Installation Guide

FV838 Rev. A 10/5/2023
Page 11
Forfurtherassistancewithtroubleshooting,visithttp://www.zurn.com/
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 Battery Detection
Settings for instructions on changing
dipswitch settings to achieve desired
trap exchange timing.
Trouble Shooting Guide