The drain plug on your LG air conditioner is located at the bottom back of the unit, so that it can be drained using the power of gravity.
Some air conditioner models do not need to be drained, but portable air conditioners need to be drained manually to get rid of excess accumulated moisture.
The drain plug on your LG air conditioner is used to prevent the drain port from leaking and it is located at the back of the unit.
Why do air conditioners need to be drained?
During the air conditioning process, moisture accumulates around the evaporator coils of your air conditioning unit.
This happens because cool air contains less moisture than warm air and this process is part of what helps your air conditioner dehumidify your space, as well as cool the space down.
In mini-split units and window units, the draining process is automatic, but in the case of portable air conditioner units, there is no outside unit, which means you may need to drain this moisture manually.
Where is the drain plug on a LG air conditioner?
This is also the case with LG portable air conditioner units. These units accumulate moisture over time, and they need to be drained manually when the “FL” error code is shown on the control panel.
In order to drain this moisture manually, you need to find the drain port of the internal tank of your air conditioning unit. This process relies on gravity to drain moisture out of a drain port.
For this reason, this drain port will always be at the bottom on the back of your air conditioner, as is the case with these LP0721WSR, LP0821GSSM, and LP1217GSR AC models.
This drain port has a screw plug to prevent leaking. You need to unscrew the top of this plug and then remove a smaller, secondary interior screw plug to fully open the drain port.
Once you have located the drain plug on your specific LG portable air conditioner model, it is vital that you understand how to go about removing the drain plug to drain your air conditioning unit accurately.
Owners of units of this brand need to use the drain plug to drain excess moisture when necessary in order to avoid the damage and other negative aspects related to an air conditioner with too much accumulated moisture.
There are also certain factors that could influence how frequently you need to remove the drain plug and drain your LG air conditioner.
How to use the drain plug to manually drain your LG air conditioner
Once you have located the drain plug for your LG air conditioner model, you will be able to drain your unit quite easily. However, before you remove this drain plug, there are a few preparation steps you should follow, such as:
- Ensure that your LG air conditioner is powered off and plugged out
- Ensure that you have a firm and stable platform to put your air conditioner on top of in order to fit the container underneath the drain port conveniently
- Ensure that you have a container without any holes to catch the moisture released when you open the drain plug
- Ensure that you have a towel to dry any spills and to dry the drain plug and hole after all of the moisture has drained out
Then, in the same way, you can unscrew the drain plug and remove the internal drain plug to drain the excess moisture in your LG air conditioner’s internal tank.
Why it is important to use the drain plug to drain the moisture from your LG air conditioner
This drain plug is specifically included in LG portable air conditioning models because unlike with window air conditioning models, such as the LG LW8017ERSM Smart Window Air Conditioner, which has a base pan and Slinger Fan, when moisture builds up in a portable air conditioner this moisture can leak and cause damage to the floors, carpets, and furniture in your house.
Excess moisture can also cause mould and mildew to grow in your unit, and this will result in an unpleasant odour and a possible blockage of airflow within your unit.
Factors that influence how often your LG air conditioner needs to be drained
How frequently you have to go through this drain plug removal process and drainage will depend on a few factors, such as:
| Factor | Description |
| Climate | If you live in an area with high humidity levels, you will likely need to drain your unit more often |
| Settings | The “Cool” and highest fan settings produce more moisture than other settings |
| Usage | The higher your AC usage, the more often you will need to drain your unit |