What each LG code means — and what to do next. Stuck? AAA Comfort Air fixes LG systems across Central NJ, often same-day.
LG ductless mini-splits are efficient and quiet, but like any system they occasionally act up. When they do, the indoor unit signals the problem so it can be pinpointed quickly — and AAA Comfort Air services LG systems across Central NJ.
LG units show a “CH” (check) code such as CH01 or CH05 on the display, or by blinking the indoor LED. The indicator is a “CH” code on the display or blinking indoor LED.
| Code | What it means | What to do |
|---|---|---|
| CH01 | Indoor pipe/air sensor open or short | Call us |
| CH05 | Indoor–outdoor communication error | Wiring/power — call us |
| CH38 | Electrical fault or low refrigerant | Reset once; if it persists, call us |
⚠️ Codes can vary by model and control-board revision — always confirm against the label inside your unit’s access panel. For any gas, electrical, or refrigerant fault, call a licensed technician.
LG units show a “CH” (check) code such as CH01 or CH05 on the display, or by blinking the indoor LED.
You can try one power cycle at the breaker to clear a one-time fault. But if the same code returns, it’s a real fault — repeatedly resetting a gas or electrical issue can be unsafe. Call AAA Comfort Air at 609-665-3022.
AAA Comfort Air installs and repairs LG systems across Cream Ridge and Central New Jersey, with same-day and 24/7 emergency service. Call 609-665-3022.
Book online or call your local LG HVAC team — same-day & 24/7 emergency service.
