Domestic appliances of the generic type are known. It is thus necessary to detect the door lock position for a domestic appliance in order to guarantee safe operation of the domestic appliance. For example the recirculation pump is stopped in a dishwasher if the door is no longer closed. This is designed to avoid burn injuries caused by water being sprayed out.
It is known that the door lock position can be detected using a reed switch. The reed switch comprises magnetizable switching contacts arranged in a protected enclosure which are moved by an external permanent magnet into a closed or an open position. The permanent magnet is arranged on a movable closure part of the door lock. If the door lock is now opened, the reed switch moves out of the effective range of the permanent magnet. This either opens or closes the reed switch, depending on the circuitry, and a change in the circuit is able to be detected by a supervision circuit.
The disadvantage of these types of reed switch is that malfunctions resulting from a short circuit or an interruption will be interpreted and evaluated as normal operating states and thereby not recognized.
The underlying object of the invention is thus to provide a domestic appliance with self-diagnosis capabilities.
The invention is based on a domestic appliance, especially a water-conducting domestic appliance such as a domestic dishwasher for example, having at least one door with which a treatment area of the domestic appliance can be opened or closed. Furthermore door position detection means are provided for detecting an open or closed door position.