LG Aircon Blinking Light Patterns

Learn what common LG blink patterns mean, what typically causes them, and whether they need urgent attention.

LG blink guide

This is a guidance table, not a model-exact diagnosis. Pattern meaning can vary by controller and series. Use this page to narrow next steps, then verify with model sticker details.

Safety warning

Stop using the unit and contact a technician if the breaker trips repeatedly, you smell burning, see sparks, hear loud electrical buzzing, or water is leaking from places it normally should not.

Search blinking light patterns

Blink count: 2

Top LED blinks 2 times and bottom LED blinks 1 time in a repeating cycle

Inverter DC overcurrent condition · Compressor electrical loading fault · Drive/control board abnormality

Blink count: Persistent or continuous

After operation stops, green/blue lamp blinks periodically for about 5 to 15 minutes with weak airflow

Auto-drying function enabled · Post-stop moisture removal routine

Blink count: Persistent or continuous

On supported cassette models, yellow lamp blinks periodically after stop until auto-drying ends

Auto-drying moisture-removal sequence · Post-operation fan purge logic

Blink count: Persistent or continuous

Timer light blinks while top/bottom unit LEDs blink in count combinations to indicate fault type

Model-specific fault signalling active · Indoor/outdoor or compressor-side abnormality · Stored protective error condition

Blink count: Persistent or continuous

Timer/error indication appears with P2 or FL drain-pan-full fault behavior

Drain pan full/water level trigger · Drain path obstruction · Water removal issue causing protective stop

Not sure how to read your LG blink pattern?

Send a short blink video and your model sticker. We'll advise the next step before any work is recommended.

Chat about LG blinking lights

Other diagnostic tools

If your unit shows an error code or a different symptom instead, try a different starting point.

Error codes

Display showing a code? Look up what it means for your brand.

Aircon problems

Diagnose a specific symptom like no cooling, water leak, or noise.

LG brand hub

Guides, resources, and model info for LG aircon.

Back to blinking light guides