Single / Multi-Split Air Conditioner Error Codes

Note Single/Multi-Split air conditioner error codes in NORTH AMERICA are identified by blinking LED lights on the unit whereas for everywhere else around the globe, error codes are displayed in actual numbers. Although a good number of products share similar error codes (not all), they get displayed differently on the head unit. For example, a Middle-Eastern air conditioner displaying the number 38 in the lower right corner signifies refrigerant is low and the unit ceased operation to protect itself. The air conditioner will require a repair service. Please contact your LG subsidiary support team for assistance.

How to check error code Try this

Does CH53 occur immediately after installing a new product, or installing a used product at other place?

CH53 code is a function detecting abnormal communication between the indoor unit and the outdoor unit of an inverter air-conditioner.
If it occurs right after the product is installed, then ask the installation technician to check if the communication cables are wired properly with no misconnections?

Does CH53 occur during running the product, not immediately after installing?

An error code that occurs in the product may be a temporary error due to unstable electricity supply or other electrical factors. Turn the power off or trip the circuit breaker for the product, and then reset the breaker about 5 minutes later.

If same symptom persists after power reset, have it checked by a service technician.

Note Customers who have inadvertently landed here seeking troubleshooting tips to resolve a CH07 error code that appeared in the window panel of their thermostat device need to jump over to this article “CH07 error code” link.