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24

TROUBLESHOOTING

Before Calling for Service

Problem

Oven does not start

Arcing or Sparking

Incorrect time of day

Unevenly Cooked Foods

Overcooked Foods

Undercooked Foods

Improper Defrosting

You can often correct operating problems yourself. If your microwave oven fails to work properly, locate the 
operating problem in the list below and try the solutions listed for each problem.
If the microwave oven still does not work properly, contact the nearest LG Authorized Service Center. 
LG Authorized Service Centers are fully equipped to handle your service requirements.

• Is the power cord plugged in?
• Is the door closed?
• Is the cooking time set?

• Are you using approved cookware?
• Is the oven empty?

• Have you tried to reset the time of day?

• Are you using approved cookware?
• Is the glass turntable in the oven?
• Did you turn or stir the food while it was cooking?
• Were the foods completely defrosted?
• Was the time/cooking power level correct?

• Was the time/cooking power level correct?

• Are you using approved cookware?
• Were the foods completely defrosted?
• Was the time/cooking power level correct?
• Are the ventilation ports clear?

• Are you using approved cookware?
• Was the time/cooking power level correct?
• Did you turn or stir the food during the defrosting cycle?

WARNING: 

This equipment generates and uses ISM frequency
energy and if not installed and used properly, that is in
strict accordance with the manufacturer’s instructions,
may cause interference to radio and television
reception. It has been type tested and found to
comply with limits for ISM Equipment pursuant to part
18 of FCC Rules, which are designed to provide
reasonable protection against such interference in a
residential installation.
However, there is no guarantee that interference will
not occur in a particular installation. If this equipment
does cause interference to radio or television
reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the
following:

• Reorient the receiving antenna of the radio or

television.

• Relocate the microwave oven with respect to the

receiver.

• Move the microwave oven away from the receiver.
• Plug the microwave oven into a different outlet so

that the microwave oven and the receiver are on
different branch circuits.

The manufacturer is not responsible for any radio or
TV interference caused by unauthorized
modification 
to this microwave oven. It is the
responsibility of the user to correct such interference.

FEDERAL COMMUNICATIONS COMMISSION

RADIO FREQUENCY INTERFERENCE STATEMENT

Possible Causes

Summary of Contents for LMA840W

Page 1: ...website http us lgservice com LMA840W ...

Page 2: ...efrost Guide Auto Defrost Chart HEATING REHEATING GUIDE 20 FRESH VEGETABLE GUIDE 21 TROUBLESHOOTING 22 24 Questions and Answers 22 23 Before Calling for Service 24 WARRANTY Inside back cover 11 11 11 12 12 12 13 14 15 15 16 Auto Touch Chart 17 19 Please record the model number and serial number of this unit for future reference We also suggest you record the details of your contact with LG LG Elec...

Page 3: ...lt in a risk of electric shock Consult a qualified electrician if the grounding instructions are not completely understood or if doubt exists as to whether the appliance is properly grounded and either 1 If it is necessary to use an extension cord use only a 3 wire extension cord that has a 3 blade grounding plug and a 3 slot recepta cle that will accept the plug on the appliance The marked rating...

Page 4: ...operate this appliance if it has a damaged cord or plug if it is not working properly or if it has been damaged or dropped 9 This appliance should be serviced only by qualified service personnel Contact the nearest authorized service facility for examination repair or adjustment 10 Do not cover or block any openings on the appliance 11 Do not store this appliance outdoors Do not use this product n...

Page 5: ...rrow necks 4 After heating allow the container to stand in the microwave oven for a short time before removing the container 5 Use extreme care when inserting a spoon or other utensil into the container 18 Avoid heating small necked containers such as syrup bottles 19 Avoid using corrosive and vapors such as sulfide and chloride 20 Liquids heated in certain shaped containers especially cylindrical...

Page 6: ...n on a flat surface such as a kitchen countertop or a specially designed microwave oven cart at least 100cm 39 4 inches from floor Do not place oven above a gas range Free air flow around the oven is important Allow at least 4 inches of space at the top sides and back of the oven for proper ventilation NOTES Never place the turntable in the oven upside down D Do not block the air vents All air ven...

Page 7: ...Owner s Manual and Cooking Guide 1 each Glass Turntable 1 each Rotating Ring 1 each NOTE This microwave oven is designed for household use only It is not recommended for commercial use Oven Front Plate Window Door Screen Door Seal Display Window Control Panel Safety Door Lock System Turntable Rotating Ring ...

Page 8: ... DEFROST Touch this pad to defrost foods quickly 5 NUMBER PADS Touch number pads to enter cook time power level quantities or weights 6 TIME Touch this pad to set a cook time 7 POWER Touch this pad to set a cook power 8 STOP CLEAR It used to stop oven and clear all entries except time day 9 Ez ON You can extend cooking time in multiples of 30 seconds by repeatedly touching this pad during cooking ...

Page 9: ...h as roasts and whole poultry should be turned so that the top and bottom cook evenly Also turn over chicken pieces and chops ARRANGEMENT Do not stack food Arrange in a single layer in the dish for more even cooking Because dense foods cook more slowly place thicker portions of meat poultry fish and vegetables toward the outside of the dish TESTING FOR DONENESS Foods cook quickly in a microwave ov...

Page 10: ... in a paper bag that is not microwave approved Overcooking may result in smoke and fire Do not repop unpopped kernels Do not reuse popcorn bags Listen while corn pops Stop oven when popping slows to 2 3 seconds between pops Do not leave microwave unattended while popping corn Follow directions on bag NOTE Before cleaning the oven unplug the power cord If this is impossible open the oven door to pr...

Page 11: ...power level 80 p 80 shows in the display 6 Touch START When cooking is complete two short and one long tone sound and the word end shows in the display window Then the oven shuts itself off NOTE If you do not select the power level the oven will operate at power HIGH To set HI POWER cooking skip steps 4 5 above For Two or Three Stage cooking repeat above step 2 through 5 before touching the START ...

Page 12: ...ldren Once the CHILD LOCK is set no cooking can take place TIMER You can use the Timer of your oven for purposes other than food cooking To set the child lock To cancel the child lock Touch the number pad 0 Example To set the timer 3 minutes 1 Touch STOP CLEAR 2 Touch TIMER pad shows in the display 3 Touch 3 0 0 4 Touch START pad 2 Touch and hold 0 until appears in the display 1 Touch STOP CLEAR A...

Page 13: ...GE one Time 1 cup 240ml per cup two Times 2 cups Use mug or microwave safe cup Stir after reheating FRESH one Time 1 cup Prepare vegetable wash and cut into 1 2 inch pieces VEGETABLE two Times 2 cups Cover with plastic wrap and vent three Times 3 cups Most vegetables need 2 to 3 minutes four Times 4 cups standing time to finish cooking 1 2 cups Add 2 tablespoon water 3 4 cups Add 4 tablespoon wate...

Page 14: ...er Level Use Boil water Brown ground beef 10 100 Cook fresh fruits vegetables High Make candy Cook fish meat poultry Preheat browning dish 9 90 Heat precooked food Saute onions celery green pepper 8 80 All reheating Roast meat poultry 7 70 Cook mushrooms shellfish Cook foods which contain cheese eggs 6 60 Bake cakes muffins Prepare eggs Cook meat poultry 5 50 Cook custard Prepare rice soup 4 40 Me...

Page 15: ...d 2 1 2 shows in the display 4 Touch START pad Defrosting starts The display changes to defrost time count down The oven will beep during the DEFROST cycle At this time open the door and turn separate or rearrange the food Remove any portions that have thawed Return frozen portions to the oven and touch START to resume the defrost cycle The oven will not STOP during the BEEP unless the door is ope...

Page 16: ...bs PORK Hot dogs Spareribs Country style ribs Rolled roast Sausage VEAL Cutlets 1lb 1 2 inch thick POULTRY Whole under 4 lbs Cut up POULTRY two times Breasts boneless 0 1 6 0 lbs CORNISH HENS Whole TURKEY Breast under 6 lbs STEAKS Round steak Tenderloin steak STEAKS CHOPS three times CHOPS Lamb chops 1 inch thick Pork chops 1 2 inch thick 0 1 6 0 lbs FISH Fillets Steaks Whole SHELLFISH Crab meat L...

Page 17: ...r Turn over Cover warm areas with aluminum foil Turn over Cover warm areas with aluminum foil Same as above Turn over Finish defrosting breast side down Cover warm areas with aluminum foil Separate pieces and rearrange Turn over Cover warm areas with aluminum foil Turn over and arrange Turn over Cover warm areas with aluminum foil Same as above Same as above Turn over and rearrange Cover head and ...

Page 18: ...lamps 3 Prick the skin and brush lightly with vegetable oil unless the poultry is self basting 4 All poultry should be placed on a microwave roast ing rack or a microwave proof plate and placed on the turntable 5 Cook according to the instructions in the Poultry Cooking Chart below Turn over halfway through the cooking time Because of its shape poultry has a tendency to cook unevenly especially in...

Page 19: ...an be added to the fish if desired 5 Let stand as directed in the Cooking Chart before serving 6 After standing time check to see that the fish is thoroughly cooked The fish should be opaque and flake easily FRESH FISH COOKING CHART Fish Power Cooking Time Method Standing Per Pound Time Fish Fillets Whole Mackerel Cleaned and Prepared Whole Trout Cleaned and Prepared Salmon Steaks HIGH HIGH HIGH H...

Page 20: ...es 6 8 minutes 2 4 minutes 6 9 minutes 11 2 3 minutes 31 2 51 2 minutes 1 21 2 minutes 1 3 minutes 5 8 minutes 11 2 3 minutes 21 2 4 minutes 71 2 11 minutes 5 7 minutes 8 10 minutes 15 30 seconds 1 3 minutes 4 6 minutes 11 2 2 minutes Place sliced meat on microwavable plate Cover with plastic wrap and vent Note Gravy or sauce helps to keep meat juicy Place chicken pieces on microwavable plate Cove...

Page 21: ...in 11 2 qt covered casserole Stir halfway through cooking Add 1 4 cup water in 1 qt covered casserole Stir halfway through cooking Trim Add 1 4 cup water in 1 qt covered casserole Stir halfway through cooking Slice Add 1 2 cup water in 11 2 qt covered casserole Stir halfway through cooking Husk Add 2 tbsp water in 11 2 qt baking dish Cover Place mushrooms in 11 2 qt covered casserole Stir halfway ...

Page 22: ...ppliance it is possible to overcook food to the point that the food creates smoke and even possibly fire and damage to the inside of the oven It is always best to be near the oven while you are cooking The microcomputer controlling your oven may temporarily become scrambled and fail to function as programmed when you plug in for the first time or when power resumes after a power interruption Unplu...

Page 23: ...s being popped If corn fails to pop after the suggested time discontinue cooking Overcooking could result in an oven fire CAUTION Never use a brown paper bag for popping corn or attempt to pop leftover kernels Do not pop prepackaged commercial microwave popcorn directly on the glass turntable To avoid excessive heating of the glass turntable place the popcorn bag on a plate Listen while corn pops ...

Page 24: ...d you turn or stir the food during the defrosting cycle WARNING This equipment generates and uses ISM frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio and television reception It has been type tested and found to comply with limits for ISM Equipment pursuant to part 18 of FCC Rules which are de...

Page 25: ...ck up and or install the product instruct or replace house fuses or correct wiring or correction of unauthorized repairs and 2 Damages or operating problems that result from misuse abuse operation outside environmental specifications or contrary to the requirements or precautions in the Operating Guide accident vermin fire flood improper installation acts of God unauthorized modification or altera...

Page 26: ...P NO 3828W5A8172 Printed in China ...

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