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LG ranges

LG oven and range repair

On an LG electric range, F-9 has a hard number behind it: the oven could not climb past 150°F within 5 minutes of preheating. LG points to a shorted element or a faulty relay board.

Stainless freestanding gas range with five burners on top and the oven door below

Six LG oven codes and what LG ties them to

Most LG range codes start with F and a number. Why any oven runs cold or hot is covered on our oven pages. These are LG's own meanings, from its US code list and its help library.

F1, F2, F4, F5

Thermistor errors. F1 and F2 belong to the upper oven sensor, F4 and F5 to the lower oven.

F3 key short

A key reads as stuck pressed. LG notes the short may sit in the wire harness, not the key pad.

F6, F9, F19

Heating errors. F9 is an upper oven that is not heating properly, F19 an oven heating error.

F7 and F17

Convection fan faults. On LG's list F7 is the upper convection fan.

F10 and F20

Door locking system failures, F10 on the upper oven and F20 on the lower. Both follow the same reset steps.

HS, Sb, PF

Not faults. A cooktop above 150°F, Sabbath mode, or a break in power to the range.

LG range figures

30 to 60 s
gas igniter glow before the bake burner lights
25 s
to press START or a temperature change cancels
20 minutes
LG EasyClean cycle
12 hours
automatic safety shut-off

Sources: LG gas oven not heating guide; LG EasyClean guide; LG LREL6325 and LRGL5823 spec sheets

Gas and electric

LG ranges and where they differ

Three current LG ranges show how differently gas and electric models are built, and so where a fault tends to start.

ModelFuel and ovenTopPower needWhere we look first
LREL6325Electric, 6.3 cu. ft., True ConvectionRadiant, triple element at 3,000W, dual UltraHeat at 3,200W40 Amp minimum circuit, 14-50R or 10-50R receptacleBake and broil elements, relay board, F9
LSGL6337FGas slide-in, 6.3 cu. ft., ProBake Convection, Air Sous VideFive sealed burners, 22,000 BTU UltraHeat Plus on natural gasGas plus a 120V cordIgniter, convection fan, tilt-control knobs
LRGL5823Gas freestanding, 5.8 cu. ft., fan convection20,000 BTU UltraHeat burner120V 60Hz, 15 Amp minimum circuitHot surface igniter, gas valve, LP conversion
Recall history

Two CPSC recalls name LG ranges

In November 2012 LG recalled about 161,000 electric ranges, models LRE30451, LRE30453, LRE30755, LRE30757 and LRE30955ST, because burners could stay on after being switched off. LG had 80 reports and no fires. The fix was a free in-home repair. The 2025 knob recall is newer and bigger, covering slide-in and freestanding electric models such as the LSEL6337 and LDE4411. CPSC counted at least 86 reports of knobs turned on by accident. Its remedy is a warning label plus the Control Lock or Lock Out feature. Check the model label first, on the drawer or inside the oven door.

Related LG and oven pages

All LG appliance repairOven repair for every brandOven not heating causesGas oven that will not lightOven running hot or coldStove burner not workingLG dishwasher repairKitchenAid wall oven repair
01

Codes and heating

Press CLEAR/OFF and try the cooking function again. If the code returns, cut the range's breaker for 30 seconds and restore it. For F-9, LG's help library suggests leaving the range without power for 3 to 5 minutes, which drains leftover charge from the control board. A code that keeps coming back needs service.
The gas was probably shut off during the move, either at the house shut-off valve or at the pressure regulator on the range.
Watch the oven cavity right after you start Bake. LG's hot surface igniter glows red for about 30 to 60 seconds before the bake burner lights, and you can see the glow reflected inside. No glow and no heat usually means an igniter fault, and LG says a failed igniter brings up an error code that varies by model.
No, the bake burner stays on, but the cycle is delayed or starts over because of the lost heat.
A 120V 60Hz supply on a 15-20 amp dedicated circuit, plugged straight into the outlet with no extension cord. A range sharing a circuit is a job for an electrician.
02

Cleaning, recalls and models

Start with a cool oven. Spray at least 2 oz. of water on the walls and corners and pour 8 oz. into the floor dip, from a 10 oz. bottle. Keep the door shut through the cycle of about 20 minutes, then wipe while the soil is still wet. Distilled or filtered water avoids mineral marks. Heavy, baked-on soil needs Self Clean instead.
The cavity is above 150°F, and EasyClean will not start until it cools.
Sabbath mode. It locks the temperature and switches off the timer, light and alarm. On LG's list you leave it by setting Bake, pressing Start, then holding Clock for 3 seconds.
Confirm the range has power and the breaker is on, then wipe the igniter with a dry toothbrush and reseat the burner cap and head. If it still fails, our burner page goes through the rest.
Only if CPSC lists its model and serial; the model sits inside the oven door or on the drawer.

LG oven showing an F code?

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