Imagine turning on your portable LG air conditioner only for it to fail to blow cold air. The heat associated with an LG portable air conditioner not blowing cold air can be unbearable, especially during the summer, and that’s why you should troubleshoot it fast.
Your LG portable air conditioner isn’t blowing cold air because of a wrong capacity or setting, filthy air filter or condenser coils, vent blockage, poor insulation, collected condensate, low refrigerant, or failed component.
In our case, the failed component could be the compressor, exhaust fan, or thermostat; if that’s the case, you must replace it. So, consider all the ten issues I’ve mentioned if you want your portable AC back cooling.
But before we can discuss these issues, performing a reset is essential. In some cases, all you’ve to do to get your portable AC back to blowing cold air and cooling your space is resetting it.
Let’s jump into it!
In a hurry? Consider the ten issues below to troubleshoot your non-cooling portable LG air conditioner:
LG Portable Air Conditioner Not Blowing Cold – Quick Troubleshooting Guide
|1.||Wrong Capacity||Match your space with the correct AC BTU rating.|
|2.||Wrong Setting||Set the thermostat and the fan correctly.|
|3.||Insufficient Clearance||Leave a clearance of at least 20 inches around the portable unit.|
|4.||Filthy Air Filter||Clean the air filter.|
|5.||Filthy Condenser Coils||Clean the condenser coils.|
|6.||Vent Blockage||Clean the vent if it’s filthy and ensure it’s correctly positioned to prevent positional blockage.|
|7.||Poor Insulation||Seal openings on the walls and around the doors and windows|
|8.||Collected Condensate||Drain out the collected water from the collecting tank.|
|9.||Low Refrigerant||Call an AC professional.|
|10.||Failed Component||Replace the compressor, exhaust fan, or thermostat if defective.|
How to Reset LG Portable Air Conditioner?
As I mentioned, it may help to begin your LG portable air conditioner troubleshooting with a reset. Hence, only proceed with the ten checks in the table above when it fails.
And now, here’s how to quickly reset the portable unit:
- Plug out the unit for at least 30 seconds
- Plug it back on and restart it
- Consider the ten issues below if the air conditioner doesn’t start blowing cold.
Why Is My LG Portable AC Not Blowing Cold Air?
Well, the chances are that your LG portable air conditioner is not blowing cold air because of one of these ten reasons:
1. Wrong Capacity
Your portable AC should match the room size you are trying to cool. The air conditioner won’t blow cold air if it has a smaller capacity, expressed as British Thermal Unit (BTU).
So, before you consider your LG portable air conditioner faulty, ensure it’s the correct capacity.
Below is a table to guide you on the correct Ac capacity for your space. If your AC capacity doesn’t match your space size, you should get probably get a different unit.
|Maximum Room Size||AC BTU Rating (Capacity)|
|200 square-feet||7,000 BTU|
|250 square-feet||8,000 BTU|
|300 square-feet||10,000 BTU|
|350 square-feet||11,000 BTU|
|400 square-feet||12,000 BTU|
|500 square-feet||13,000 BTU|
|600 square-feet||14,000 BTU|
2. Wrong Setting
There are two necessary settings to check when your portable air conditioner won’t cool.
First, check the thermostat setting to ensure the thermostat is indicating a lower reading than the room temperature and preferably on Cool Mode. It may not blow cold air if it’s on another mode; the same goes for a higher thermostat setting.
Second, check the fan setting. The fan won’t blow enough air if set at a low speed. So, you may think it’s not blowing any air at all.
Consider setting the thermostat lower, preferably running on Cool Mode. Meanwhile, check the fan setting and set it on high speed – just in case that’s not the case.
3. Insufficient Clearance
Your air conditioner requires enough clearance around it to blow air properly. If it’s too close to the wall or cabinets, they’ll obstruct its airflow, causing it to fail to blow cold air.
Consider maintaining a clearance of at least 10 inches around the air conditioner. That’ll give it enough room for air exchange.
4. Filthy Air Filter
Over time, the air filter accumulates dirt and becomes filthy. Sadly, a dirty air filter decreases airflow and slows the air conditioner’s ability to blow cold air. The issue is, however, avoidable by regularly inspecting and cleaning the filter.
Consider uninstalling the air filter and cleaning it before reinstalling it. Remember to use mild soap and warm water when cleaning the air filter and ensure it dries up before reinstalling it.
5. Filthy Condenser Coils
The condenser coils, like the air filter, accumulate dirt over time. When they do, the filthiness interferes with airflow, making it harder for the air conditioner to blow cold air.
Inspect the condenser coils, and if they are filthy, clean them. You can use a condenser cleaning brush, which is available online, more so on Amazon.
6. Vent Blockage
The vent can also accumulate dirt and become filthy. Once that happens, it stops the flow of cold air and could be why the AC won’t blow cold air.
But still, it could be that the vent is improperly positioned and thus cannot allow the AC to blow cold air.
Inspect the vent for dirt blockage and clean it. You can use a vacuum hose here. And while at it, ensure the vent is well positioned to avoid any positional blockage.
7. Poor Insulation
If there are openings on the wall or around the windows or doors, they’ll allow warm air to leak on. Once that’s the case, you won’t feel the air conditioner blowing cold air.
Consider sealing any openings on the walls and around the windows and doors. It may also help to use thick curtains on the windows to avoid direct sunshine interference.
8. Collected Condensate
Sometimes due to poor drainage, water collects in the collection tank. Once that happens, the condensate creates a humid condition that prevents the AC from blowing cold air.
Consider draining out the accumulated condensate. But if you can’t do it, call an HVAC expert.
9. Low Refrigerant
Air conditioners have a liquid coolant, famously known as the refrigerant, that’s essential in cooling. Once the refrigerant level drops, mostly from leakage, the air conditioner senses that and automatically goes into self-shut mode. In that case, it’s unable to run or blow any cold air.
Refrigerant leakages are not easy to fix. It’s best you call an HVAC expert when that’s the case.
10. Failed Component
Lastly, your LG portable air conditioner might not be blowing cold air because of a failed component. The mentioned component could be any of these three:
- Compressor – If the compressor is not working, the air conditioner might turn on but won’t run. And if it doesn’t run, it won’t blow any air.
- Exhaust fan – The air conditioner may also turn on if the exhaust fan is damaged, but it won’t blow air. So, you also have to inspect the exhaust fan for damage.
- Thermostat – If the thermostat is faulty, it’ll be hard to set it, making it difficult for the AC to cool your space.
LG AC Not Cooling But Fan Is Running
It’s not an odd scenario for the fan to run but for the LG air conditioner not to blow cold air. That could happen due to a wrong setting, for example, a low-spin fan setting. If the fan is on a low spin, you may fail to notice it is spinning.
The other issue is that the air filter, condenser coils, or vent could be filthy; in that case, the filthiness interferes with airflow. In such a case, the fan may run, but the air conditioner won’t cool your space.
People Also Ask
1. How Do I Fix My LG Air Conditioner Not Cooling?
The first thing to do when your LG air conditioner won’t cool is to check its power supply, and if everything is okay with the power, reset the air conditioner. If the air conditioner doesn’t start cooling after resetting, check its setting and ensure it reads ‘Cool’ mode.
While at it, inspect the air filter, condenser coils, and vent for dirt blockage and clean them. Then move the unit away from any heat source and seal up any source of air leakage.
It may also help to inspect the exhaust fan, compressor, and thermostat for faults and replace any of them if they are defective. But if you can’t find any fault, have an expert check the unit for refrigerant leakage and fix it.
2. How Should I Make a Portable Air Conditioner Colder?
You can make your portable air conditioner colder using these steps:
- First, reset the air conditioner to fix any glitch issue
- Check the air filter, condenser coils, and vent for dirt-clogging and clean them
- Adjust the thermostat setting to ensure it’s reading a lower value than the room temperature
- Ensure the unit is set on ‘Cool’ mode
- Seal any spaces on the walls or around the windows and door which leak air
- Drain out any condensate that collects in the water tank
3. How Do I Deep Clean My LG Portable Air Conditioner?
You can deep clean your LG portable air conditioner by thoroughly washing the air filter with mild soap and warm water. You then need to use a condenser cleaner to clean filthy condenser coils, and if the vent is dirt-clogged, clean it too.
Concluding Thought On LG Portable Air Conditioner Not Blowing Cold
Above are the ten issues to check when your LG portable air conditioner fails to cool. First, check for the possibility of a wrong BTU rating or setting, inadequate clearance around the unit, or filthy coils or air filter.
If that’s not it, consider issues like vent blockage, poor insulation, and condensate accumulation. But once you rule out those, consider calling an expert to check the refrigerant and possibly replace the compressor, exhaust fan, or thermostat if any of the three AC components is defective.