WaterLogic WL350 Operating instructions

WL350Manual Page59–Revision11‐21‐2018
DISPENSETROUBLESHOOTINGINDEX
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1. Irregular / Intermittent Dispensing from One Side
2. Hot Water Intermittently Forced Out Through the Faucet, or a Dual Stream Out of the
Faucet
3. Dispensing won't stop when not holding the Dispensing Button
4. Steady Drip out of Faucet
5. Hot Water or Steam coming out of both the Faucet and the Vent Hole
6. Hot Water coming out of Faucet Vent Hole
7. Low Flow of Water
8. Restricted Flow of Hot Water
9. Hot Water Drip out of Faucet
10. Dispenses Hot and Cold Water at the same time
11. No cold water available
12. Water does not dispense from unit
13. No Water is Dispensing from One Side – Cold or Hot
14. Cold Water dispenses from Faucet and Vent Outlet Simultaneously
15. Small amount of water periodically dispenses from faucet automatically
16. Dispense Buttons Stick
17. Water Stream is at an Angle
18. Run-On - Water continues to dispense out of faucet after releasing the dispense button
 Also includes related instruction for Hot Tank Descaling 
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WL350Manual Page60–Revision11‐21‐2018
1. Irregular/IntermittentDispensingfromOneSide

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PossibleReason Solution
Toomuchwaterpressure.
Recommend40to60psifor
theWL350WaterTreatment
Systemtooperateproperly.
Thecorrectinputwaterpressureiscriticaltotheperformanceof
theunittoallowsolenoidstoopen.

Checkwaterpressureattheinletbulkheadwithawaterpressure
gauge.

Additionalmethodofverificationistoturnoffwatertounitand
pressthedispensebutton.Doesthesolenoidopenwithout
waterpressuretotheunit?Listenforsolenoidtoactivate,not
button“click”.

Adjustwaterpressureto40‐60psi.

Looseorbadconnectionon
theFrontDispensingPCBor
SolenoidConnector
Checkthattheyareconnectedproperlyandtightened.
Solenoid
IfboththeWaterPressureandPCBhavebeenruledout,thenitis
theSolenoid.

ReplaceSolenoid.
Dispensingbuttonisbrokenon
PCB
CheckPCBforlooseordamagedbutton.ReplacePCBas
necessary.
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2. HotWaterIntermittentlyForcedOutThroughtheFaucet,oraDualStreamOutof
theFaucet

PossibleReason Solution
Mineraldepositsonthe
expansionslotinsidethehot
tankventchamberwhich
blocksthenormalpathof
watertoexpand.
DescaleHotTank

SeeHotTankDescalingInstructionsthatareincludedfurther
belowinthisTroubleshootingSection.
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WL350Manual Page61–Revision11‐21‐2018
3. DispensingWon’tStopWhenNotHoldingtheDispensingButton
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PossibleReason Solution
Toomuchwaterpressure.
Recommend40to60psifor
theWL350WaterTreatment
Systemtooperateproperly.
Thecorrectinputwaterpressureiscriticaltotheperformanceof
theunittoallowsolenoidstoopen.

Checkwaterpressureattheinletbulkheadwithawaterpressure
gauge.
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Additionalmethodofverificationistoturnoffwatertounitand
pressthedispensebutton.Doesthesolenoidopenwithout
waterpressuretotheunit?Listenforsolenoidtoactivate,not
button“click”.
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Adjustwaterpressureto40‐60psi.
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BadDisplayPCB ReplaceMainPCB
PartNumber:WLCPPN12‐8355/EN‐6126‐L00‐00
DebrisintheSolenoid InspectSolenoidfordebrisandcleanoutasneeded.
DispensingButtonStuck
DirtorForeignmaterialisfillingthegaparoundthepush‐buttons.
Inspectthepushbuttonsandcleansurroundingarea.Inspect
faucetassemblyinsidetheunitandcleanasnecessary.
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4. SteadyDripOutofFaucet
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PossibleReason Solution
DebrisinSolenoid InspectSolenoidfordebrisandcleanoutasneeded.
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5. HotWaterorSteamComingoutofboththeFaucetandVentHole
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PossibleReason Solution
Impropertubingattachment
fromtheHotTanktoFaucetor
viceversa.
CheckthatthetubingisconnectedfromHotTankOutletsto
correctFaucetattachments.Connecttubingtooutletsas
needed.
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WL350Manual Page62–Revision11‐21‐2018
6. HotWaterComingoutofFaucetVentHole
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PossibleReason Solution
Toomuchwaterpressure.
Recommend40to60psiforthe
WL350WaterTreatmentSystemto
operateproperly.
Thecorrectinputwaterpressureiscriticaltothe
performanceoftheunittoallowsolenoidstoopen.

Checkwaterpressureattheinletbulkheadwithawater
pressuregauge.

Additionalmethodofverificationistoturnoffwatertounit
andpressthedispensebutton.Doesthesolenoidopen
withoutwaterpressuretotheunit?Listenforsolenoidto
activate,notbutton“click”.

Adjustwaterpressureto40‐60psi.
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Impropertubingattachmentfrom
thetanktofaucetorviceversa.
Verifytubingisconnectedproperlyfromtankoutletsto
correctfaucetattachments.
HotTankoutletholeisscaledover.
InspectandDescaleTankasneeded.

SeeHotTankDescalingInstructionsthatareincluded
furtherbelowinthisTroubleshootingSection.
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Expansionchamberisnotsealed
properly. ReplacetheHotTank.
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WL350Manual Page63–Revision11‐21‐2018
7. LowFlowofWater–RatedServiceFlowis1.89Liters(0.5gallons)perMinute
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PossibleReason Solution
DetermineFlowofWater
RatedFlowRateis1.89Liters(0.5gallons)perminute.
Checkflowratebydispensingintoacontainertomeasure
foroneminuteandmeasuretheamountofwaterthatwas
dispensed.
FeedLinestoosmall
Feedlinescanrestrictflowifrunlongdistancesfromthe
supply.Itmaybenecessarytoincreasethesupplyline(e.g.,
use3/8”feedlinevs.¼”.
Elbowsandturnsinthefeed
line Minimizeelbowsandturnsinthefeedline.
Filters
Filterswithhighpressuredropduetofoulingorjustby
design.Changefiltersmorefrequentlyorgotohigher
micronsizefilterforlocalwaterconditions.
Restrictions
Followflowpathtoensuretherearenoundiscovered
restrictionsduetodebrisormalfunctioningvalves,including
thesupplyvalveatthesource.
BoosterPump Addaboosterpumptothesupplylineifthefeedisslower
thanneeded.
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WL350Manual Page64–Revision11‐21‐2018
8. RestrictedFlowofHotWater
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PossibleReason Solution
Partiallyclosedwatersupplyvalveto
theunit. Openwatersupplyvalve.
HotTankoutletholeisscaledover.
DescaleTank.

SeeHotTankDescalingInstructionsthatareincluded
furtherbelowinthisTroubleshootingSection.
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Tubingiscreasedorhasa“kink”init. Inspectandreplacetubingasnecessary.
Faucetnipplescreenmeshhas
obstruction(s)
Unscrewfaucetnipplefromfaucetandremoveany
obstruction(s)fromscreenmesh.
ExhaustedFilter ReplacetheFilter
SolenoidconnectiontotheDisplay
PCB
Turnpoweroff;unplugtheWL350WaterTreatment
Systemandvisuallyinspectsolenoidconnectionsintothe
DisplayPCB.Verifythesolderingpointsonconnectionsare
secureintotheboard.

RemovethePCBtoinspectthefrontoftheboard.
SolenoidValveisMalfunctioning Inspectvalvecomponentsforproperfunction.Replaceas
necessary.
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WL350Manual Page65–Revision11‐21‐2018
9. HotWaterDripoutofFaucet

PossibleReason Solution
SmallOutletVentHolesusceptibletoscale
buildup.
DescaleTank.

SeeHotTankDescalingInstructionsthatareincluded
furtherbelowinthisTroubleshootingSection.


AllWaterlogicHotTankshaveabuiltinVentor
ExpansionChamberinthetopofthetankexceptfor
WL270(GF)units.

TheVentChamberallowsforexpansionofthewater
whenitisheated.

Thechambersareseparatedbyawelded‐intank
baffle.

WateralwaysflowsintothebottomoftheHotTank
andoutthetoptotheFaucet.

TheHotTankOutletTubehasaRestrictorinitsbase.
Thisensuresthereservoirisalwaysfullbyallowing
morewaterinthanout.

ThereisasmallholeinthesideoftheHotTankOutlet
TubethatallowsairandwatertopassintotheVent
Chamberasitisheated.

WaterintheVentChamberissuctionedbackthrough
theOutletTubeventholewhenwaterisdispensed.

ExpansionofwaterasitisheatedintheReservoirwill
pushthewateroutthefaucetwhentheoutlettube
ventholebecomespluggedwithdebrisorscale.

ThesmallOutletVentHoleissusceptibletoscalebuild
upandisakeyindicatorthatdescalingisrequired.

ItiscriticaltodescaletheHotTankthroughthevent
lineandoutletlineonaregularbasistopreventthis
problem.

Descalingthroughtheinletand/oroutletlinesonly
willnotcleantheventchamberandoutletventhole
properly.



WL350Manual Page66–Revision11‐21‐2018

10. DispensesHotandColdWateratthesametime


PossibleReason Solution
Toomuchwaterpressure.
Recommend40to60psifor
theWL350WaterTreatment
Systemtooperateproperly.
Thecorrectinputwaterpressureiscriticaltotheperformanceofthe
unittoallowsolenoidstoopen.

Checkwaterpressureattheinletbulkheadwithawaterpressure
gauge.

Additionalmethodofverificationistoturnoffwatertounitand
pressthedispensebutton.Doesthesolenoidopenwithoutwater
pressuretotheunit?Listenforsolenoidtoactivate,notbutton
“click”.

Adjustwaterpressureto40‐60psi.

HotorColdsolenoidisstuck
open.
RemoveTopCover.

CheckHotSolenoid:Dispensecoldwaterandvisuallyinspecttubing
forwaterflowfrombothtanks.

CheckColdSolenoid:DisconnectElbowfromoutletofCold
Solenoid.Selecthotwateranddispense(quicklyreleasing
DispensingButtontoavoidmuchwatercomingoutofColdSolenoid.

ReplaceSolenoidasnecessary.



WL350Manual Page67–Revision11‐21‐2018
11. NoColdWaterAvailable


PossibleReason Solution
Toomuchwaterpressure.
Recommend40to60psifor
theWL350WaterTreatment
Systemtooperateproperly.
Thecorrectinputwaterpressureiscriticaltotheperformanceofthe
unittoallowsolenoidstoopen.

Checkwaterpressureattheinletbulkheadwithawaterpressure
gauge.

Additionalmethodofverificationistoturnoffwatertounitand
pressthedispensebutton.Doesthesolenoidopenwithoutwater
pressuretotheunit?Listenforsolenoidtoactivate,notbutton
“click”.

Adjustwaterpressureto40‐60psi.

ClosedWaterSupplyValve OpentheWaterSupplyValve
ColdWaterSolenoidValve
malfunction Inspectthevalvecomponentsforproperfunctionality.
RedHeater&Compressor
Switchonunitisoff.
Ifwaterisdispensingatroomtemperature:

TurnRedHeater&CompressorSwitchon.
I=ON
Looseconnection(s)onthe
DisplayPCB
Turnpoweroff;unplugtheWL350WaterTreatmentSystemand
visuallyinspectsolenoidconnectionsintotheDisplayPCB.Verify
thesolderingpointsonconnectionsaresecureintotheboard.

RemovethePCBtoinspectthefrontoftheboard.
ExhaustedFilter Replacefiltersasneeded.



WL350Manual Page68–Revision11‐21‐2018
12. WaterdoesnotdispensefromUnit


PossibleReason Solution
Toomuchwaterpressure.
Recommend40to60psifor
theWL350WaterTreatment
Systemtooperateproperly.
Thecorrectinputwaterpressureiscriticaltotheperformanceofthe
unittoallowsolenoidstoopen.

Checkwaterpressureattheinletbulkheadwithawaterpressure
gauge.

Additionalmethodofverificationistoturnoffwatertounitand
pressthedispensebutton.Doesthesolenoidopenwithoutwater
pressuretotheunit?Listenforsolenoidtoactivate,notbutton
“click”.

Adjustwaterpressureto40‐60psi.

Closedwatersupplyvalve Openthewatersupplyvalve.

Theunitisnotproperly
pluggedintoelectricaloutlet

Checkelectricaloutletconnection,orforblowncircuitbreaker.
RedHeater&Compressor
Switchbuttononunitisinthe
offposition


TurnRedHeater&CompressorSwitchon.
I=ON


15AmpFuseBlown Replacethe15AmpFuseasneeded.
WaterispresentintheBottom
Tray,causingtheLeak
Detectiontotrigger
RemovetheTopCoverandFrontPanel.Tiptheunitslightlyto
drain,dryBottomTraycompletely.
HotandColdSolenoid
connectionsintotheDisplay
PCBareloose.
Turnpoweroff;unplugtheWL350WaterTreatmentSystemand
visuallyinspectSolenoidconnectionsintotheDisplayPCB.Verify
thesolderingpointsonconnectionsaresecureintotheboard.

RemovethePCBtoinspectthefrontoftheboard.
ExhaustedFilter Replacefiltersasneeded.



WL350Manual Page69–Revision11‐21‐2018
13. NoWaterisDispensingfromOneSide–ColdorHot


PossibleReason Solution
Toomuchwaterpressure.

Recommend40to60psifor
theWL350WaterTreatment
Systemtooperateproperly.
VerifywaterpressureattheInletBulkheadwithaPressure
Regulator.

Additionalmethodofverificationistoturnoffwatertounitand
presstheDispenseButton.DoestheSolenoidopenwithoutwater
pressuretotheunit?Listenforsolenoidtoactivate,notthe
DispenseButton“click”.

Adjustwaterpressureto40‐60psi.Thecorrectinputwaterpressure
iscriticaltotheperformanceoftheunittoallowsolenoidstoopen.

PCB
SwitchthehotandcoldwiresonPCB(redandblueconnections).

Ifwaternowdispensesfromtheoppositeside,thisisanindication
thatthereisaPCBproblem.

ReplacePCB
Solenoid
IfboththeWaterPressureandPCBhavebeenruledout,thenitis
theSolenoid.

ReplaceSolenoid.
See“GreenFlashingLight”
FaultCodeSectionofthis
Manual
IndicatestheFirewallUVsystemisnotdetectingadequatedoseof
UVtoensuresafewater.


14. ColdWaterDispensesfromFaucetandVentOutletSimultaneously


PossibleReason Solution
Impropertubingattachment
fromtheColdTanktoFaucet
orviceversa
VerifytubingisconnectedproperlyfromColdTankOutletsto
correctFaucetattachments.
ScalehasformedinsideCold
Tankoutlettube.
RemoveColdWaterOutletTubefromColdTanktoFaucet.Pour
somescaleremoverintoColdTank.
ExpansionchamberinCold
Tankisnotsealedproperly. ReplaceColdTank.



WL350Manual Page70–Revision11‐21‐2018
15. SmallAmountofWaterPeriodicallyDispensesfromFaucetAutomatically


PossibleReason Solution
Toomuchwaterpressure.
Recommend40to60psifor
theWL350WaterTreatment
Systemtooperateproperly.
Thecorrectinputwaterpressureiscriticaltotheperformanceofthe
unittoallowsolenoidstoopen.

Checkwaterpressureattheinletbulkheadwithawaterpressure
gauge.

Additionalmethodofverificationistoturnoffwatertounitand
pressthedispensebutton.Doesthesolenoidopenwithoutwater
pressuretotheunit?Listenforsolenoidtoactivate,notbutton
“click”.

Adjustwaterpressureto40‐60psi.

ColdorHotWatersolenoid
valvemalfunction
Inspectvalvecomponentsforproperfunction.Replaceas
necessary.
Obstructioninsolenoid
housingispreventingproper
sealingofcomponent.
Pre‐determinewhetherwaterbeingdispensedishotorcold.

Isolatethewatersupply;pushtheDISPENSEbuttontoreleasethe
linepressure,andremovethecoilaffixedtothesolenoidstem.

Removethestemfromthesolenoidhousingandallowwaterfrom
thetanktoflushoutthecontaminant(s).

16. DispenseButtonsStick


PossibleReason Solution
DirtorForeignmaterialis
fillingthegaparoundthe
DispenseButtons.
InspecttheDispenseButtonsandcleansurroundingarea.Inspect
FaucetAssemblyinsidetheWL350WaterTreatmentSystemand
cleanasnecessary.



WL350Manual Page71–Revision11‐21‐2018
17. WaterStreamsatanAngle


Solution

RotatetheBung(BlueSilicone)andtheJGfittingsafewdegrees.

WaterFeedPressure
VerifytheIncomingFeedwithaPressureRegulator.Shouldbe40‐
60psi(275‐414kPa)–UsePressureRegulator

Thecorrectinputwaterpressureiscriticaltotheperformanceofthe
unittoallowsolenoidstoopen.
OutgoingFlowRate
VerifytheoutgoingFlowRate.Shouldbe1.89Litersperminute(0.5
gallonsperminute)‐FirewallPurification.

Dispensewaterforoneminute–shouldmeasure1.89Liters(0.5
gallons)perminute

ChangeFlowRestrictorifneeded.



WL350Manual Page72–Revision11‐21‐2018

18. RunOn–Watercontinuestodispenseoutoffaucetafterreleasingthedispense
button

Reason
“RunOn”or“CarryOn”ispresentinallWaterlogicpressurefedunitswithoutoutletsolenoids.

“RunOn”isdefinedistheamountofwaterthatcontinuestodispenseoutofthefaucetafter
releasingthedispensebutton.

RunOnexistsbecausethetankspressurizeaswaterisbeingdispensed.EveryWaterlogictankhasan
outletrestrictortoensurethetanksremainfullofwaterandwateriscontrolledasitisreleasedtothe
faucet.Theinletsolenoidcontrolsflowintothetanks.Thetankswill“depressurize”oncethe
dispensebuttonisreleasedtheinletsolenoidcloses.Asmallamountofwaterwill“RunOn”through
thefaucetasthetankdepressurizestoatmosphericconditions.
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Typical“RunOn”is2‐3seconds.
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“RunOn”canbereducedbyinstallingapressurelimitingdevice.
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Theamountofinletorsupplypressuredirectlyimpactstheamountof“RunOn”asquantifiedbelow.
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WLCPLabTestingofRnOn7‐31‐2013
Pressure Pressure Time FlowRate RunOn
StaticPSI DynamicPSI 4Liters I/min Seconds
68 40 61 2.9508197 3
50 30 72 2.5 2.5
32 20 92 1.956217 2
Pressuremeasuredatinletlinetounit.Staticwithunitclosed.Dynamicwithunit
dispensingcoldwater.
Nofilterswereinstalledinunit.
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WL350Manual Page73–Revision11‐21‐2018
HOTTANKDESCALINGINSTRUCTIONS

TheHotTankrequiresremovalofmineraldeposits(descaling)onaregularbasis.Typically
descalingshouldtakeplaceevery6to12monthstopreservethelong‐termhealthofyourunit.

Usenon‐toxiccleanersuchasScaleKleen,DEZCAL,20%CitricAcidSolution,orUndilutedVinegar
Solutiontoremovemineraldepositsasdirectedbythemanufacturerdependinguponfiltration
andlocalwaterconditions.
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Descalingisanimportantprocessthatremovescalciumdeposits,orscale,thatcanbuildup
insideatankovertime.Calciumandscaleisnon‐toxicbutleftunattendedwillhinderyourunit’s
performance.
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WARNING!PERSONALPROTECTIVEEQUIPMENTREQUIRED.Alwaysensureproper
ventilationanduserubberornitrileglovesandeyeprotectionwhenusingchemicals.Referto
MaterialSafetyDataSheetforspecificrequirementsofeachproduct.

CAUTION!STAINLESSSTEELTANKDESCALING.
TheHotTankismadefromstainlesssteel.Ensuredescalingsolutioniscompatiblewith
stainlessandalwaysflushtheunitcompletely.Disposeinanenvironmentallysafemanner.
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MaterialsNeeded:
 PersonalProtectiveEquipment.RubberorNitrileSafetyGlovesandProtectiveEyewear
 PhillipsScrewdriver
 TemperatureGauge
 WaterPitcherorContainertocollectwaterfromthefaucet
 19Liter(5Gallon)containerordrainbasin
 CitricAcidBasedCleaner
 ¼”PlasticTubing,atleast4feetinlength,andassorted¼”quickconnectfittings
 SanitizingCartridge
 FoodColoring
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9. Putdescalerperdirectionsand3dropsoffoodcoloringintothedescalingcartridge.
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10. Connectdescalingcartridgetotheinletwatersupplyandconnecttoinletbulkheadfittingonthe
backoftheWL350WaterTreatmentSystem.TurnonWaterSupply.
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11. SelectHotWateranddepresstheMainDispensingButtonontheFrontControlPaneluntil
descalingsolution(coloredwater)comesoutofthefaucet.Containeranddrainbasicwillbe
requiredtocatchwaterfromthefaucet.
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12. Turnoffwatersupplyandremovesanitizingcartridgefrominletwatersupply.Reconnectwater
supplytoinletfitting.
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WL350Manual Page74–Revision11‐21‐2018
13. AllowdescalingsolutiontoremainintheHotTankfor15minutes(lengthoftimemayvary
dependingonwaterconditions).
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14. Placeapitcher,catchbasinorothercontainerunderthefaucetoftheWL350WaterTreatment
System.

15. FlushtheHotTankuntilwaterrunsclear.
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16. OnceclearWaterdispensesfromthefaucettheHotTankhasbeendescaled.Alwaysensurethe
WL350WaterTreatmentSystemisperformingtothecustomer’ssatisfaction.


WARNING!HOTWATER.TheWL350WaterTreatmentSystemproducesHotWaterupto
87°C(187°F).Waterabove52°C(125°F)cancausesevereburnsorscalding.Hotwatershould
bedispensedcarefullyintoinsulatedcontainertoavoidinjury.

CAUTION!MUSTREPLACEHOTTANK3‐5YEARSDEPENDINGONUSAGE.TheHotTankand
itscontrolsmustbereplacedaminimumofeverythreetofiveyearstoensureefficientand
dependableoperation.


WARNING!REINSTALLALLPANELSANDCOVERS.AlwaysreinstallallPanels,Protective
covers,andfastenersafterservicingequipment.Failuretodosocouldresultinsevere
personalinjuryandwillvoidthecertificationsandwarrantyoftheequipment.
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