Resolve the 61 error on an LG multi-split AC with this troubleshooting guide

Is your LG air conditioner displaying error code 61? Don’t worry — this is a problem that you can fix yourself without the need for a costly service call, and we’re here to help you through the troubleshooting process!

If you find out that you need any replacement parts for your LG air conditioner while you’re troubleshooting, you can enter your model number at AppliancePartsPros.com to order them. Most orders arrive in just two business days, and we have thousands of free guides to show you how to install your new parts.

Important: The troubleshooting information provided in this article may not apply to your specific appliance model. While we strive to offer helpful advice for DIY appliance repairs, variations in models and configurations can lead to differences in troubleshooting steps, error codes and part replacements. For the most accurate guidance, we strongly recommend consulting the technical sheet for your specific appliance model.

What does the 61 error mean?

Fault code 61 on an LG multi-split AC typically indicates that the outdoor unit’s condenser coil temperature is excessively high, usually above 149°F (65°C). This usually happens when there’s insufficient airflow over the condenser coil during the cooling mode operation.

What you need

• Multimeter
• Screwdrivers
• Fin comb
• Cleaning brush

Important: The specific tools required may vary depending on the model of your appliance and the type of fasteners used on it. Always consult the user manual or refer to any specific instructions provided by the manufacturer for the recommended tools for your appliance model.

Read more: Choosing An Air Conditioner: How Many BTUs Do I Need?  

Safety precautions

When working on any appliance, remember to keep safety first. Here are some tips to keep in mind:

• Always power off and unplug your appliance or switch off the circuit breaker before you attempt any maintenance or replacement work. This keeps you safe by eliminating any risk of electric shock.
• If the appliance has recently been used, give it plenty of time to cool down before working on it.
• Don’t test live voltage with a multimeter if you’re unfamiliar with how to prevent short-circuiting.
• Take your time while working to prevent accidents and personal injuries. Rushing is the enemy of precision.
• Work in a well-lit area so you can see and access appliance parts.
• Keep your workspace free of clutter and other obstacles. Keep children and pets away from the work area.
• Never work on internal parts with wet hands. Make sure the work area is completely dry.
• Check the user manual to see if there are specific installation or safety instructions related to your appliance or replacement part.
• Be gentle when handling or removing parts. Excessive force might damage the appliance or cause personal injury.
• Wear insulated work gloves to protect your hands from sharp metal parts and debris.
• When working with wires, avoid touching any exposed wires or terminals. If you need to touch a wire, use a non-conductive tool or wear insulating gloves to prevent electrical shock.
• Always take photos or make a note of wiring terminals or other connections before disconnecting them to make reassembly easier.
• Consider wearing safety glasses and/or a dust mask when working with chemicals, dust or a large amount of debris to prevent irritation or injury.

Read more: How to troubleshoot & fix common window air conditioner problems

How to troubleshoot the 61 error code

Follow these steps to find out what’s causing the 61 fault code and how you can fix it.

Step 1: Check for airflow

1. Disconnect the AC from the power supply.
2. Inspect the outdoor unit to make sure there aren’t any physical obstructions in front of the condenser coil. Remove any debris, leaves, or other materials that may be restricting the airflow through the condenser coil.
3. Make sure the air intake and discharge areas are clear and unobstructed.
4. Check that the outdoor unit is positioned with adequate clearance around it.

If there aren’t any apparent airflow issues, continue troubleshooting.

Step 2: Check the coil temperature

With the air conditioner running in cooling mode, use a digital thermometer to measure the temperature of the condenser coil. Make sure the coil temperature isn’t exceeding the manufacturer’s specified maximum temperature of 149°F.

If the coil temperature is significantly higher, it indicates there’s insufficient airflow over the coil.

If the coil temperature is good, move on to the next step.

Step 3: Check the condenser coil

• Visually check the condenser coil for any signs of damage, bent fins, or excessive dirt/debris buildup. If the coil is damaged, you’ll need to replace it.
• Use a soft brush or compressed air to gently clean the condenser coil and remove any accumulated dust or debris. Be careful not to damage the delicate coil fins during the cleaning process.
• Use a fin comb to straighten any bent fins.

Step 4: Check the fan motor

1. Check the outdoor fan motor to make sure it’s running properly and the fan blades are rotating freely.
2. With the unit off and disconnected from power, manually turn the fan blades to make sure they can spin without any binding or obstruction.

If the fan motor is damaged or not functioning correctly, it’ll need to be replaced.

Read more: How to Clean Your Air Conditioner the Easy Way 

More for you

Thank you for reading! We hope this guide helped you get your LG multi-split air conditioner working again.

If you have any other appliance repair needs or projects, don’t hesitate to explore our other troubleshooting guides and videos.

If you need replacement parts or some extra help with ordering them, grab your model number and head over to AppliancePartsPros.com, where you can chat with a pro, read our DIY blog and more.

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