Guide 4: Some interior elements of LG Air Conditioner

To reach this point with the air conditioner casing removed, we will have performed the Teardown Guide 1:

We can see the intake or ambient temperature sensor (black bulb), which measures the air temperature in the room and is therefore what dictates the unit's shut-off cycles; sometimes, the unit may stop for no apparent reason, theoretically because it has reached the room temperature.

It may be useful to move it slightly up or down by unhooking it from its white support or by gently pulling on the cable.

The unit's cooling temperature sensor is not strictly the discharge sensor, but it does measure the level of cold generated in the coil tubes, as it is inserted into a holder soldered to the copper tube in direct contact with the coil. This sensor generally does not fail.

Lubricate the accessible part of the turbine; this can be done with WD-40, but it is not recommended as it may cause the shaft to make noise when spinning. It is advisable to use grease or petroleum jelly. This shaft is usually visible and corresponds to the motor side.

On the other side of the device, the shaft is typically not visible, so lubricating it would require disassembling more parts of the device.

Moving window, moving louver, diffuser, or Flap motor; this Flap tends to fail over the years, failing to close properly, coming loose, or failing to oscillate as it should. This is due to motor wear or breakage of the internal gears. To solve the problem, the motor must be replaced; it has a low cost.

Most of these motors are easy to find on AliExpress or air conditioning spare parts websites.

Motor Diagnostics Guide 2:

Motor Replacement Guide 3: