Protection method and device for preventing wrong wiring, air conditioner and storage medium

The invention discloses a protection method and device for preventing wrong wiring, an air conditioner and a storage medium, and relates to the technical field of power electronics. The method comprises the following steps: sending a first level signal and confirming whether a receiving pin detects a pulse signal or not; if the receiving pin detects the pulse signal, determining the number of times of detecting the pulse signal within a preset time; and if it is detected that the number of times of the pulse signals is within the preset number of times range, closing of the outdoor unit power supply relay is stopped. The mainboard can be prevented from being burnt out due to wrong wiring under the condition that a protection circuit is not arranged, and the cost is reduced. 本发明公开了一种防接错线保护方法、装置、空调器及存储介质，其涉及电力电子技术领域。其中，所述方法包括：发送第一电平信号并确认接收引脚是否检测到脉冲信号；若所述接收引脚检测到所述脉冲信号，则在预设时间内确认检测到所述脉冲信号的次数；若检测到所述脉冲信号的次数在预设次数范围内，则停止吸合外机供电继电器。本发明可以在不设置保护电路的情况下防止主板因错接线而烧毁，降低了成本。