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Problem
The main valve in water supply
line or the control stop is shut off
One or more cables not connected
The surface of the glass in front of
the infrared sensor is dirty
No water
The glass is broken
comes from
the Flush
There is a reflective surface in
Valve
front of the sensor
The infrared sensor or the solenoid
is out of order
The small holes in the solenoid
diaphragm are clogged
Hydropower generator is clogged
The small hole in the piston is
clogged
The sealing area of the piston is
Water does not
dirty
stop flowing
The sealing area of the solenoid
diaphragm is dirty
Piston u-packing is damaged
The discharge
volume is too small
The screw of the control stop is not
adjusted properly
The discharge
volume is too much
Water supply pressure is too low
(below rated minimum pressure)
The flow rate is
too low
The control stop is not open
enough
The flow rate
The control stop is not adjusted
is too high
properly
A red light in
The battery is weak
the sensor
window blinks
NOTE: Do not dismantle parts of the Flush Valve which are not specified in the
troubleshooting guide.
If you need further assistance, please call TOTO Tech Services at (888) 295-8134.
TROUBLESHOOTING
Possible Cause
- 12 -
Suggested Action
Open the main valve or the
control stop
Check all cable connections
Clean the surface of the glass
Contact distributor for replacement
Remove the reflective surface in
front of sensor
Contact distributor for replacement
Clean the small hole in the
diaphragm and filter
Service hydropower generator
Clean the small hole in the piston
Clean the sealing area of the
piston
Clean the sealing area of the
diaphragm and filter
Inspect & replace if necessary
Adjust the discharge quantity by
the screw of the control stop
Consult with a plumbing
contractor
Adjust the control stop properly
Adjust the control stop properly
Check voltage with multimeter, if
below 2.6 V, contact TOTO for
replacement battery
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