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Microwave heated food an hour ago but has stopped heating it now. Sensor cooking ceases and displays "F3H". Fan has stopped working also.

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  • Anonymous Mar 16, 2014

    display and fan work but won't heat food

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  • 518 Answers

A make and model would have been nice, but try unplugging it from the wall outlet for 15 minutes.

Hope that helps...

Geno

Posted on Mar 26, 2008

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1 Answer

Exterior of oven , top and both sides gets very hot to touch, when cooking +- 10 minutes or more the last couple of days; no Error ( E41/42/45 or 47 are being displayed. Fan is normal, functions: OK


There could be food or oil buildup around the door frame which will absorb some of the radiant and microwave energy whilst cooking. Give it all a good clean and see if that helps. If everything else is working properly, it may be a problem with the cooling fan. Microwave ovens have a "stirrer fan" inside the roof or rear of the cooking area to disperse the microwaves and some convection / microwave ovens also have a cooling fan which assists in dissipating heat within the cabinet.

Jan 04, 2016 | Microwave Ovens

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Problem with KHMS1850S Stainless Steel 1000 Watts Microwave Oven


Possible that the Magnetron is powered off or is defective. You can check the main capacitor to the HT, check the leads, check the main board.
Also check the sensor which is mounted on the top or side of the cabin which is protector for overheat and can cut the voltage for safety.
If so also check the wave guides
Click on: Waveguides

Jan 30, 2013 | Microwave Ovens

1 Answer

Not heating


Hello


Power Supply

Check whether there is a proper power supply. Look to see whether the cord is connected to a grounded 3-prong outlet and the cord is fully plugged in. If the electrical system is built-in and no power cord is visible, replace or reset the household fuse or circuit breaker.

Microwave Functions

Some basic microwave operational steps may affect whether the microwave is heating. Open and close the microwave door, as the unit will not function with the door open, and push "Stop/Clear" to cancel any previous settings, such as the timer, which do not heat the microwave oven.

Setting the Microwave

Once the power to the microwave has been reset, or verified as working, and the microwave is ready to run, select a new cook cycle and press "Start" to see if the microwave begins to run and cook food as expected. Allow the food to cook for the alloted time and then open the microwave door and check to see if the food has cooked or heated. Choose a longer cooking time and restart the microwave if food is heating but is cooking slowly.

Repair

If all efforts to troubleshoot the function and power to the microwave still do not get the appliance heating food as expected, there may be a repair issue that needs to be addressed. Contact professional technician for advice.

Oct 05, 2011 | Sanyo Microwave Ovens

1 Answer

SHARP R 88BKM no microwave


David
This is a sure sign that the MAGNATRON unit has went out on your oven and will need replaced! (This is what cooks the food!)
Please take a second and rate my response!
Thank You!

Jan 15, 2009 | Sharp R-1481B Microwave Oven

1 Answer

No heat


heating element stopped working
easiest thing is to get a new microwave

Dec 22, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Ge profile microwave doesn't seem to be heating food real hot. during the last bag of popcorn we tried to pop it never even started popping it, and the microwave stopped and said on the screen...


On GE models, "SENSOR ERROR" appears on the display when:
  • Using the sensor feature, the door was opened before steam could be detected. Do not open the door until stream is sensed and time is shown counting down on the display.
  • Steam was not detected in the maximum amount of time. Use Time Cook to heat for more time.
The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for maybe an hour. Then let us know if the hard reset does not fix it.

Otherwise, your sensor may have failed.

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

Nov 22, 2008 | Microwave Ovens

2 Answers

Microwave troubleshooting


I found the fix to the F3H error on another site. Just turn the power to the microwave off for ~2 minutes at the circuit breaker, and then turn it back on. Microwave will start working again then.

Feb 23, 2008 | Whirlpool GH5184XPQ Microwave Oven

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