Installation Guide

16
TROUBLESHOOTING
No water comes
from the flush
valve
Water does not
stop flowing
The discharge
quantity is too small
The discharge
quantity is too much
The flow rate is too
low
A red light in the
sensor window blinks
The main valve in water supply
line or the control stop is shut off
The connector is not
connected
The surface of the glass in front
of the infrared sensor is dirty
The glass is broken
There is a reflective surface in
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 clogged
The small hole in the piston is
clogged. (not for TEU*UA(R)(X))
The sealing area of the piston is
dirty. (not for TEU*UA(R)(X))
The sealing area of the solenoid
diaphragm is dirty.
The screw of the control stop or
the screw of the piston valve are
not adjusted properly
Water supply pressure is too low.
(below rated minimum pressure)
The control stop is not open enough.
The flow rate is too
high
The control stop is not adjusted
properly.
The battery is weak.
Open the main valve or the
control stop
Connect the wire
Clean the surface of the
glass
Contact distributor for
replacement
Remove the reflective
surface from the 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
Adjust the discharge quantity
by the screw of the control
stop and the screw of the
piston valve
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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-
-
-
19
18
18
17
18
17
-
17
Piston U-packing damaged.
(not for TEU*UA(R)(X))
Inspect & replace if
necessary
18
-
18
18
18
Ref.Page Suggested ActionPossible Cause
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 Support at [phone].
Problem
ENGLISH