Method for functional inspection of heating circuit of air conditioning apparatus of motor car, involves comparing temperature gradient that is determined from change of temperature value with minimum value using control device

摘要

The method involves measuring temperature of a heating circuit to provide a temperature value using a temperature sensor or vaporizer sensor (5) of an air conditioning apparatus (1). A heating circuit of a motor vehicle is heated, and a temperature gradient that is determined from the change of the temperature value is compared with a minimum value using a diagnose unit or a control device of a car. Time for reaching a pre-set temperature value is measured to determine the gradient, and a pre-determined measuring position of a cool air flap (6) is measured.