SE / 6E
LG Microwave
Severity: ModerateWhat Does This Error Mean?
LG microwave SE (or 6E on some models) means the control panel has detected a shorted or stuck key on the touchpad. Unplug the microwave for 30-60 seconds to reset. If SE returns, the membrane touchpad needs replacement — this is a common LG microwave fault.
Affected Models
- LG Over-the-Range Microwave
- LG NeoChef Countertop Microwave
- LG LMV Series
- LG LMVH Series
- LG LMC Series
Common Causes
- Membrane touchpad key stuck or shorted — a button is detected as permanently pressed
- Moisture seeping under the touchpad from cleaning or steam
- Touchpad membrane degraded from heat and age
- Control board wiring to the touchpad partially disconnected
How to Fix It
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Unplug the microwave for 60 seconds.
A power reset clears the fault if it was triggered by a transient event (power surge, momentary moisture). Plug back in and test immediately. If the microwave operates normally, monitor over the next few days — if SE does not return, no further action is needed.
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Inspect the touchpad for visible damage.
Look at the keypad surface for any key that appears slightly sunken, sticky, or warped. Gently press each key — each should have a consistent click or tactile response. A key with no resistance or that stays slightly depressed is the likely shorted key.
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Clean around the keypad edges.
Grease, steam, and cleaning liquid can seep under the edge of the keypad membrane. Unplug the microwave. Run a dry cloth firmly along the edge of the touchpad to absorb any surface moisture. Allow 24 hours for internal moisture to evaporate before plugging back in.
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Replace the touchpad membrane.
If SE returns consistently after a power reset, the touchpad membrane has failed internally. LG microwave touchpads are model-specific — find your full model number on the door frame sticker and order the matching part. Replacement touchpads are available from LG Parts and appliance parts suppliers.
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Consider a combined touchpad and control board replacement.
On many LG microwave models, the touchpad and control board are sold as a single assembly. If the touchpad alone is unavailable for your model, the combined assembly replaces both components. An LG-authorised technician can confirm which parts apply to your specific model.
Frequently Asked Questions
Is the LG SE error dangerous?
The SE error locks out all microwave functions — the microwave will not operate while it is active. This is a safety feature, not a dangerous condition. The microwave itself is safe, it simply cannot be used until the touchpad fault is resolved.
Why is the SE error so common on LG microwaves?
LG over-the-range microwaves are installed directly above the cooking surface. Heat, grease vapour, and steam from cooking rise directly onto the control panel, degrading the touchpad membrane over time. This is a known design vulnerability — the SE error is one of the most frequently reported LG microwave faults.