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1.8 cu.ft. Over-the-Range Microwave Oven

  • LMV1831SW

  • Smooth White

Key Features

  • 1.8 cu.ft. Oven Capacity
  • 1000 Watts
  • Sensor Cooking
  • EasyClean®


With the new EasyClean® interior, you can have quick and high performance cleaning inside and out without using chemicals.

Senses Optimal Temperature for Fast Results

Senses Optimal Temperature for Fast Results

Sensor Cooking technology senses humidity levels within the oven and automatically adjusts cooking time and performance to help provide optimal heating performance.

Touchpad and Display Features

Touchpad and Display Features

Core Features

Core Features

Oven Capacity 1.8 cu. ft.
Output (Watts) Microwave 1000W
Exterior Design WideView™ Traditional
Control Type Digital
Display Green, 4 Digit LED
Sensor Cook Options 7
Power Levels 10
Defrost Auto, Time and Rapid Defrost
Reheat Sensor Reheat
Popcorn Key Yes
EZ-On Yes
More/Less Yes
Melt/Soften Yes
EasyClean® Yes
Energy Savings Key Yes
Bi-Level Cooking Rack Yes
Turntable Type DDS
Turntable Diameter 12.6"
Turntable On/Off Yes
Clock Yes
Kitchen Timer Yes
Completion Beeper Yes
Lighting Incandescent (2), On/Off
Child Lock Yes
Filtration Charcoal Filter
Vent Grill Type Hidden
Vent Air Flow (CFM) 300
Power Levels 3 (Turbo/Hi/Low)
Available Colors Smooth White (SW), Smooth Black (SB), Stainless Steel (ST)
Interior Color Gray
Interior (WxHxD) 21 9/16" x 8 7/8" x 14 1/8"
Exterior (WxHxD) 29 15/16" x 16 7/16" x 15 3/8"
Shipping Qty. 330 sets / 40ft.
Net Weight (lbs) 48.5 lbs
Shipping Weight (lbs) 55.1 lbs
Limited Warranty 1 Year Parts and Labor (In Home Service) 10 Years Limited on Magnetron (In Home Service)
UPC 048231 318686

What People Are Saying

Rated 5 out of 5 by from Nice Micro At first was overwhelmed with the options already set up in the program for this micro, but after just a couple of weeks it is easy to use. The style is so nice and is the final piece to my complete LG kitchen.
Date published: 2015-08-31
Rated 5 out of 5 by from my wife loves this microwave I am very happy that I purchased this particular microwave. It looks great, has all the features I was looking for and my wife is happy with this model. She says she really likes the one touch reheat preset function. For example, when she reheats pancakes she says they are not soggy or hard. I found my microwave at best buy for a great price.
Date published: 2015-08-28
Rated 5 out of 5 by from Great microwave Nice looking, good quality, works great! meets my needs
Date published: 2015-08-28
Rated 5 out of 5 by from Quick cooking! Love this microwave. Love how quickly food cooks, the power save button, and all of the features. Downside no express cook button, but you don't have to press time start then numbers then start. Just punch in the numbers and press start. Easy to use and clean!
Date published: 2015-08-18
Rated 5 out of 5 by from Love my microwave I purchased this lg to replace a 15 year old sharp over the range. This microwave is quiet, the stainless steel blends well with my black top range. The smart buttons are very handy and takes the guess work out of tasks, like softening butter as opposed to melting butter.
Date published: 2015-07-11
Rated 1 out of 5 by from Not at all worth the money The door has a tin sound when opening and closing. There is a static crackling sound when you press the "start" key. The same noise is heard when you hear the stop beep. Sounds like an electricity problem.
Date published: 2015-07-06
Rated 5 out of 5 by from Easy and reliable to use Bought this at Best Buy on a promotional deal, price and size was good for your kitchen. The installation was pretty straightforward, but definitely needs two person to lift into place. The hardware and the supporting diagrams were helpful. We have been using every day about 5 months and has been working great! Only thing we had to change was the light bulb, the recommended 30w not available in store.
Date published: 2015-07-03
Rated 1 out of 5 by from Cleaning problem LG Microwave door has a screen that blocks the cleaning of the inside of glass. When door is closed it has streaks and stains are visible.
Date published: 2015-06-06
  • 2015-10-08T09:04CST
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We're here to support you with our product.

Contact us for any purchasing inquiries.

Product Support


Ask your questions. Share your answers.

Can this microwave be placed into a cupboard?

I am remodeling my kitchen. I want to move the microwave either into a wall above a double wall oven (see pic), or into a center island (see second pic). Are either possible? I obviously wouldn't be using the fan option any longer, but is there any danger with installing them in these two locations without venting?
Asked by: tdtchr
We appreciate your interest in this microwave oven. This model is designed specifically for an Over-the-Range installation. Using the installation options mentioned will negatively affect the operations of this microwave oven, and is not recommended.
Answered by: NeilE
Date published: 2015-09-09

What is the # for the charcoal filter for microwave oven LMV1831. I can not find it any where. Thank you Christine Thompson

Asked by: Chrys
Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at The part number for the Charcoal Filter is 5230W1A011B.
Answered by: NeilE
Date published: 2015-04-21

Simpliest way to heat a cup of coffee?

Installed our new LMV1683 a couple days ago and are having trouble following instructions on how to use it for the simple things like heating a cup of coffee. Either I am getting old and can't follow directions or your owner's manual is hard to follow. Most of the things I will never use but to quickly heat a cup of coffee is something I will use a number of times each day. HELP! Thank you. TomE
Asked by: TomEnglish
The simplest method for reheating liquids would likely be the TEA category for the SENSOR REHEAT function. It is recommended to place the cup in the microwave, then press the REHEAT button, then the #6, and then the START/ENTER button. Stir the liquid when the unit beeps and displays END. This information can be found on page 15 of your owner’s manual.
Answered by: NeilE
Date published: 2015-03-24

Does the LG microwave have a fuse?

If it does, where is it located. Ours made a noise and quit. LRM2060ST is our model number.
Asked by: Nane
I apologize, but no; there are no fuses on this microwave oven that allow for the home repair of the unit. To make service arrangements, you may either contact our Customer Interactive Center at 800-243-0000, or you can check our Repair Provider Lookup on our website, at
Answered by: NeilE
Date published: 2015-02-26

what size bolts are needed to mount the top of microwave model number lmv1831st

Asked by: thomasih
According to the installation guide, this microwave oven should be supplied with two 1/4" x 3” bolts for securing the unit to the upper cabinet.
Answered by: NeilE
Date published: 2015-02-20

The bottom of our cabinet is 30 and 3/4 inches from cooktop. Will this microwave install safely?

Asked by: BIGSEES
This is a question for your kitchen installer. The typical cabinets are set at around 18 inches above the counter, so your microwave should also be about this height above the stove top.
Answered by: Nick9066
Date published: 2015-08-28

Can the micro LMV1831ST be vented to the ouside?

Asked by: bobbyj
Yes and its very efficient
Answered by: Nick9066
Date published: 2015-08-11

what is the mfg part number for turnable tray support?

Asked by: Stanislaw
Accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders, is 800-824-9491. You can also use their website, at The part number for the Turntable Shaft is 4370W1A006F. The part number for the Turntable Ring Assembly is 5889W2A012H.
Answered by: NeilE
Date published: 2014-11-25
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