Air conditioner outdoor unit position detection method and device and air conditioner system

The invention discloses an air conditioner outdoor unit position detection method and device and an air conditioner system. The method comprises the steps that the working state of an air conditioner outdoor unit and the distance change value of the air conditioner outdoor unit relative to a fixed reference object are obtained; when the air conditioner outdoor unit is in a standby state, the distance change value is compared with a preset distance change value D1, and when the distance change value is larger than the preset distance change value D1, an alarm is given out for reminding; when the air conditioner outdoor unit is in the non-standby state, the distance change value is compared with a preset distance change value D2, when the distance change value is larger than the preset distance change value D2, an alarm is given out, and the preset distance change value D1 is smaller than the preset distance change value D2. According to the method, whether the air conditioner outdoor unit moves or not under th