ErrorCodeDoctor
LG Microwave 24H error code
24H is not an error code. It means the microwave clock has not been set yet and is prompting you to choose between 24-hour (military time) or 12-hour (AM/PM) clock mode. This typically appears after a power outage or when the microwave is first set up. Setting the clock takes about a minute and requires no tools.
Common causes
- Clock was reset after a power outage or interruption
- Microwave was newly installed and the clock has not been set yet
How to fix it
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1
Open the microwave door
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2
Tap + as many times as needed to flip between the 24H and 12H clock formats
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3
Press ENTER to confirm the clock mode
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4
Press + or - to select the desired hour then press ENTER to set it
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5
Press + or - to select the desired minutes then press ENTER to finish setting the clock
Related LG Microwave error codes
24H error — frequently asked questions
What does the 24H error mean on a LG microwave?
The display is asking you to choose the 12-hour or 24-hour clock format — not an error
What causes the 24H error?
The 24H error is usually caused by: Clock was reset after a power outage or interruption; Microwave was newly installed and the clock has not been set yet.
Can I fix the 24H error myself?
Yes — this is rated an easy fix that most people can do themselves, typically in 1m.
How much does it cost to fix the 24H error?
Fixing the 24H error on a LG microwave typically costs $0, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my microwave with the 24H error?
In most cases yes, but it's best to address the 24H error soon — see the fix steps below to resolve it.