📡Microwave

LG · LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean

LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean SE Error Fix: Sensor Error / Key Input Error

Key stuck or sensor touch circuit continuously activated. Similar to F-3 on newer models with capacitive touch. Disconnect power 60 seconds. Check for moisture/steam damage. Replace touch panel or control board if persistent.

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error SE on the LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean means: Sensor Error / Key Input Error. The top-ranked community fix is “Replace Touchpad or Control Board Assembly” (medium difficulty, ~60 min, DIY cost: $15-$30). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · microwave

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many microwave repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $120-$200.

Other LG Models with Error SE

WM3600HWA 4.5 cu. ft. Smart Front-Load Washer with TurboWash 360

washer · 2 fixes

WT7150CW 5.0 cu. ft. Top-Load Washer with TurboDrum

washer · 2 fixes

Other LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean Error Codes

DOOR SWITCH FAIL

Door Switch Failure

2 fixes

EXHAUST FAN NOISE

Exhaust Fan Motor Noise/Failure

2 fixes

F-1

Open Thermistor / Thermal Error

Shorted Thermistor

Touchpad Shorted Key

Humidity Sensor Error

Control Board Error

Magnetron Failure

People Also Ask About LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean Error SE

What does error code SE mean on a LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean?

Error code SE on the LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean means: Sensor Error / Key Input Error. Key stuck or sensor touch circuit continuously activated. Similar to F-3 on newer models with capacitive touch. Disconnect power 60 seconds. Check for moisture/steam damage. Replace touch panel or control board if persistent.

How do I fix error code SE on my LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean?

The most successful fix is "Replace Touchpad or Control Board Assembly" (medium difficulty, ~60 minutes). Estimated DIY cost: $15-$30. HomeMD has 2 community-ranked fixes for this error.

Is error code SE on a LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean error SE myself?

Yes — the top-ranked community fix ("Replace Touchpad or Control Board Assembly") is rated medium difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Flathead screwdriver, Multimeter.

How much does it cost to repair LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean error SE?

DIY cost: $15-$30. Professional repair typically costs $120-$200. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean have?

The LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean has 8 other known error codes, including: DOOR SWITCH FAIL (Door Switch Failure), EXHAUST FAN NOISE (Exhaust Fan Motor Noise/Failure), F-1 (Open Thermistor / Thermal Error), F-2 (Shorted Thermistor), F-3 (Touchpad Shorted Key), and 3 more.

Which other LG models have the SE error?

Error code SE also appears on 2 other LG models: WM3600HWA 4.5 cu. ft. Smart Front-Load Washer with TurboWash 360, WT7150CW 5.0 cu. ft. Top-Load Washer with TurboDrum. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean have?

The LG LMHM2237ST 2.2 cu. ft. Over-the-Range Microwave with EasyClean has 8 other known error codes:

DOOR SWITCH FAIL — Door Switch Failure (2 fixes)
EXHAUST FAN NOISE — Exhaust Fan Motor Noise/Failure (2 fixes)
F-1 — Open Thermistor / Thermal Error (2 fixes)
F-2 — Shorted Thermistor (2 fixes)
F-3 — Touchpad Shorted Key (2 fixes)
F-4 — Humidity Sensor Error (2 fixes)
F-5 — Control Board Error (2 fixes)
MAGNETRON FAIL — Magnetron Failure (2 fixes)

Which other LG models have the SE error?

Error code SE also appears on 2 other LG models:

WM3600HWA 4.5 cu. ft. Smart Front-Load Washer with TurboWash 360 (washer) · 2 fixes
WT7150CW 5.0 cu. ft. Top-Load Washer with TurboDrum (washer) · 2 fixes

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