Damn, all of our 4 LG split type inverter units have a defective part. The latest one is my seldom used unit which turns off after 3 seconds and light blinks. Looks like a thermostat defect. Other defects were broken fan motor, broken swing motor, and an unrecalled part replaced under warranty.
Both our non-inverter Kolin units had their boards replaced at 5k each when they were only 2 years old!

Will be switching to Daikin or Hitachi in the future