ABNORMALITY SIGN ESTIMATION DEVICE FOR AIR CONDITIONER, ABNORMALITY SIGN ESTIMATION MODEL LEARNING DEVICE FOR AIR CONDITIONER, AND AIR CONDITIONER

An abnormality sign estimation model learning device estimates an abnormality sign degree, for each abnormality type, of an air conditioner provided with an outdoor unit, an indoor unit, and a remote controller. A communication circuit receives a communication frame transmitted between the outdoor unit, the indoor unit, and the remote controller. A communication history storage device stores the received communication frame. A learning data generator generates learning data by using the communication frame stored in communication history storage device. A model generator learns an estimation model for estimation of the abnormality sign degree, for each abnormality type, of the air conditioner by using the generated learning data.