LG Portable Air Conditioner Not Blowing Cold

LG Portable Air Conditioner Not Blowing Cold. Having your LG portable air conditioner go down during the hot months is an unfortunate event that needs to be addressed quickly.

Fortunately, there are a few things that you can do to get your portable air conditioner back up and running.

Depending on how your indoor space feels, you may want to try one or more of the techniques listed here and see whether or not they make a difference for you, If cold.

If your LG portable unit is blowing out cold (or warm) air but nothing seems to be getting cool, then this could be because of several reasons.

LG Portable Air Conditioner Not Blowing Cold

lg portable air conditioner not blowing cold

If the air conditioner fails to start after you press the power button: unplug the unit and leave it unplugged for at least 10 seconds; plug the air conditioner back in and wait until the indicator light turns amber. Then press the power button to turn on your air conditioner.

Here are some instructions on fixing the LG portable air conditioner when it isn’t blowing cold.

Thermistor Problem

If the air conditioner’s compressor isn’t working at all, but you’ve inspected the filter and found it not to be damaged or clogged, then the thermistor might be faulty.

It is a sensor that measures the temperature of the air with which it comes in contact and then sends a signal to either turn the compressor on or off.

The device is normally positioned near a furnace’s evaporator coil. If the thermistor is defective, then it will not send out any signal for the main control board to turn on the compressor’s circuit.

Replace the thermistor if there are signs of damage or corrosion around it.

Fan Motor And Fan Faults

fan motor and fan faults


If your window air conditioner is not blowing cold air, the problem could be one of two things: If you notice the fan running but aren’t getting much airflow over the coils the most likely issue then it’s probably.

The coils in your evaporator are frosted and restricting airflow causing low air pressure which can result in air escaping out of vents throughout the house.

If on the other hand, you notice that there is no motor movement and no spinning blades, then you might have a faulty motor or bad wiring.

To test if it’s frozen try lifting deflector fins up with a tool to allow some warm air in and see if that helps thaw it out.

Another thing to check will be whether the power cord coming from the outside unit receives any power from the switch.

Faulty Air Filter

air filter

When there is a clog in the air filter, air cannot flow properly through the air conditioning unit, which greatly reduces the cooling effect of the AC unit.

In addition to that, if the air filter is so clogged it assembles moisture inside of it then this may cause your evaporator coils to frost over.

In conclusion, when you have a clogged air filter you should remove it and replace it with one that doesn’t have anything obstructing its effectiveness.

Run Capacitor Failure

The run capacitor is the link between the compressor and the motor. The capacitor helps the transfer of power by releasing electrical energy that keeps the motor operating.

It would not operate if the capacitor burns out. To determine if it is damaged, use a multimeter to test whether or not it has continuity with another capacitor that is in good working order.

If there are no signs of continuity ensure that another one has been changed before considering further action.

Dirty Condenser Coils

Condenser coils remove the excess heat a compressor generates as it functions by carrying and circulating coolant (fluid with low volatility quickly evaporates without noticeable odor) from within and remixing it.

They are located in air-cooled air conditioner systems external to everything else inside the machine, lying along the bottom of the unit.

A specific number of tubes coming together in a lattice such that flowing through the system is made more efficient.

Condenser coils become clogged with dirt and bacteria over time, reducing their drainage capacity. They may need to be cleaned for better results.

Thermostat Fault

The thermostat is an electronic component that monitors the temperature of a room.

When the temperature rises accompanied by any other detrimental factors, the thermostat switches on an air conditioning unit in reaction to this thermal change.

One should be careful when testing its functionality as damage may occur to other home appliances if you’re not careful.

It’s advisable that prior to replacing it you first verify its condition through measurements by using a measuring device.

Such procedures can be done in both residential and commercial properties and help avoid unnecessary spending on faulty components, which are hard to tell apart from fully-functional parts simply by looking at them visually.

Defective Control Board

Voltage is controlled by the board going to the compressor and the fan motor If the board fails, some parts in your refrigerator may not work properly or may not even start working at all.

Lots of people think it’s an easy process to replace these boards, but they often get it wrong because most commonly defective components can be a lot easier and less hassle to replace than these tricky control boards.

LG Portable Air Conditioner Not Blowing Cold

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