13
Problem
Indicator
Cause
Solution
Valve does not flush:
1.The red LED indicator in the sensor
blinks continuously when the user
steps within the sensor’s range.
Low battery.
Replace battery.
2. The red LED indicator in the sensor
does not blink when the user steps
within the sensor’s range.
1. Inappropriate sensor range.
Increase or decrease the sensor
range.
2. Battery is completely used up.
Replace battery.
3. The sensor is picking up reflec
-
tions from a mirror or another object.
Eliminate cause of reflections.
3. The red LED indicator in the sensor
blinks when the user steps within the
sensor’s range.
1. Connectors between the electro-
nic unit and the solenoid valve are
disconnected.
Connect the connectors of the electro-
nic unit to the solenoid valve.
2. Debris or dirt in the solenoid valve
clog up the bleeding hole.
Replace or clean the solenoid valve.
Unscrew the solenoid, pull out the
plunger and the spring from the
solenoid and clean them. When
placing the plunger and spring back,
please make sure the spring is in
vertical position.
3. The water supply pressure is
higher than 8 bars or pressure peaks
over 8 bars in the water supply
causes pressure to be trapped in the
flush valve.
Reduce the water supply pressure.
Continuous Flow:
1. The red LED indicator in the sensor
blinks when the user steps within the
sensor’s range.
1. Debris or dirt in the Flush Valve
clog up the piston or the orifice. The
piston doesn’t close.
Open the piston cover and clean the
piston, the orifice and body internally.
2. Debris or dirt in the solenoid valve.
The solenoid valve doesn’t close.
Replace or clean the solenoid valve.
Unscrew the solenoid, pull out the
plunger and the spring from the
solenoid and clean them. When
placing the plunger and spring back,
please make sure the spring is in
vertical position.
Low Discharge
1. The self cleaning needle came out
of the piston orifice or is displaced.
The orifice delivers more water than
usual pushing down the piston,
causing the piston to close faster
than normal.
Replace the piston.
2. The U-seal is torn or damaged
and doesn’t seal well enough.
Replace the U-seal.
3. Flow time setting is too short.
Increase the flow time.
4. The pressure is less than 3 bar or
pipe system diameter less than Ø1”
Increase the inlet pressure or change
the pipe diameter to Ø1”.
High Discharge
1. Debris or dirt in the Flush Valve
clog up the piston. Friction in the
piston movement causes the piston
to close slower than normal.
Open the piston cover and clean the
piston and body internally.
2. Dirt in the piston orifice prevents
enough water from going through
the orifice.
The reduced flow causes the piston
to close slower than normal.
Open the piston cover and clean the
piston and the orifice.
3. Flow time setting is too long.
Reduce the flow time setting.
Dripping
1. Debris or dirt in the piston seat.
Clean the piston seat.
2. Piston seal is torn or damaged.
3. Debris or dirt in the solenoid valve
orifice. The solenoid valve doesn’t
close properly.
Replace or clean the solenoid
valve.
Unscrew the solenoid, pull out the
plunger and the spring from the
solenoid and clean them. When
placing the plunger and spring back,
please make sure the spring is in
vertical position.
4. The plunger seal is torn or
damaged.
