What CH32, CH33, CH36, CH38, F4 Means
CH32, CH33, CH36, CH38, and F4 together point to a refrigerant or compressor-related problem, per LG's combined troubleshooting article, which may result from a temporary power issue or a malfunction in the outdoor unit's compressor, drive, protection circuit, or internal electronic components.
Common Causes of CH32, CH33, CH36, CH38, F4
- Temporary power issue
- Outdoor unit compressor malfunction
- Compressor drive or protection circuit fault
- Refrigerant leak, particularly if the fault appeared shortly after installation
🔧 One Safe Check You Can Try
If the error appears shortly after installation, contact your installer, since this group can point to a refrigerant leak introduced during setup; otherwise follow the standard reset and, if it returns, stop using the unit rather than continuing to run it on a possible refrigerant fault.
⚠ Why You Shouldn't Go Further Than That
- Refrigerant system work requires EPA-certified handling - this isn't a DIY part, and LG's own warning against disassembling the unit applies with particular force to a possible refrigerant-related fault.
- If the error appeared shortly after installation, LG specifically points to the installer as the first call, since a refrigerant leak from an improperly sealed connection during setup is a plausible cause.
- Continuing to run a system with a refrigerant or compressor fault can cause the compressor further damage, turning a repairable leak into a full compressor replacement.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.