Kenmore Microwave Oven model #401.80082700

The model number 721.80032 is a partial model number; it indicates the build series. I found the Kenmore microwave, 721.80032700. The final 3 digits indicate the panel color and similar details.

Assuming the microwave was installed properly, it should work as a hood fan. Press the touch pad with the fan icon (underneath it says Hi/Low/Off) to get the desired fan speed. The icon is on the lower left of the control panel; it's below the Cook Time button and to the left of the Light button.

The manual for the 721.80032700 is available here: https://www.searspartsdirect.com/partsdirect/user-manuals/72180032700-kenmore-parts-manual?manualIndex=0 . The direct link to the Owner's Manual is https://c.searspartsdirect.com/mmh/pd_download/lis_pdf/OWNM/L0710653.pdf . See pages 9 and 14 for using the exhaust fan.

I hope this helps.

Cindy Wells

Most over-the-range (OTR) microwave ovens have the exhaust fan funning at low speed when the microwave oven is working. This is to keep the magnetron and electronics cool. And it sucks air in from the bottom, so if you just place this microwave flat on the countertop, it won't be able to suck air in, and it could overheat if you use it for more than just a few minutes. But if you can put it on some boards or some sort of grill so air can get to the bottom, then you should be okay to use it as a counter-top model.

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

I would unplug the oven for 2 minutes to do a hard reset and try it again, just in cause there was a glitch.

Without knowing your full model number from the tag on the oven, I would wonder if it has a separate internal cooling fan from the hood vent exhaust fan. It could be an unrelated issue.

For more free DIY and other help & advice, feel free to contact me with your full model number and FCC ID number from the tag on your oven.

William E. Miller, AS-EET
[email protected]
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

see this causes and fix it .God bless you
Exhaust Fan Motor If the exhaust fan does not run the fan motor might be bad. Remove the fan motor from the microwave oven and see if the blades can be turned by hand. They should turn very freely, if they're stiff the fan motor will need to be replaced. The fan motor can also burn out. To test this use an Ohm meter. The motor should have continuity. If it does
Thermostat If the microwave exhaust fan is not working the thermostat might be defective. The thermostat senses the air temperature and turns on the fan as needed, if it's defective it won't turn on the fan. Watch our video on testing thermostats.

Main Control Board If the microwave exhaust fan is not working check the exhaust fan motor and wiring. If they are good the main control board might be defective.

It indicates a intermittent door switch, or faulty cooling fan.

From the factory manual here:

SPECIFICATIONS
Rated Power Consumption ..............1700W maximum (Microwave oven+Cook top lamps+Ventilation fan)
Microwave Output ...........1100W (IEC60705)
Frequency ....2,450 MHz ±50 MHz
Power Supply .................120 VAC, 60 Hz
Rated Current ................14.5 Amp. (Microwave oven+Cook top lamps+Ventilation fan)
Magnetron Cooling .........Forced Air Cooling
Rectification .Rectification Voltage Double Half-Wave
Door Sealing ..................Choke System
Safety Devices ...............Magnetron Thermostat: Open at 145 °C ±5 °C
Close at 60 °C ±5 °C .....................Oven Thermostat: Open at 110 °C ±5 °C
Close at 0 °C ±5 °C ......................Fuse(20A)
Magnetron ......................2M282J (Toshiba)
Cook top Lamp ...............130 V, 35 W (Halogen)
Cavity Lamp ...................130 V, 35 W (Halogen)
Timer ..............................Digital,up to 99 min.(in each cooking stage)
Tray ..............Tempered Safety Glass
Overall Dimensions ........2915/16"(W)x167/16"(H)x153/8"(D)
Oven Cavity Size ...........231/2"(W)x10"(H)x141/2"(D)
Effective Capacity of Oven Cavity ....2.0 Cu.ft.
Accessories ..Owner 's Manual &Cooking Guide, Installation Manual,
Exhaust Adapter, Exhaust Damper, Mounting Kit and Filter,
Rotating Ring Assembly, Glass Tray, Metal Rack, Guide Tray.

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

I would wonder if it's the internal cooling which comes on automatically whenever you microwave or the hood vent exhaust fan, which you can turn on and off manually.

It is vital that the cooling fan runs, or the turntable and stirrer won't work, and magnetron will soon be destroyed.

FixYa's Web site is currently not notifying us when replies to our Clarification Requests are posted, so please reply back directly with your full number from the tag on the unit so I can help you with free do-it-yourself tips or an estimate.

A full Sears/Kenmore model number has 3 digits, a dot, then 8 more digits, such as ###.########

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

William E. Miller
[email protected]
http://www.microwavedisplay.com

My husband took the unit off the wall looked down into the fan and found a dead mouse keeping the fan from spinning. We removed the dead mouse cleaned up the area. Turned on the oven. The fan worked perfectly. Then he rehung the microwave.
Thanks!

I HAVE KENMORE 665/61629 LIGHT STAYS ON. AND DO NOT COOKS. AND THE FAN DOES NOT WORK.

The problem is likely on the control panel, which we repair nationwide for $39.95 postpaid.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This often can affect the exhaust fan operation, too. The lights and fan can be inopoerable or stuck on.

If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and

disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk