An LG portable air conditioner can be an excellent investment, providing much-needed comfort during the hot summer. However, it can be frustrating and uncomfortable if you’re experiencing issues with your LG portable air conditioner not cooling.
Fortunately, there are various solutions to this problem. In this blog post, we’ll review 8 of the most effective techniques to fix an LG portable air conditioner that isn’t cooling.
Why is your LG Portable Air Conditioner Not Cooling?
There are several reasons why an LG portable unit may not be cooling properly. Here are some of the most common causes:
- Dirty air filters – If the air filters are clogged with dirt and debris, the unit may be unable to circulate cool air effectively.
- Low refrigerant levels – If the refrigerant levels in your LG portable air conditioner are low, the unit may not be able to cool the air properly.
- Blocked condenser coils – If the condenser coils in your LG portable air conditioner are blocked by dirt and debris, the unit may be unable to cool the air effectively.
- Faulty compressor – If the compressor in your LG portable air conditioner is not working properly, it may not be able to cool the air properly.
- Faulty thermostat – If the thermostat in your LG portable air conditioner is not working properly, it may be unable to manage the temperature.
- Air leaks – If air circulates around the window or door where the LG portable air conditioner is installed, cool air may escape, making it difficult for the unit to vent the heat effectively.
- Overheating – If the LG portable air conditioner is overheating, it may not be able to cool the air effectively.
- Incorrect placement – If the LG portable air conditioner is placed in an area with too much sunlight or heat, it may struggle to cool the space effectively.
How to Fix an LG Portable Air Conditioner Not Cooling?
Now that we’ve identified some of the most common causes of an LG portable air conditioner not cooling let’s explore some of the most effective solutions:
1. Clean or Replace the Air filter
Cleaning or replacing air filters is one of the most common solutions to an LG portable air conditioner not cooling. Air filters can get clogged with dirt and debris over time.
With a dirty filter, the airflow is restricted, which can cause the unit to overwork and eventually break down.
To clean or replace the air filters in your LG portable air conditioner, turn off the power button and unplug it from the power source.
Remove the filter cover, locate the air filter, which is usually behind the front grille of the air conditioner, remove the grille, and remove the air filter. For more information, check the service manual.
If you have a washable filter, gently rinse it under warm water until all the dirt and debris have been removed. Be careful not to damage the filter.
If the air filter is not washable, it must be replaced. Select the correct filter for your LG portable air conditioner model.
2. Check and Refill Refrigerant levels.
Low refrigerant levels are another major cause of an LG portable air conditioner not cooling. The material that cools the air inside the unit is known as refrigerant. If the refrigerant levels are low, the air conditioner will struggle to cool the air adequately.
Depending on its severity, a refrigerant leak can prevent your AC from blowing cold air.
Leaks or faulty installation might result in low refrigerant levels.
You’ll need to hire a professional HVAC technician to check and refill refrigerant levels, as this requires specialized equipment and training.
The technician will inspect the unit for leaks and repair any leaks before refilling the refrigerant.
3. Clean Condenser coils.
Cleaning the air conditioner coils is another effective way to fix an LG portable air conditioner not cooling. The condenser coils are in charge of transferring heat from the inside of the unit to the outside.
First, clean the condenser coils, and turn off and unplug the LG portable air conditioner from the power source. Locate the condenser coils, usually at the back of the unit.
Use a soft-bristled brush or a vacuum cleaner to gently remove any dirt, dust, or debris that may have accumulated on the coils.
Be careful not to damage the coils, as they can be delicate. If the coils are severely blocked, you may need to use a coil cleaner solution to clean them or call a professional.
4. Repair or Replace the compressor.
The compressor is the heart of the LG portable air conditioner, responsible for circulating the refrigerant throughout the unit. If the compressor fails to perform properly, the air conditioner will not cool the air adequately.
A faulty compressor can be caused by wear and tear or damage from power surges or other electrical issues.
Repairing or replacing the compressor in an LG portable air conditioner is a complex and costly process that a qualified HVAC technician should only do.
The technician will first diagnose the problem and determine if the compressor can be repaired or needs replacing.
If the compressor can be repaired, the technician will replace damaged components with the same model, such as the compressor motor or capacitor.
If the compressor needs to be replaced, the technician will remove the old compressor and install a new one with the same model.
5. Calibrate or Replace the Thermostat.
The thermostat of an conditioner controls the temperature of the air blasted into the room. If the thermostat is not working properly, it may be unable to detect the temperature precisely, causing the machine to overwork or underperform.
A faulty thermostat can be caused by wear and tear or electrical issues.
Calibrating or replacing the thermostat is an effective way to fix an LG portable air conditioner not cooling. To calibrate the thermostat, turn off and unplug the unit from the power source. Locate the thermostat and remove the cover.
Use a small screwdriver to adjust the calibration dial, usually near the back of the thermostat.
Turn the dial clockwise to increase the temperature or counterclockwise to decrease it. Make small adjustments and test the unit to see if the temperature has improved.
If the thermostat cannot be calibrated or is still not functioning correctly, it may need to be replaced.
Replacing the thermostat is a relatively simple process that a DIY enthusiast can do. However, it’s essential to ensure you have the correct model replacement part and follow the manufacturer’s instructions carefully.
6. Seal Air leaks.
Air leaks can be another common cause of the conditioner not venting the air properly through the exhaust hose.
When cool air escapes through gaps around the window or door where the unit is installed, the conditioner will have to work harder to cool the space, resulting in poor cooling performance.
Sealing air leaks is a relatively easy fix for an LG portable air conditioner not cooling. Start by inspecting the area around the window or door where the unit is installed.
Look for any gaps or cracks where air may not vent properly.
Use weather stripping or caulk to seal any gaps around the window or door. Make sure to use materials appropriate for your window or door type and designed to withstand the elements.
7. Allow LG Portable Air Conditioner to cool down.
If the conditioner overheats, it may not cool the air effectively. A dirty air filter can cause overheating, blocked condenser coils, or other issues that restrict airflow and cause the unit to overwork.
Allowing the LG portable air conditioner to cool down is a simple fix for an overheating unit. First, turn off the air conditioner and unplug it from the power source.
Remove any obstructions around the unit, such as furniture or curtains that may block airflow.
Next, let the unit sit for at least an hour to cool down completely. This will allow the internal components to cool and reset.
8. Move LG Portable Air Conditioner to a better location.
If the LG portable air conditioner is placed in an area with too much sunlight or heat, it may struggle to cool the space effectively.
The heat from direct sunlight can cause the unit to work harder and consume more energy, resulting in poor cooling performance.
Moving the conditioner to a better location is an effective way to fix this issue. When selecting a new location, choose a cool spot that is shady and away from direct sunlight.
Also, ensure the unit is placed on a flat surface and not too close to any obstructions that may block airflow. You can also use the conditioner in Dry mode. Also, check the Water collection tank or if your AC is not on the FAN mode.