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8. Frequently asked questions
No water from tap
Water flow diminishes
Continuous flow of water or dripping from the tap
The sensor is flashing red
once a second
Low battery. Change batteries.
The sensor is not flashing
at all when hands are in
sensing range
No power. Change batteries if battery powered. Ensure power is
switched on and is reaching the tap. Check all electrical connections.
The sensor is flashing
green once a second when
hands are in sensing range
but there is no water
Water supply. Ensure water supply has been turned on and there is
good working pressure. Minimum dynamic pressure 0.5 bar.
Filter blockage
Internal valve
Check filter in flexible hose
External valve
Check filter in inlet to solenoid valve
The sensor is covered
Anti-vandal mode has been triggered. The object/debris needs to be
removed and the tap will resume normal functionality.
The sensor is not flashing
at all when hands are in
sensing range
No power. The power has failed whilst the solenoid valve is open.
Change batteries if battery powered. Ensure power is switched on and
is reaching the tap check all electrical connections.
Water is flowing when
no user is present
Water supply. Ensure water pressure is not above maximum dynamic
pressure of 6 bar or below minimum dynamic pressure of 0.5 bar.
Internal valve
Debris or scale in diaphragm/solenoid. Contact Cistermiser Technical
Department.
External valve
Ensure the arrow on the valve is pointing in the direction of water flow.
Debris or scale in the diaphragm: isolate water supply to the valve and
remove wires attached to the solenoid.
Undo the 4x screws and remove. This will give you access to the
diaphragm (note orientation of diaphragm when reinstalling), flush under
cold water and visually inspect. Re-install.
Diaphragm has been damaged by debris. Carry out procedure for
‘Debris or scale in diaphragm’, visually inspect then call Cistermiser for
further instructions.
The sensor is flashing
green once a second when
hands are in sensing range
Filter or aerator is blocked with scale or debris. Remove aerator
tap using key supplied, clean and reinstall. Check filters prior to the
aerator at the TMV. For internal valve taps, check filter within the flexible
connector. For external valve taps, check filter in inlet to solenoid.
