5
LG
LG air conditioner error 5
Meaning
Communication failure from indoor unit to outdoor unit
Models
LS091HSV, LS121HSV
How the unit shows it
- No. of Times Indoor Unit LEDs Blink LED1 (Heating LED): 5X
Causes and how to check
- the cited manual page, and follow-up questions
No account needed to look up codes.
Model series: LS
Guides
- Communication error between indoor and outdoor unit: what to check, in which order
Communication (transmission) error codes usually come from the connecting wire, the supply or a board. The checks from easy to hard.