the invention relates to a pump assembly with a pump and with an electrical drive motor , as well as an electronic control device , wherein the electronic control device comprises a rotation direction recognition module for recognizing the correct rotation direction of the drive motor and of the pump , the rotation direction recognition module comprising means for detecting at least one performance characteristic value of the pump assembly , and being designed in a manner such that on rotation of the drive motor , the rotation direction recognition module detects at least one performance characteristic value and determines the correct rotation direction by way of evaluation of the performance characteristic value .