LG · Air conditioners
LG Split Air Conditioner CH38: A refrigerant-system warning was detected
THE SHORT ANSWER
A refrigerant-system warning was detected
CH38 indicates a refrigerant-system warning was detected. Arrange service; this is not a user repair instruction.
Record whether the system was recently installed or moved.
Keep covers fitted. Refrigerant, wiring and fan repairs require a qualified technician.
WHAT YOU MAY NOTICE
Symptoms to record
- The display shows CH38.
WORK THROUGH THE BASICS
Safe troubleshooting checks
Use the checkboxes to keep track as you read. Stop at any warning or step that does not match your appliance.
Contact the installer for a new-installation warning. Have a persistent CH38 diagnosed by a qualified service technician.
What to noteUse the result to decide whether the issue is resolved or needs service.
THE DETAILS MATTER
Scope & troubleshooting notes
Interpret this code in context
The warning calls for diagnosis of the system. It does not establish a refrigerant quantity or authorize topping up a sealed circuit.
YOUR NEXT DECISION
When to stop and get help
Contact LG service if this indication returns or the appliance cannot resume normal operation.
THE EVIDENCE
Sources & verification
Our explanations are editorial summaries of the documentation below. They do not replace the instructions for your exact appliance.
- LG Air Conditioner — Communication and Installation Codes
LG USA · Manufacturer support · Checked
Error-code troubleshooting; relevant display identified in the article — LG split air conditioners; installation/test-run and normal-use paths differ.