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HomeRepair HelpLG Oven RepairLG Electric stove burner temperature is erratic Repair
LG Electric stove burner temperature is erratic
An LG electric stove burner with erratic temperature, burner cycling, or a temperature that keeps jumping may have a failing surface element switch. The switch controls voltage to the surface element coil, and a defective switch can cause intermittent heating. If your LG electric stove has another burner the same size, swap the elements to help determine whether the switch is at fault. If two or more burners are changing temperature unpredictably, the surface element board is more likely defective because its relays regulate power to the burners. A faulty LG range control board or oven control board can also send intermittent voltage to a heating element. If only one burner is affected, test the element for continuity. If you have a coil burner, inspect the element receptacle and wire kit for burned contacts or damaged prongs. Replace both parts if the connection has overheated. Finally, inspect the wiring near the element for loose or burnt wire connections. Disconnect power before testing or repairing your LG electric stove, and use the wiring diagram when checking voltage with a multimeter. Enter your model number to find the exact replacement surface element switch, board, receptacle, or wire kit for your LG range.
01 - LG Range/Stove/Oven Surface Element Switch
The surface element switch sends voltage to the surface element coil. If the switch is defective, the surface element may only receive intermittent voltage resulting in erratic temperature changes. If there is another element of the same size on the stove, try switching the elements. If the surface element still only works intermittently, the surface element switch is likely defective. The surface element switch cannot be tested or repaired—if you suspect the switch is defective, replace it.
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02 - LG Range/Stove/Oven Surface Element Board
The surface element board has relays that regulate the power supply to the burners. If one or more of the relays fails, the surface element may only work intermittently, resulting in erratic temperature changes. If two or more burners have erratic performance at the same time, this indicates that the surface element board is likely at fault. If only one surface element is erratic, use a multimeter to test the element for electrical continuity. If the surface element has continuity at all times, the surface element board might be defective.
Top Solution
03 - LG Range/Stove/Oven Control Board
A range or cooktop's control board will send voltage to a stovetop heating element when the element's control knob or touchpad button is set to the “on” position. If the control board is defective, the voltage may not be sent to the heating element or only sent intermittently resulting in erratic operation. You can inspect the board for signs of damage or a shorted component. You can also use a multimeter to test for voltage reaching the heating element or elements after reviewing the appliance's wiring diagram.
Highly Likely
04 - LG Range/Stove/Oven Oven Control Board
A range or cooktop's control board will send voltage to a stovetop heating element when the element's control knob or touchpad button is set to the “on” position. If the control board is defective, the voltage may not be sent to the heating element or only sent intermittently resulting in erratic operation. You can inspect the board for signs of damage or a shorted component. You can also use a multimeter to test for voltage reaching the heating element or elements after reviewing the appliance's wiring diagram.
Highly Likely
05 - LG Range/Stove/Oven Element Receptacle and Wire Kit
The surface element plugs onto a receptacle. Over time, the contacts in the receptacle can burn out. If the receptacle contacts burn out, the surface element may only receive power intermittently or not at all. To determine if the element receptacle has failed, inspect the receptacle contacts. If the contacts are visibly burnt or damaged, replace the element receptacle. In addition, examine the element prongs for signs of burning. If the prongs are burnt, replace both the element and element receptacle.
Common
06 - Loose or Burnt Wire Connection
These wires commonly burn out near the heating element. To determine if a wire has burned out, inspect the wires leading to the element. If a wire is burned out, it will often be visibly burnt.
Less Common
Frequently Asked Questions
Why is my LG electric stove burner temperature erratic?
How do I test an LG electric stove burner that is not heating consistently?
Can a surface element switch cause an electric stove burner to heat erratically?
Why are multiple LG electric stove burners changing temperature on their own?
How do I find the correct LG electric stove burner part?
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