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It will not heat or defrost. It is somewhat noisy.

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

Microwave Oven Basic Troubleshooting Tips

heatman101.

Posted on Oct 14, 2010

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6ya6ya
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Posted on Jan 02, 2017

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2 slices of bread wrapped in paper towel microwave set on defrost set 35 seconds caught fire


Microwaves work by friction. They blast water molecules in the food so they move fast, just like rubbing your hands together makes them hot. Some types of microwave in defrost mode actually apply FULL POWER for a short period of time so to make the product warm to the touch. This heat then penetrates down to the core of the food, ensuring full defrost. In your case the heat was sufficient enough to heat the dry paper towel to set it on fire.
Bread is better defrosted on the low power setting as sliced bread is very thin. Items should only be defrosted on the defrost setting that are thick and need to be completely defrosted on the inside. Remember microwaves only penetrate the surface of food, making that hot. Thermal conduction does the rest.
You should never use paper towels in a microwave unless the instructions for doing the food say so. You wouldn't put a paper towel in a gas or electric oven, so don't put them in a microwave.

Feb 18, 2016 | In Microwave Ovens

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How do you defrost on the microwave


What is need to set the program, select defrost function then select the weight of the food to be defrosted and push the value of the weight. Now select the heat value and press start as the processor will then decide the time to defrost.
This is a simple program setting or else you can choose a preset heating defroster program.

Aug 19, 2011 | Microwave Ovens

1 Answer

FRIDGE button is set on 3, red light flashes, air system works but it is not cool for at least 1 hour, Freezer set on 4 S and works.


Start out with the easy stuff first...make sure the lights go out when you close the door(s), make sure the doors are closing properly and the gaskets are closing fully and not torn. Check to make sure the evaporator fan in the freezer is working, this fan blows the cold air around. If the fan is not working, possible bad fan motor - check for power to the fan motor and also check the fan switches around the door openings, ( if your fridge has these switches, not all do ). A common problem cropping up in the last several years has been the air damper not opening up and allowing the cold air from the freezer to be blown into the fresh food section ( mostly on SxS refrigerators ). For many years the air damper was manually operated and now we have motorized controlled or temperature controlled or thermistor and electronic boards controlling air dampers, and if this device sticks closed the FF section will normally warm up. An example picture of "one" style and an air damper ( called a diffuser by Whirlpool ). Next would be to check the condenser tubing, a good place to start is to make sure the condenser coils are not built up with dust!! Make sure the condenser fan motor is also working properly. Check for any "clicking on and off" noises from the compressor, is the compressor running.
The most common fridge "not cooling" problem is a frost free failure. Remove the access panel in the freezer section to expose the evaporator coils. If the coils in the freezer section get plugged up with frost, this frost will block the evaporator fan motor from blowing the cold air around. The fan blade can also hit this frost and either become noisy or stop altogether. Locating the defrost timer can be tricky....they are often hidden behind the back bottom corners of the fridge at the bottom, in the last few years the timers have been located in the ceiling of the fresh food section, and some behind the cold control cover. Once you locate the defrost timer, slowly turn the screw like wheel in the middle of the defrost timer with a straight screwdriver until the fridge shuts off. You are now in defrost. If the defrost heater(s) comes on now, replace the defrost timer and defrost thermostat. If the heater(s) does not come on, you can ohm test the defrost heater for continuity or volt test for 120 volts to the heater(s). If you have no power to the defrost heater(s) you can also bypass the defrost thermostat to see if the defrost heater will come on, join the 2 wires together to bypass the defrost thermostat. If the heater now comes on, replace the defrost timer and defrost thermostat. If the heater itself is bad, defrost the fridge with a hair dryer, replace the defrost heater* and defrost thermostat. If the defrost timer seems "hot" to the touch or is noisy ( like a ticking or screeching noise )...replace it. Then make sure all the vents are clear and not being blocked by food cartons. One new safety device added to refrigerators in the last few years has been a in-line fuse added to both sides of the defrost heater. If one of these fuses let's go, you must replace the whole defrost heater, as it comes as an assembly. If the defrost heater does not work, you should check for one of these fuses being open. Check it with a volt meter or ohm meter.
New link from Appliance Repair Aid on how the wiring circuit works for a frost free fridge, the link is here.
On a frost free refrigerator, the cooling coils should be in the freezer section. On a SxS style refrigerator the coils will be behind a cover on the back wall. On a freezer on top style the coils could be behind the back wall or under the freezer floor. Removing the cover and exposing the evaporator coils could be a valuable tool. Seeing what the cooling coils looks like may help split your not cooling problem. Totally covered coils with white snow is a frost free problem. and the rest are bare is an indication of a system problem
If you find this helpful, a vote with the thumbs up would be appreciated for the free advice

Jul 13, 2011 | Microwave Ovens

1 Answer

When you press start the microwave starts with a low hum and sounds like a bearing or fan is vibrating, micrwave still heats up and works just runs rough. Bruce


Ther is a loose peace of metal in the magnetron, it is not a big worry, it's just noisy, i have a noisy microwave and it is working fine for 10 years now, if you use the defrosting mode you should hear the noise (on and off) because in the defrost mode the magnetron energises on and off, it could be the cabinet vibrating as well look for loose peaces of metal

Good luck!

Jan 04, 2011 | GE JVM1850 1000 Watts Microwave Oven

1 Answer

It runs but does not heat. last nite used the speed defrost now it won't heat for anything made a noise while on speed defrost


sounds like the magnetron may be gone on it. this creates the heat. if the unit is older, it's not worth repairing, but if newer, check you manual for the warranty. some mags have 3-5 years warranty.

Nov 13, 2009 | Emerson MW8102SS 1100 Watts Microwave Oven

1 Answer

My refrigerator stopped working and will not come back on. It is a Jenn-Air Side by side purchased 4 years ago.


you might have a defrost problem. Frost free models have a heating element that is controlled by a timer to automatically defrost ice, defrost timer turns on defrost heating element every 12 hours to melt ice in freezer and allow good air flow.
You can test defrost element with an ohm meter(located inside freezer coils-will have two wires going to a plug connection), if OK replace defrost timer (located in various places depending on make and model

Aug 24, 2009 | Microwave Ovens

1 Answer

Kenmore 62622 microwave


A component of the high voltage section has shorted, possibly the diode. If it was the capacitor, it would normally blow th fuse.
If it is the high voltage transformer and you continue running it,
it should devolpe smoke in about one minute. Either way, a part
will have to be replaced to correct the situation.

Mar 07, 2008 | Kenmore 62622 Microwave Oven

1 Answer

Vibrating noise when cooking


In order to try to set your mind at ease I will have to explain the Basics on how a Microwave Oven Functions.
When a Microwave Oven is set to COOK ...START. It cooks at 100%. There is no lowering of the heat as with a Range ( Cook Top) Control. So in order to do the other things such as DEFROST, WARM, or anything other than 100% COOK. A COOK ON- COOK OFF system was utilized. To DEFROST, the Microve COOKS at 100% for 30% of the TIME, then IDLES for 70% of the TIME. COOK ON 30% of the TIME, COOK OFF 70% of the TIME = DEFROST This is why you can hear the CYCLE. More power is required during the ON CYCLE, thus the lower vibration. The Vibration occurs when the High Voltage Transformer is turned ON ( COOK ON).
The VIBRATION seems to have got louder with age. This is somewhat normal as there is a vibration from the High Voltage Transformer present every time the Microwave is used. screws and other metal parts seem to get loose with this vibration. There is no solution, unless you can tighten EVERY screw, nut, and bolt in the unit.
Sorry!

Dec 07, 2007 | Kenmore 62642 / 62644 / 62649 Microwave...

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