C1 Faucet collections · Installation | 289 M2-E Installation, use and maintenance 4. CAUSE S O TION F A FAULTY OPERA Problem Possible cause Solution An object is blocking the detection eld Check that there are no objects in the eld of detection. Hands are placed outside detection range Place hands in front of detection window within adjusted detection range Water does not Detection window is not completely clean Check that the detection window is clean come out Regulating cocks closed Check that the regulating cocks are open No water ow Check that mains water is available Electric supply failure Check that batteries are in good condition and are tted correctly or power supply properly connected Detection window is not completely clean Check that the detection window is clean Involuntary shut Detection range of sensor system set too high Reduce detection range off or late shut- for local conditions ting off of tap Local conditions are not suitable for use of This tap should not be tted in places where sunlight can infrared detection faucet fall directly on the detection window Erratic and alea- Intermitent electric supply Check that electric supply connection is correct and that tory behavior it is not connected to the illumination switch