Why Does My LG Air Conditioner Keep Turning Off?

Why Does My LG Air Conditioner Keep Turning Off?

Is your LG air conditioner constantly shutting down unexpectedly? This frustrating issue can leave you uncomfortable, especially during hot weather. While LG units are known for their reliability, several common problems can cause them to turn off prematurely. Let's explore some potential causes and solutions to help you restore consistent cooling to your home.

A woman looks at her wall mounted thermostat

Thermostat Issues

Your thermostat serves as the command center for your air conditioning system. If it's malfunctioning or incorrectly calibrated, it may signal your LG unit to shut off prematurely. Check if your thermostat is displaying the correct temperature and that it's set to "cool" mode. Replace the batteries if needed, and ensure it's not placed near heat sources that could affect its readings. If problems persist after these basic checks, the thermostat itself might need replacement or professional calibration from our experienced technicians at J&M Air Conditioning and Heating.

Three air filters used for AC units

Dirty Air Filters

One of the most common reasons for an LG air conditioner to shut down is restricted airflow due to clogged filters. When air filters become dirty, your system works harder to circulate air, potentially causing it to overheat and trigger an automatic shutdown. Check your filters monthly and clean or replace them as needed – typically every 1-3 months depending on usage and environmental factors. This simple maintenance step can prevent numerous cooling problems and improve your system's efficiency.

Man sitting on a couch feeling hot and touching his face

Refrigerant Leaks

Low refrigerant levels from a leak can cause your LG unit to cycle on and off frequently. When refrigerant is insufficient, your system can't properly cool your home, leading to overheating and automatic shutdowns. Signs of a refrigerant leak include hissing sounds, ice formation on the evaporator coils, and decreased cooling performance. Refrigerant issues require professional attention – our NATE-certified technicians at J&M can safely detect and repair leaks and recharge your system to manufacturer specifications.

HVAC tech working on electrical parts

Electrical Problems

Electrical issues, including faulty wiring, tripped circuit breakers, or damaged capacitors can all cause your LG air conditioner to turn off unexpectedly. Check your circuit breaker to ensure it hasn't tripped, and look for any visible damage to wiring near your unit. However, for safety reasons, most electrical air conditioning repairs should be handled by qualified professionals rather than attempted as DIY projects.

Keep Your Cool with Professional Help

While these troubleshooting tips may help identify the cause of your LG air conditioner's shutdown problems, complex issues often require professional diagnosis and repair. At J&M Air Conditioning and Heating, our factory-trained technicians have been serving the San Jacinto area since 1967 with expert air conditioning repair services for all major brands, including LG.

Don't let an unreliable air conditioner disrupt your comfort. Contact J&M Air Conditioning and Heating at (951) 525-1003 to schedule service today and enjoy the peace of mind that comes with our experienced, reliable repair solutions.

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