Last updated: 2026-10-30 · By Fix It or Replace editorial team

LG Oven Not Heating? F9, Igniter, Bake Element, Power — Fixes, Costs, Repair vs Replace (2026)

Verdict at a glance

Safety check before any DIY (30 seconds)

Stop and don't start the DIY steps below if any of these is true:

• You smell gas. Don't touch switches or light anything. Turn off the gas if it's safe, leave the home, and call your gas utility from outside.
• You see sparks, smoke, or scorch marks, or the breaker trips again. Leave it off and call a technician.
• The oven is hot. Let it cool fully before touching elements or racks.
• The fix involves the gas valve, regulator internals, igniter wiring, or gas line. That's pro only for most owners.
• A low-voltage code appears. LG says that requires a qualified electrician.
• The range is still under warranty. Use LG's warranty service before removing any panel.
• Recall check: search your model on the CPSC recall site before paying for a repair.

If none of these apply, the free checks below are safe for most owners.

Fix order at a glance (cheapest first)

DIY tiers: Easy (no tools or panels) · Moderate (a panel off, power off) · Advanced (wiring connectors or several parts) · Pro only (gas parts, mains wiring, or still under warranty).

Which LG range do you have?

Your model and serial label is usually visible with the oven door or storage/warming drawer open (your owner's manual shows the exact spot). You need it to order the right element, igniter, or board.

Five-minute checks before you call anyone

1. Error code? Note it, then use the code table below.
2. Settings confirmed? Choose Bake, set the temperature, and press START within 25 seconds — LG cancels unconfirmed changes.
3. Lockout, Delay Start, Sabbath. OVEN LOCKOUT / CHILD LOCK: hold START or LOCK for 3 seconds. DELAY START on the display means it's waiting. 5B is Sabbath mode; your manual shows how to exit (on many models: Bake, set a temperature, Start, then hold Clock for 3 seconds).
4. Breaker. Make sure it's on and the range is on its own circuit. If the breaker is too small for the range, LG says it may trip. Reset it: off 30 seconds, then on.
5. No extension cord. LG says the range must plug straight into the outlet.
6. Door closed. LG says the oven isn't designed for open-door cooking; opening it delays or restarts the cycle as heat escapes (on gas models the bake burner stays on).
7. Gas supply (gas ranges). If the range was recently pulled out, the gas may have been shut off at the home shutoff valve or at the pressure regulator on the range (location varies by model — see your manual).
8. Cooktop burner test (gas). If a surface burner lights normally but the oven won't heat, LG says the issue is likely the control panel and the range needs service.
9. Watch for the igniter (gas). Set Bake and look through the window or the broiler opening: LG says the igniter glows red for about 30–60 seconds, then the burner lights.
10. Elements (electric, oven off and cool). Look for a break, blister, or bright spot on the broil element (top) and on any visible bake element (bottom).

How to know it's fixed: the oven preheats to your set temperature with no F-code, the gas burner lights within about a minute of the igniter glowing (gas), and a trusted recipe cooks in its normal time.

LG range codes linked to "not heating"

LG's US range code list says most codes clear by pressing Power ON/OFF (or CLEAR/OFF); if a code comes back, switch the breaker off for 30 seconds, then on; if it still returns, request service.

Which part each code points at, and how hard the fix is:

Code meanings from LG's US range error-code list (source 1) and LG Canada's F-9 article for the 150°F/5-minute detail (source 4), cross-checked 2026-10-30 against the open ApplianceDB sample, which maps each code to a component, a ranked fix, and a DIY difficulty (source 10). Codes vary by model; your owner's manual has the final list.

Diagnose by symptom → likely part

1. Electric: no bake heat (F9 or F6), broil works

Likely cause: a burned-out bake element, or a failed relay on the control board that feeds it.

Signs: a visible break on an exposed element; one element heats, the other doesn't.

DIY difficulty: Moderate (exposed element); Advanced if hidden under the floor.

2. Gas: cooktop works, oven igniter glows but no flame (or no glow)

Likely cause: a weak igniter that glows but doesn't draw enough current to open the gas valve, or a failed gas valve. HomeGuide lists igniter failure, the gas-oven safety valve, the oven sensor, a blown thermal fuse, gas-line connections, and wiring as reasons a stove works but its oven doesn't.

DIY difficulty: Advanced; pro recommended because it's next to the gas valve.

3. F1, F2, F4, or F16; oven overheats or never reaches temperature

Likely cause: the oven temperature sensor (thermistor) or its connector.

DIY difficulty: Moderate on many models (back of the cavity, a couple of screws and a plug).

4. Nothing heats; display works; codes return after reset

Likely causes: the main control or relay board, wiring, or the house supply (F42).

DIY difficulty: Pro only for most owners.

Related guides: Samsung oven not heating · LG dryer not heating · LG dryer not turning on

Keep it heating

• Confirm settings with START every time.
• Don't cook with the door open; LG says it isn't designed for it.
• Keep the range on its own circuit and off extension cords.
• After moving the range, re-check the gas shutoff and regulator before calling for service.
• Self-clean sparingly; high heat stresses elements and sensors.

What LG's warranty covers on a range

Per LG's US electric oven limited warranty sheet (read 2026-10-30; terms vary by model, so check the sheet that came with yours):

What this means for a cold oven: bake and broil elements, igniters, sensors, and boards are covered in year 1. LG's warranty excludes service calls to correct installation, replace house fuses or correct house wiring, and non-household use — so a voltage or gas-supply problem isn't covered. Keep your proof of purchase.

→ LG US: request a repair · LG US support

Before you pay for any repair: a 4-point check

1. Is it broken? Rule out START, lockout, Delay Start, Sabbath, breaker, voltage, and gas supply.
2. Warranty: year 1 from purchase, and any retailer or credit-card extended protection.
3. Recalls: search your model at cpsc.gov/Recalls.
4. Written quote: ask for part, labor, and trip fee separately, and which part the tech tested to reach the diagnosis.

What it costs: repair parts and pro service (2026)

Part prices checked 2026-10-30 on Sears PartsDirect public search pages (S1–S7). Pro-cost cells tagged [GUIDE] from G1 (Fixr) and G2 (HomeGuide), re-read 2026-10-30; national averages, not LG-specific quotes. Prices change; confirm with your model number.

Repair vs. replace calculator

1. What's the all-in repair cost? → R = trip/diagnostic fee + part + labor + tax, minus anything LG's warranty (or a recall) covers
2. What does a comparable new range cost, all-in? → N = unit + delivery + installation + haul-away (+ gas connector or new cord)
3. How old is your range, and how long should it last? → Age and Life (use about 13 years, between Fixr's 10–15 and HomeGuide's 10–20-year ranges, if you don't know)
4. How much have you spent on repairs in the last 2 years? → Past

Step A — Cost ratio: R ÷ N
Step B — Life used: Age ÷ Life
Step C — Repeat-repair check: (R + Past) ÷ N

Repeat-repair rule: if Step C is over 50%, lean toward replacing.

Worked example 1 (illustrative numbers): A 2-year-old LG gas range won't heat after the kitchen floor was redone. The regulator on the range was left closed. Opening it fixes the oven. R = $0.
→ Not a repair.

Worked example 2 (illustrative numbers): A 7-year-old LG electric range shows F9 after a reset; the hidden bake element has failed. A tech replaces it: R = $320; N = $1,300; no other repairs.
320 ÷ 1,300 = 25%; life used 7 ÷ 13 = 54%; repeat check 25% → Repair (well under 50% of new).

Worked example 3 (illustrative numbers): A 13-year-old LG double-oven range: F9 in the upper oven plus a touch-pad fault. The tech quotes a board and touch pad: R = $700; N = $1,400. It had a $300 igniter last year.
700 ÷ 1,400 = 50%; life used 13 ÷ 13 = 100%; repeat check (700 + 300) ÷ 1,400 = 71% → Replace.

Tips toward replacing: burn damage, several boards at once, rusted cavity, or a range past about 13 years.
Tips toward repairing: it's an element, igniter, sensor, or a closed gas regulator; the range is in year 1.

Why 50%? It's the common rule of thumb, and the one we use (HomeGuide also suggests repairing when the fix costs less than 50% of a new oven). Some technician checklists draw the line a little higher, at about 60% of a new range's price, so treat a repair that costs 50–60% of new as a second-quote zone, not an automatic replace. The older the range, the lower the line should go.

Who services LG ranges near you

1. LG (warranty or official service). In year 1, or for parts still inside LG's longer cooktop coverage.
→ LG US: request a repair

2. A partner appliance pro (out of warranty).
Our call line connects you with an independent appliance repair provider in your area. Tell them gas or electric, the F-code, whether broil works, and whether the gas igniter glows.

3. Your gas company or a licensed installer. If the gas supply, regulator, or connection is the issue.

4. An electrician. For F42 / low-voltage codes, a non-dedicated circuit, or a breaker that's too small.

Questions to ask any technician:

• Did you measure the element, igniter current, or sensor resistance?
• Is it the element or the relay board feeding it?
• Can you split the quote into part, labor, and trip fee?
• What warranty do you give on your labor?

Optional: is an appliance warranty worth it?

A home warranty (service contract) can cover range repairs for a yearly fee plus a per-visit service fee. Many plans cap payouts or exclude glass cooktops and pre-existing problems; read the terms before you buy.

FAQ

Why is my LG oven not heating?
LG's checks: look for an F-code, confirm settings with START within 25 seconds, clear Oven Lockout or Delay Start, make sure the range is on its own powered circuit with no extension cord, and on gas models check the gas shutoff, regulator, and igniter. If it still won't heat, the element, igniter, sensor, or board likely needs service.

What does F9 mean on an LG oven?
The oven isn't heating properly. LG Canada's support says it means the oven didn't reach 150°F within 5 minutes of preheating. Clear it, reset the breaker, and call for service if it returns.

Why does my LG gas cooktop work but the oven doesn't?
LG says that usually points to the control panel and needs service. The igniter, gas valve, and sensor are also common causes; watch whether the igniter glows for 30–60 seconds.

How long does the LG oven igniter glow before lighting?
LG says the hot-surface igniter glows red for about 30 to 60 seconds, then lights the bake burner.

What power does an LG range need?
LG lists 120/208V or 120/240V, 60Hz, 40–50 amp dedicated circuits for freestanding electric ranges, and 120V, 60Hz, 15–20 amp dedicated circuits for freestanding gas ranges. No extension cords.

How much does it cost to fix an LG oven that won't heat?
Fixr puts most oven repairs at $150 to $400. LG bake elements were listed at about $75 to $232 and gas igniters at about $240 to $369 on Sears PartsDirect when we checked on 2026-10-30.

Should I replace an LG range that won't heat?
Rarely for a single element, igniter, or sensor. Consider replacing if the board and other parts fail together on an older range.

About the author

Fix It or Replace editorial team — We research appliance repairs using manufacturer documentation, parts-supplier data, and current US cost guides, and we cite every source below. We are not appliance technicians; for anything involving gas or wiring, call a qualified pro.
Last updated: 2026-10-30.

Sources

1. LG US Support: "LG Range - Error Codes List" (updated 04/20/2026; thermistor errors: Power ON/OFF, breaker off 30 seconds, service; touch-pad/metal-object error; display error; low voltage requires a qualified electrician). https://www.lg.com/us/support/help-library/lg-range-error-codes-list--20150154166283 (accessed 2026-10-30)
2. LG US Support: "Oven Not Heating - Gas Ranges" (updated 04/20/2026; check F-codes; press START within 25 seconds; dedicated 120V 60Hz 15–20 A circuit; no extension cord; door open during cooking; home gas shutoff and pressure regulator; hot-surface igniter glows red about 30–60 seconds). https://www.lg.com/us/support/help-library/oven-not-heating-gas-ranges--20150331140211 (accessed 2026-10-30)
3. LG US Support: "LG Electric Range / Gas Range: Power Issues" (updated 04/20/2026; dedicated breaker; electric 120/208V or 120/240V 60Hz 40–50 A; gas 120V 60Hz 15–20 A; no extension cord; OVEN LOCKOUT / CHILD LOCK hold START or LOCK 3 seconds; DELAY START; gas: if a surface burner ignites, the control panel may need service). https://www.lg.com/us/support/help-library/lg-electric-range-gas-range-power-issues--1430141359009 (accessed 2026-10-30)
4. LG Canada Support: "Electric Range: 'F-9' error code" (F-9 = oven failed to reach 150°F after 5 minutes of preheat; possible causes shorted element, defective relay board or connector, electrical fault; Clear/Off; unplug or breaker off 3–5 minutes; gas: check main and oven gas shutoff valves; repeat → service). Used for code detail only; US instructions above take priority. https://www.lg.com/ca_en/support/product-support/troubleshoot/help-library/cs-CT20098047-1334149158351/ (accessed 2026-10-30)
5. LG Electric Oven Limited Warranty – USA (one year parts, labor and in-home service; five years glass cooktop thermal-shock crack and radiant surface unit, parts only, labor not included years 2–5; exclusions incl. installation correction and house wiring). LG's PDF at https://www.lg.com/us/PDF/warranty/ha/Cooking_Range_ElectricGlass.pdf blocks automated download; we read the same LG document as hosted by a retailer: https://content.abt.com/documents/28283/LG_electric_ovn_warranty.pdf (accessed 2026-10-30)
6. LG US: request a repair. https://www.lg.com/us/support/repair-service/schedule-repair
7. U.S. Consumer Product Safety Commission: recalls search. https://www.cpsc.gov/Recalls (accessed 2026-10-30)
8. Federal Trade Commission: endorsement and affiliate disclosure guidance. https://www.ftc.gov/business-guidance/resources/ftcs-endorsement-guides-what-people-are-asking
9. Part prices and repair cost guides: Sears PartsDirect (S-list), Fixr (G1), HomeGuide (G2), see below (accessed 2026-10-30).
10. ApplianceDB free developer sample (LG US range codes with component, ranked fix, and DIY difficulty; used to cross-check source 1, including Sabbath-mode exit steps). Data under the Open Database License (ODbL) v1.0. https://github.com/ApplianceDB/ApplianceDB-public (accessed 2026-10-30)

Part price sources (Sears PartsDirect public search results, USD, accessed 2026-10-30; prices change, confirm with your model number):

• S1. Search "lg range bake element": MEE36593201 $74.98, MEE62306405 $91.23, MEE62864902 $118.75, MEE61925304 $123.64, MEE36593202 $231.98 (brackets, wall-oven MEE41716502 and other brands excluded). https://www.searspartsdirect.com/search?q=lg%20range%20bake%20element
• S2. Search "lg range broil element": MEE62306504 $88.67, MEE61945104 $183.92, MEE36592904 $190.87, MEE62306301 $451.93 (other brands excluded). https://www.searspartsdirect.com/search?q=lg%20range%20broil%20element
• S3. Search "lg range igniter": MEE61841401 $239.51, EBZ37171601 $335.90, EBZ37171602 (bake) $368.71 (switch harness and other brands excluded). https://www.searspartsdirect.com/search?q=lg%20range%20igniter
• S4. Search "lg range temperature sensor": EBG61305805 $70.74, EBZ37191706 $190.87 (other brands excluded). https://www.searspartsdirect.com/search?q=lg%20range%20temperature%20sensor
• S5. Search "lg range control board": EBR74164812 $130.91, EBR82400801 $149.80, AGM30025905 $154.28, EBR80595701 $182.92, EBR57124701 $186.90, EBR85103101 $234.20, EBR60938302 $248.01, EBR80595604 $249.70, EBR89296005 $262.15, EBR80595308 $284.45, EBR77562706 $285.99, EBR77562712 / EBR80595311 / EBR77562703 $299.16, EBR74632605 $335.90, AGM30025903 $373.75 (support bracket and EBR52349502 at $25.27 excluded as an outlier). https://www.searspartsdirect.com/search?q=lg%20range%20control%20board
• S6. Search "lg range convection fan motor": EAU61865302 $108.84, EAU62343001 $116.90 (other brands excluded). https://www.searspartsdirect.com/search?q=lg%20range%20convection%20fan%20motor
• S7. Search "lg range gas valve": EBZ37171801 valve and regulator $105.42, MJX62571702 $213.51, MJX61842301 $273.60, MJX62571701 $368.71, MJX62111702 $405.55 (other brands excluded). https://www.searspartsdirect.com/search?q=lg%20range%20gas%20valve

Pro-cost guide sources [GUIDE] (US national averages, parts + labor, not brand-specific quotes; the guide pages carry 2024–2025 dates, so local quotes may differ):

• G1. Fixr, "How much does it cost to repair an oven?" (updated August 29, 2025): average $150–$400; electric $100–$200; gas $100–$600; broken bake element $100–$300; heating element $150–$400; igniter replacement $200–$350; sensor $100–$250; control board replacement $200–$600; fan motor $100–$250; gas valve $100–$200; labor $50–$200/hr; new oven $600–$1,600 (same type) or $750–$2,700 (switching type); ovens last 10–15 years. https://www.fixr.com/costs/oven-repair (accessed 2026-10-30)
• G2. HomeGuide, "How Much Does Oven Repair Cost?" (modified September 4, 2024): average $150–$350; igniter $150–$325; heating element $150–$450; control board $150–$600; sensor $100–$250; thermal fuse $100–$250; gas-oven safety valve $150–$400; fan motor $100–$250; labor $50–$125/hr; new oven $700–$1,600; ovens last 10–20 years; repair when under 50% of a new oven; why a stove works but not the oven. https://homeguide.com/costs/oven-repair-cost (accessed 2026-10-30)

Disclosure

Fix It or Replace is an independent site. We are not affiliated with, endorsed by, or sponsored by LG. "LG" is a trademark of its owner and is used here only to describe the products we cover.

• Affiliate links: Some part links go to retailers such as PartSelect and RepairClinic. If you buy through them, we may earn a commission at no extra cost to you.
• Call line: Phone numbers labeled "partner pro" are operated by a third-party lead service that routes your call to an independent repair provider in your area. We may be paid for calls. We don't employ the technicians, and we don't guarantee their work, pricing, or availability. Confirm licensing, insurance, and quotes directly with the provider.
• Prices are estimates and change often. Always get a written quote.
• Safety: Switch off power (and gas) before working on a range. If you smell gas, leave and call your gas utility. If you're unsure, call a qualified professional.

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