LG oven F9 code: oven not heating properly

The oven did not heat up as expected after preheating started. LG says this usually means it failed to reach about 150°F within five minutes. A failed bake element, gas igniter or relay board is the usual cause.

Likely causes

Listed from most to least common.

1. Bake element burned out (electric models)
2. Weak or failed igniter (gas models)
3. Gas supply to the range turned off
4. Faulty relay on the main control board
5. Loose wiring or connector to the element or igniter
6. Oven door left open during preheat

How to fix the F9 code

Unplug the oven or switch it off at the breaker before removing any panel or filter.

1. 1

   Step 1: Clear the code

   Press Clear/Off, or turn the oven mode knob to Off on knob models, to stop the beeping.

2. 2

   Step 2: Reset power at the breaker

   Switch off the breaker for the range for 3 to 5 minutes, then switch it back on.

3. 3

   Step 3: Look at the bake element

   On electric models, once the oven is cold, look at the bottom element. Blisters, breaks or burn marks mean it has failed.

4. 4

   Step 4: Check the gas supply

   On gas models, make sure the cooktop burners light. If they do not, the gas may be off to the range. If you smell gas, leave the home and call your gas company.

5. 5

   Step 5: Test with the door closed

   Start Bake at 350°F with the door fully closed and check that the oven warms within a few minutes.

You'll need: Flashlight.

Parts that may need replacing

Check your model number on the label inside the door or on the back before ordering.

• LG oven bake elementCheck prices
• LG gas oven igniterCheck prices

When to call a technician

Call a technician if F9 returns after a power reset, if the element looks fine, or on any gas model. Igniter, gas valve and control board work should be done by a pro.

A typical repair for this code costs $150–$400 in the US, including parts and labor. Prices vary by area and model.

Models this applies to

• Electric and gas ranges (LRE, LRG, LSE, LSG series)
• InstaView and ProBake slide-in ranges
• Induction ranges (LSIL, LSIS series)
• Single and double wall ovens (WSEP, WDEP series)

Codes can differ slightly between models. Your owner's manual is the final word and is available from LG support.

Common questions