LG Microwave Error Code F-11

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 10, 2026

⚠ Medium Severity 🔧🔧 Moderate DIY

Shorted key on control panel

The most common cause of the F-11 error on a LG microwave is control panel membrane shorted (~75% of cases); start with: power cycle.

💰 DIY cost: $40–$90 👨‍🔧 Pro cost: $150–$280 Save $110+ by doing it yourself

LG Microwave error code F-11 on the display panel — How the F-11 code appears on a LG microwave display

What Does Error Code F-11 Mean on a LG Microwave?

Shorted key on control panel.

F-11 fires when the control board reads a key line as continuously closed, interpreting it as a stuck or shorted button. During its scan of the keypad matrix, the board detects a signal that never releases, so it locks out input to prevent unintended operation. This differs from a broadly unresponsive panel by pointing at a single shorted key or trace, usually from moisture or grease bridging the membrane contacts rather than a dead board.

Models affected: LG microwaves with membrane touch-key control panels, including countertop and over-the-range models

What owners report: Owners commonly report F-11 appearing after cooking steam, spills, or heavy grease buildup near the panel, and a two-minute unplug sometimes clears a transient short. If the code returns quickly, it usually points to a worn or contaminated touchpad membrane that needs replacing.

What Causes Error Code F-11?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

1

Control panel membrane shorted 75% of cases
2

Liquid damage to panel 20% of cases
3

Control board failure 5% of cases

How to Fix LG Microwave Error Code F-11

🔧🔧 Moderate DIY Est. time: 30–60 min

⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.

1

Power cycle

Unplug 2 minutes.
2

Replace control panel/touchpad

F-11 indicates membrane failure.

🔩 LG microwave touchpad ($40–$90)

How to Reset Error Code F-11

Unplug 2 minutes. Replace touchpad if F-11 persists.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Did this guide fix your appliance?

When to Call a Professional

If new touchpad and F-11 persists, control board failed.

Average professional repair cost for this issue: $150–$280

Related Error Codes

F-6

Keypad/touchpad failure

⚠ Medium Severity

Same Code on Other Brands

Error code F-11 appears on these other brands too. See every brand that shows F-11 →

Frigidaire Oven F11

Shorted key — button stuck or shorted

Miele Washing Machine F11

Pump fault — water not draining

Miele Dishwasher F11

Drainage fault — water not pumped out

Electrolux Oven F11

Shorted keypad key detected

Find Replacement Parts

Use these links to find the exact replacement parts for your LG Microwave:

🔩

Search PartSelect

LG Microwave repair parts

🔧

Search RepairClinic

Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More LG Microwave Error Codes

F-3 Temperature sensor error — over-temperature detected

Frequently Asked Questions

Can I keep using my LG Microwave when error F-11 appears? +

You often can for a cycle or two, but the control-panel issue behind F-11 will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.

What most commonly causes F-11 on a LG Microwave? +

Across reported LG microwave repairs, the most frequent is control panel membrane shorted (75% of cases), liquid damage to panel (20%), then control board failure (5%). Check them in that order before replacing any parts.

F-11 keeps coming back after a reset — what should I check next? +

A reset only clears the stored F-11 fault; if it returns, the control-panel problem is still present. Move on to the physical checks — power cycle, then replace control panel/touchpad — since the code will reappear until the root cause is resolved. This is a moderate job — a multimeter and some disassembly are usually involved.

How much does it cost to fix LG Microwave error F-11? +

A DIY repair typically runs $40–$90 in parts, versus $150–$280 for a professional service call, so handling it yourself saves around $110. Expect the work to take roughly 30–60 minutes.

Which LG Microwave models show error F-11? +

F-11 is documented on LG microwaves with membrane touch-key control panels, including countertop and over-the-range models. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

• LG Support — Help Library — official manufacturer documentation
• Our editorial & verification policy

Content verified against manufacturer service documentation. Last verified: June 10, 2026.

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