In addition to water damage, technical defects in household appliances can also cause fires. Whether a household appliance can be operated unattended therefore also depends on whether it is intended to be used properly. This is determined by the manufacturers of the devices. If household appliances are intended for unsupervised operation according to the manufacturer, they can in principle be operated unsupervised without this affecting the insurance cover. However, this does not rule out gross negligence: If the policyholder has clear indications of a possible accident (e.g. a wet spot on the floor, the smell of smoldering), he must act.