an air conditioner control device is applied to an air conditioner of an automotive vehicle equipped with an automatic transmission . the air conditioner control device controls the on - off switching operation of a compressor of the air conditioner . the control device turns off the operation of the compressor when a signal indicative of accelerating state of an automotive vehicle from a transmission controller is received . further , the control device restarts the operation of the compressor when the off - time of the compressor becomes larger than a first predetermined time and when a second predetermined time has elapsed form a shifting judgment in the automatic transmission . therefore , the operation of the air conditioner is stopped during an acceleration of the automotive vehicle and securely restarred after the acceleration .