How to Fix LG Error Code CH05? A Complete Guide Here

Read on for step-by-step instructions on, how to fix LG Error Code CH05, we have also provided the causes for this LG Error Code CH05 in the article below.

by Sabareeswaran G | Updated Apr 21, 2023

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What is CH05 Error in LG AC?

The CH05 error code on an LG air conditioner indicates a communication error between the indoor and outdoor units. This error can be caused by various reasons such as incorrect wiring, a faulty control board, or a malfunctioning sensor. If you encounter the CH05 error code on your LG air conditioner, you should first try to reset the unit by turning off the power supply for a few minutes and then turning it back on.

If the error persists, you should consult the user manual for troubleshooting instructions or contact an authorized LG technician for assistance. It is important to note that only licensed HVAC technicians with experience working with air conditioning systems should attempt to diagnose and repair the issue. Improper repairs may result in further damage or pose a safety hazard.

How to Fix LG Error Code CH05?

The error code CH05 on an LG air conditioner typically indicates a communication error between the indoor and outdoor units. Here are some steps you can take to try and fix the issue

  • Turn off the air conditioner and unplug it from the power source.

  • Check the wiring connections between the indoor and outdoor units to make sure they are secure and free of damage.

  • Clean the air filters and remove any debris from the outdoor unit to ensure proper airflow.

  • Wait for about 30 minutes to allow the unit to reset.

  • Plug the air conditioner back in and turn it on.

If the error code persists after trying these steps, it may be necessary to contact a professional technician to diagnose and repair the issue.

Cause of CH05 Error Code in LG

The CH05 error code on an LG air conditioner indicates a communication error between the indoor and outdoor units. The most common causes of this error code are

Incorrect wiring: If the wiring between the indoor and outdoor units is incorrect or damaged, it can cause a communication error and trigger the CH05 error code.

Faulty control board: If the control board of the indoor or outdoor unit is malfunctioning or damaged, it can also cause a communication error and trigger the CH05 error code.

Malfunctioning sensor: If the temperature sensor or other sensors in the indoor or outdoor unit are not functioning properly, they may send incorrect information to the control board, resulting in a communication error and the CH05 error code.

Power failure or surge: If there has been a power failure or surge, it may cause damage to the control board or other components, resulting in a communication error and the CH05 error code.

If you encounter the CH05 error code on your LG air conditioner, you should consult the user manual for troubleshooting instructions or contact an authorized LG technician for assistance.

Error CH05 LG Inverter

The LG inverter error code CH05 indicates a communication error between the indoor and outdoor units of the air conditioning system. This error may be caused by a variety of issues, including wiring problems, faulty sensors, or a malfunctioning control board.

It's important to note that air conditioning systems are complex, and it's not recommended to attempt any repairs yourself unless you have experience working with these systems. It's best to call a licensed HVAC technician to diagnose and repair the issue. They have the necessary tools and expertise to safely and effectively repair your air conditioning system.

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How to Fix LG Error Code CH05 - FAQs

1. What is CH05 Error in LG AC?  

The CH05 error code on an LG air conditioner indicates a communication error between the indoor and outdoor units.

2. How do I reset the CH error on my LG air conditioner?  

Unplug the dehumidifier for 20 seconds to reset the unit.

 

3. What does CH 07 mean on LG air conditioner?

Inverter ac current abnormal.

4. How do I fix CH 38 error on my LG air conditioner?  

Unplug the power cord or shut off the circuit breaker and turn the power on after 5 minutes.