7. Check the P56/P66 connection between relay board and relay control board.
8. Check wiring to the 1200W inverter and control system. See “Checking Inverters.”
9. Check operation of all interlock switches.
10. Replace all parts and panels before operating.
11. Plug in microwave oven or reconnect power.
12. Check voltage at 4903-1 on relay board. If it is 120, unplug microwave oven or disconnect power.
13. Replace inverter.
14. Replace all parts and panels before operating.
15. Plug in microwave oven or reconnect power.
16. If problem persists, unplug microwave oven or disconnect power.
17. Replace relay control board.
18. Replace all parts and panels before operating.
19. Plug in microwave oven or reconnect power.
20. If problem persists, unplug microwave oven or disconnect power.
21. Check for reversed plug connection on controls or loose wiring.
22. Replace all parts and panels before operating.
23. Plug in microwave oven or reconnect power.

(This troubleshooting guide presumes one does not know how to test electronic components. That's why they say to replace and part and check it again.)

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

If yours is a different model number, please reply back.

May 26, 2009 | KitchenAid KHMS2050SSS Microwave Oven

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