What F1, F2, F3 (Room Air Conditioner Fan Speed - Not a Fault) Means
On LG's simpler room (window, portable, and similar) air conditioners, F1, F2, and F3 are not error codes at all - LG's dedicated article is explicit that these simply indicate the current fan speed, adjustable during operation with the fan speed button: F1 is Weak, F2 is Mid, and F3 is Strong. This is a completely different meaning from the F2 and F3 that appear within LG's larger "System" air conditioner's grouped sensor-fault codes covered elsewhere in this file - the same characters, two unrelated LG documents, describing two different kinds of air conditioners.
Common Causes of F1, F2, F3 (Room Air Conditioner Fan Speed - Not a Fault)
- Owner (or remote) pressed the fan speed button, cycling through F1/F2/F3
🔧 One Safe Check You Can Try
If you want to change fan speed, press the fan speed button during operation to cycle through Weak (F1), Mid (F2), and Strong (F3) - there's nothing to repair.
⚠ Why You Shouldn't Go Further Than That
- No troubleshooting is needed - confusing this fan-speed indicator with a fault code on a different LG air conditioner product line is exactly the kind of mix-up that sends people to call a technician over nothing.
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.