LG microwave fault codes
LG publish a real code table with a meaning for each entry, and then hide it behind seventeen buttons with no address of their own. Find your code below for what LG themselves say it is.
Where the code shows on a LG
LG use three separate display conventions and it helps to know which one you are looking at. Codes beginning F are faults, numbered rather than named, and LG list F1, F2, F3, F4, F5, F11, F13, F14, F15, F16, F17 and F19 — with no F6 to F10, no F12 and no F18 anywhere in their microwave documentation, whatever third-party tables claim. E10 is the one code outside the F range, and unusually LG give an owner action for it. Then there are three displays that are not faults at all: LOC is the child lock, DOOR is a door that has not latched, and 12H or 24H is the clock asking to be set rather than anything being wrong. Two published oddities worth knowing before you go looking for a distinction that does not exist. F16 and F19 are documented by LG with identical wording, so both mean a heating problem and nothing in their material separates them. And the modal covering F13, F14 and F15 is titled for all three and explains only F13, so F14 and F15 have no published meaning of their own.
How to reset a LG
LG attach the same first move to every F code and it is worth doing before anything else: unplug the appliance at the socket, plug it back in, and see whether the same code returns. Their wording is that symptoms "may occur due to a temporary error", and if the code does not come back there was nothing to fix. For E10 they are more specific and give a duration — unplug the microwave for one minute. If a code survives that cycle, LG treat it as real and their instruction is an inspection rather than another attempt. There is no button combination to clear a fault on these appliances and no service menu an owner is given, so anybody offering you one is not quoting LG. The child lock is the exception, because it is not a fault: LOC clears by holding STOP/CLEAR until the display drops it, and nothing needs unplugging.
Most common LG faults
The LG codes people look up most.
- F3Get it checkedLG document this one twice and differently. One article says wipe the touch panel, the other says the control panel is faulty and needs service.
- LOCUsually simple to fixNot a fault. LOC is LG’s child lock, and it releases by holding STOP/CLEAR until the display drops it.
- DOORGet it checkedThe word DOOR rather than a number. LG say the door is not closed or the latch is not engaged, and they include transit packing as a cause.
- F16Get it checkedLG say a heating issue was detected. They publish F19 with word-for-word identical text, so both codes land here.
Every LG fault code
13 published codes. Filtering happens in the page — every one is in the HTML.
Showing 13 of 13 codes
LG models
Codes can differ between generations. Check yours.
Guides that help with LG faults
How to reset a microwave, and what the display means
Every make says unplug it, but the seconds differ. What each brand publishes, the displays that are not faults, and what to do with a code nobody publishes.Read the guideMicrowave faults: what you can fix, what you must not open
The plug fuse, the door, the waveguide cover and a mug of water are yours. Everything behind the casing is not, and unplugging it does not change that.Read the guide
Looking for LG’s own support? www.lg.com. We are not affiliated with LG.