Abstract: The invention provides a method for evaluating the self-diagnostic system of a controller in a motor vehicle having a control panel with a push-button switch with automatic return, and additional input elements and having a signalling element which is suitable for emitting a flashing code. In order to emit a structured flashing code of fault numbers, the range of possible faults which can be diagnosed is divided into fault classes, the faults within a fault class being assigned fault numbers which can be emitted, separated on the basis of fault classes, by flashing code. A specific fault class is selected by the operator by setting the input elements to a specific position combination which is assigned to the fault class, and operation of the push-button switch (for example, the recirculation push-button in the case of a heating controller).

Abstract: A method for controlling the temperature of an interior, particularly for a motor vehicle immediately sets the desired temperature of the inflowing medium by way of PI control in a starting phase only if the initial interior-temperature error values are small. With larger initial control imbalances, an offset desired temperature for the medium acting thermally on the interior is first of all set such that the interior-temperature error is counteracted to the maximum extent by the inner control loop. The range of small interior-temperature errors is thus regained as rapidly as possible, after which PI control is carried out.

Abstract: A method and device is provided for regulating or controlling the temperature of an interior, especially for a motor vehicle. An interior temperature regulation mode is provided if an interior temperature sensor and a blowing-out temperature sensor have been connected such that they can operate. A blowing-out temperature regulation mode is provided if only the blowing-out temperature sensor has been connected such that it can operate. Or, a reversionary control mode is provided if no temperature sensor which can operate is present, for which purpose a control and regulating device is correspondingly configured. The control and regulating device can be used for various types of vehicles. A blowing-out temperature regulation mode is also implemented if an open roof is identified in the case of a convertible vehicle.