31
LG
LG air conditioner error 31
Meaning
Current to the current transformer (CT) thermistor is too low
Models
LS091HSV, LS121HSV
How the unit shows it
- No. of Times Indoor Unit LEDs Blink LED1 (Heating LED): 3X
- No. of Times Indoor Unit LEDs Blink LED2 (Cooling LED): 1X
- No. of Times Outdoor Unit PCB LEDs Blink LED1 (Green): 3X
- No. of Times Outdoor Unit PCB LEDs Blink LED2 (Red): 1X
Causes and how to check
- the cited manual page, and follow-up questions
No account needed to look up codes.
Model series: LS
Guides
- Checking an air conditioner temperature sensor (thermistor)
How to check the room, coil or discharge sensor when the unit reports a sensor error: measure its resistance and compare with the exact model's table.