Install Instructions

FV669 Rev. D 4/14/2020
Page 12
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Problem Indicator Cause Corrective Action
Valve is ushing too long or
not shutting o󰀨.
High water delivery or
continuous ow.
By-pass orice is plugged or partially
plugged.
Examine by-pass orice and clean if
necessary being certain not to en-
large orice opening. (See Diaphragm
Replacement and Cleaning Section for
cleaning instruction)
Water splashes out of xture.
Water splashes onto oor
during ush cycle.
Supply volume is too high. Slowly close the control stop to lower
water pressure.
Mineral accumulation on vortex or
spreader holes of xture.
Remove the mineral build up.
Flush is not considered quiet. Flush is loud.
Control stop may not be adjusted for
quiet operation.
Adjust the control stop for quiet opera-
tion keeping in mind the xture evacua-
tion requirements.
Fixture may be contributing to noise. Check noise created by xture by
placing a cover over the bowl opening to
separate valve noise from bowl noise. If
it is determined the xture is too noisy,
consult with xture manufacturer.
Piping system may be source of noise. High pressure in the system can
sometimes be controlled by the stop
valve. Other sources of noise may be
the absence of air chambers and shock
arrestors, loose pipes, improper size
pipes, etc. In these cases, the building
engineer should be consulted.
Valve leaking near valve head. Water droplets seen between
valve head and valve body.
Locking ring not tight. Tighten locking ring. See Sensor Angle
Adjustment section for reference.
Valve ushed with no user
present
Valve ushed with no user
present
Highly reective environment
Re-calibrate sensor range - see Sensor
Range Adjustment section
Sensor range set too far; picking up
other objects
Flush valve may be congured to
exchange the water in the trap-way at
every [24 / 48 / 72] hours after no usage
(default is OFF).
See Courtesy Flush Settings step 4 for
instructions on changing dipswitch set-
tings to achieve desired trap exchange
timing.
Trouble Shooting Guide