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How To Reset Your LG PTAC Unit: Step-By-Step Guide

How To Reset Your LG PTAC Unit: Step-By-Step Guide

The LG PTAC unit is a versatile appliance that functions as both a heater and an air conditioner, making it a valuable addition to any space. However, if you’re unfamiliar with this type of equipment, you might have questions about how to reset your LG Packaged Terminal Air Conditioner. To save you the trouble of researching, we have compiled a comprehensive guide on resetting your LG PTAC unit.

To begin, you can easily reset your LG PTAC unit using the remote control. Simply locate the “Reset” button on the remote and press it. This action should trigger a reset of the unit. If, however, the remote control reset doesn’t work, there are alternative methods you can try.

First, attempt to reset the unit by pressing the “Reset” button found on the power plug of the unit. If this doesn’t yield the desired results, you can also try pressing the “Reset” button on the unit’s control panel. Keep in mind that certain remote controls may only be able to reset the time settings on the unit. Therefore, it is crucial to check the circuit breaker and plug before manually resetting the unit through the control panel.

Now, let’s delve into the detailed steps for resetting an LG PTAC unit:

Step 1: Reset The Unit Using The Remote Control
PTAC units come equipped with a remote control that allows you to conveniently operate the unit from a short distance. The remote control typically features a display screen and various buttons with distinct functions. Look for the “Reset” button on the remote control and press it. Observe whether the unit restarts as a result of this action.

How To Reset Your LG PTAC Unit: Step-By-Step Guide

Step 2: Reset The Unit Manually
It’s important to note that not all remote controls are capable of performing a system reset on a PTAC unit. Some remotes’ “Reset” buttons are designed solely for resetting the time settings. Consequently, it becomes necessary to manually reset the unit.

To manually reset the LG PTAC unit, start by checking the circuit breaker to ensure it hasn’t tripped. If it has, simply turn it off and then back on again. Next, press the “Reset” button located on the power plug. Alternatively, you can unplug the unit for a minimum of 30 seconds before plugging it back in.

Lastly, locate the “Reset” button on the built-in control panel of your LG PTAC unit. Press this button and wait for the unit to reboot. It’s also advisable to inspect other components of the unit, such as the air filter, condenser coil, and thermostat, as these elements can sometimes contribute to the unit’s inefficiency.

Common Issues And Troubleshooting For LG PTAC Units

Air Filter Clogging
An air conditioner’s function includes filtering the air circulating within the room. Over time, the air filter can become clogged with dirt and dust particles. This obstructs proper airflow and prevents effective air filtration. To address this issue, unplug the unit and remove the front cover to access the air filter. If you notice a buildup of grayish particles on the filter, it’s crucial to clean it to eliminate the clogs. One method involves using a vacuum cleaner with a smaller tube attachment to suction away the dirt buildup. It’s advisable to clean the filter at least once a month and have the entire unit cleaned annually to extend its lifespan.

Blockage In Condenser Coils
The condenser coils play a vital role in removing heat from the refrigerant after it has been pressurized by the compressor. If dirt accumulates on the condenser coils, the unit’s efficiency will be compromised. To resolve this, use a coil brush along with a mixture of water and detergent to gently remove the dirt buildup from the coils. Thoroughly rinse the coils with water. Regularly checking and cleaning the condenser coils will prevent efficiency issues and system malfunctions.

Defective Compressor
The compressor is responsible for circulating the refrigerant under specific pressure from the evaporator to the condenser coils. A faulty compressor can render the unit inoperable. If you suspect a defective compressor, it’s best to seek the assistance of a technician who specializes in PTAC units. Only professionals should handle compressor replacement to avoid exacerbating the issue.

Improperly Set Thermostat
The thermostat controls the temperature settings of the unit and compares them to the current room temperature. For PTAC units, which function as both heaters and air conditioners, it’s important to ensure the unit is set to the appropriate mode, such as “Cool Mode” rather than “Heat Mode.” Adjusting the temperature settings and verifying the functionality of the thermostat using a multimeter can help identify any issues. If a faulty thermostat is suspected, it’s recommended to replace it.

How To Reset Your LG PTAC Unit: Step-By-Step Guide

Ice Buildup
PTAC units commonly experience ice buildup, often due to a faulty fan or thermostat. When ice accumulates, the unit’s cooling capability is hindered. This issue should be addressed promptly to prevent further damage. Engaging a technician to inspect the unit is advisable. Alternatively, you can inspect the thermostat and internal fan yourself to determine if repairs or replacements are necessary.

Understanding The Distinctions: PTAC Vs. Mini-Split

While both PTAC units and mini-splits offer heating and cooling functions, they are distinct in several ways:

Installation Requirements
PTAC units necessitate a larger wall opening for proper installation, whereas mini-splits only require a small opening to accommodate refrigerant passage between the outdoor and indoor units.

How To Reset Your LG PTAC Unit: Step-By-Step Guide

Ventilation Capability
Mini-splits do not offer ventilation features, whereas PTAC units provide heating, cooling, and ventilation.

Energy Efficiency
Mini-splits generally exhibit higher energy efficiency ratios (EER) of above 15, whereas PTAC units typically have an EER of around 12.

Outdoor Unit
PTAC units do not require an outdoor unit, while mini-splits consist of an outdoor compressor unit and an indoor unit.

New models of PTAC units are generally more affordable compared to mini-split systems.

Installation Requirements
PTAC units do not require professional HVAC technicians for installation, whereas mini-splits often require professional installation.

Differentiating PTAC Units From Centralized AC Systems

A PTAC unit and a centralized air conditioning system are not the same. While a centralized AC system can cool an entire house by operating from a central air conditioner and distributing cold air through air vents and ducts, a PTAC unit is designed to function solely in the room where it is installed.

PTAC units are commonly found in hotels and condominiums that lack access to centralized AC systems, while centralized AC systems are more prevalent in households.

Unlike centralized AC systems that solely provide cooling, PTAC units serve as both air conditioners and heat pumps.


PTAC units are an excellent choice for spaces where cooling, heating, and ventilation capabilities are desired. Resetting your PTAC unit is a straightforward process that can be easily accomplished without the need for an HVAC technician, as long as you follow the proper instructions. By understanding and addressing common issues, such as clogged filters, condenser coil blockages, defective compressors, thermostat misconfigurations, and ice buildup, you can ensure optimal performance and longevity of your LG PTAC unit.

How To Reset Your LG PTAC Unit: Step-By-Step Guide

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