LG [12H] status codewhat it means

LG are explicit that this one is not an error: 12H "is not an error but indicates the clock needs to be set to 12H (AM/PM) or 24H (Military Time) clock mode". Both buttons in their table open the same explanation, so 24H on the display means the same thing. The appliance has lost its time — LG’s manuals say the clock defaults to 12-hour mode and 12H appears "when the oven is plugged in for the first time or when power resumes after a power interruption" — and rather than pick a format for you it is waiting to be told. Which buttons set it depends on the control panel, and LG publish two sequences.

For panels with plus and minus keys, the help-library procedure has one step in it that nobody guesses: open the door first. With the door open, the plus button steps between the 24-hour and 12-hour options, Enter accepts the format, then plus and minus set the hour, Enter accepts it, plus and minus set the minutes, and Enter finishes; the UK manual for the MS2595DIS gives the same door-open, plus and START/ENTER sequence. For panels with number keys, LG’s manuals for the MS2336GIB and the MS569 series instead say: press and hold Timer/Clock until 12H appears, about three seconds, press START/Enter, key in the hour and minutes on the number keys, and press START/Enter again; pressing Timer/Clock after the first step switches between 12-hour and 24-hour.

The reason this deserves a page is not the difficulty, it is the resemblance. Nothing about "12H" suggests a clock to somebody who has not read the manual, and it looks enough like a fault code that people search for it as one. What it is not is a stop: LG’s manuals say that if you do not want the time of day in the display you can simply press STOP/Clear after plugging in, and their list of reasons an oven does not start is the plug, the door and no cooking time set — not an unset clock. One locale note. "Military Time" is LG’s American phrasing for the 24-hour clock, and it is the only place in their microwave documentation where the wording actually changes the advice rather than just the spelling. In the UK you want the 24-hour option, which is the one their text calls Military.

1. 1

   Look at the panel. If it has plus and minus keys, follow steps 2 to 4. If it has number keys and a Timer/Clock button, skip to step 5.

2. 2

   Open the microwave door and leave it open. LG’s help-library procedure and the MS2595DIS manual both start there.

3. 3

   Press the plus button to move between the 24-hour and 12-hour options, then press Enter (START/ENTER) to accept the format. Choose 24-hour — it is the one LG’s American text calls Military Time.

4. 4

   Use plus and minus to set the hour, then Enter. Use plus and minus to set the minutes, then Enter to finish. Close the door.

5. 5

   On a number-key panel: press and hold Timer/Clock until 12H shows, about three seconds, and press Timer/Clock again if you want 24-hour. Press START/Enter, key in the hour and minutes, and press START/Enter to finish.

6. 6

   If you would rather not have the time showing at all, LG’s manuals say to press STOP/Clear after plugging in. The oven cooks either way — an unset clock does not stop it.