TROUBLESHOOTING

TROUBLESHOOTING

BEFORE CALLING FOR SERVICE

Check the following list to be sure a service call is necessary. Reviewing additional information on items to check may prevent an unneeded service call.

PROBLEM

POSSIBLE CAUSES

 

 

If nothing on the oven operates

• check for a blown circuit fuse or a tripped main circuit breaker.

 

• check if oven is properly connected to the electric circuit in house.

 

• check that controls are set properly.

 

 

If the oven interior light does not work

• the light bulb is loose or defective.

 

 

If oven will not cook

• check that control panel was programmed correctly.

 

• check that door is firmly closed.

 

• check that Start/Enter Pad was touched.

 

• check that timer wasn’t started instead of a cook function.

 

 

If oven takes longer than normal to cook

• be sure the Power Level is programmed properly.

or cooks too rapidly

 

 

 

If the time of day clock does not always

• check that the power cord is fully inserted into the outlet receptacle.

keep correct time

• be sure the oven is the only appliance on the electrical circuit.

 

 

If food cooks unevenly

• be sure food is evenly shaped.

 

• be sure food is completely defrosted before cooking.

 

• check placement of aluminum foil strips used to prevent overcooking.

 

 

If food is undercooked

• check recipe to be sure all directions (amount, time, and power levels)

 

were correctly followed.

 

• be sure microwave oven is on a separate circuit.

 

• be sure food is completely defrosted before cooking.

 

 

If food is overcooked

• check recipe to be sure all directions (amount, power level, time, size of

 

dish) were followed.

 

 

If arcing (sparks) occur

• be sure microwavable dishes were used.

 

• be sure wire twist ties were not used.

 

• be sure oven was not operated when empty.

 

• make sure metal rack (if used) is properly installed on 4 supports.

 

 

If the display shows a time counting

• check that door is firmly closed.

down but the oven is not cooking

• check that timer was not started instead of a cooking function.

 

 

Vent fan starts automatically

• If the temperature gets too hot around the microwave oven, the fan in the

 

vent hood will automatically turn on at the LEVEL 4 setting to cool the

 

oven. It may stay on up to an hour to cool the oven.

 

 

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LG Electronics LMHM2017SB, LMHM2017W, LSMH207ST, LMHM2017ST manual Troubleshooting, Before Calling For Service