LG Air Conditioner Troubleshooting

I need your advice on LG air conditioner troubleshooting. I assume you actually turned it on, and turned
the temperature down. I put that in the category of common sense. You’d be surprised how many HVAC calls end
with someone flipping a switch from heat to cool, in response to someone who said I set
it to sixty and it still does not cool. Though the error code E2 means the indoor temperature
sensor failed. So if I get the E2 error, it is not the thermostat
but the temperature the AC thinks things are. You can check the wires to the control board,
power cycle the unit to reboot the AC control board to see if that fixes it or try to replace
the sensor. And if none of that works, I have to replace
the control board. For that much money, I might as well replace the AC. For a window AC, I’d say yes. For a whole
house air conditioner, the control board is several hundred when a replacement AC is several
thousand. What else should I look for? If it tells you an error code of E1, the temperature
sensor has failed. The trouble shooting of turning off power to the unit and replacing
the sensor are the same as for the E2 error. It is not refusing to work because it thinks
the house is already cold. That’s not the error I’m getting, and the unit isn’t
working right, sometimes not working at all. The E3 error means that it is shut down because
of an abnormal operation error. You can power cycle the control board or check the wiring,
and sometimes it is fixed by replacing temperature sensors. Replacing temperature sensors seems to be
the standard solution. That’s because it is the cheap one to try.
However, you can get the E3 error because the fan blades are vibrating too much or stopped
because the fan is broken, it cannot get enough air due to dirty filters – Replacing the filters is something I probably
need to do anyway. You can get the error if the control panel
is erroring out because it is damaged, whether shorted out after a lightening hit or moisture
that seeped into the unit, or a wire harness is damaged by a squirrel chewing on it. If a squirrel did that, I’d know it by the
barbeque smell coming through the vents. If you smell a burnt smell, it could be a
wiring short or overheating motor or dirty unit carbonizing while it defrosts. And an
overheating motor or condenser will turn off the unit too, so it does not get so hot the
AC catches fire. The only song of fire and ice I want in my
house is the George Martin book, not a fire alarm while the frozen AC burns in the back

Bernard Jenkins


  1. zero . not reliable LG SMART INVERTER FAIL . I bought it for two years and works only 4 month July and August two times and now the outdoor unit is Dead . they said that the mother board is Dead 200 dollars cost and I don't believe them I think the starter capacity fail.

  2. I have a window unit LG Model # LW1016ER. I noticed the temperature in my room was really cool and my A/C temp. read 75. When I turned off my unit I heard the Compressor still running. What causes the Compressor to not turn off? I have tried to reset it, but still no luck.

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