WaterLogic WL400 Series Operating instructions

WL400ManualPage80–Revision:7‐16‐2018
HOTWATERTROUBLESHOOTINGINDEX


Hot Water Problems
1. Hot Water is not Hot 185° +/- 5°
2. Boiling of the Hot Tank at higher elevations
Also includes related instructions for
 Disabling Sleep Mode
 Resetting the Hot Tank Overloads or High Limit Safety


1. HotWaterisnotHot(185°+/‐5°F)


TheHottemperaturesetpointis185°andiscontrolledbyathermostatonthesideofthetank.

Therearetworesettableoverloadsorhighlimitsafetyabovethethermostatonthesideofthetank
thatwilltriptopreventdamagetotheunitifthetankisdryheated(turnedonwithoutwaterinit).


Ittypicallytakes10minutesforthe500Wtoheatthe1.2Literofroomtemperature(ambient)water
tothe185°Fsetpoint.

PossibleReason Solution
Isunitinsleepmode?
Ifnowaterhasbeendispensedfor3ormorehours,unitgoesinto
sleepmode.Dispensehotwater,wait5minutes,check
temperature.

Ifunitstilldoesnotheatproceedto“Nopowertoheater
elements”below.


SeeDisablingSleepModeInstructionsthatareincludedfurther
belowinthisTroubleshootingSection
Nopowertoheaterelements


CheckthattheGreenHeater/
Compressorswitchison.I=ON
Looseorimproperly
connectedwire(s)tothe
heatingelement/hottank.
Visuallyinspectwireleadsgongtothehottank;confirmproper
connectionstotheheatingelements.

Hottanklifeis3‐5years,dependingonusage.

*Typically,dealersswapoutthehottankatsite,takebacktothe
shoptorepair.

WL400ManualPage81–Revision:7‐16‐2018
OverloadsTripped

Overloadsareasafetyfeature
toensurethetankdoesnot
overheat.
Overloadswill“click”whenpushed.Theoverloadisautomatically
resetwhenpressed.


SeeResettingtheHotTankOverloadsorHighSafetyLimit
Instructionsthatareincludedfurtherbelowinthis
TroubleshootingSection
Thermostatoroverloads
“open”onHotTank
TurnPoweroff.CheckOHM’sresistanceacrossterminalsoneach
ThermostatandOverloadsseparately.

GoodcomponentswillindicateaclosedcircuitorzeroOHM’son
themeter.

Replacecomponentsasnecessary.
HeatingCoilnotWorking
TurnPoweroff

Drainhottank

Usemulti‐metertocheckheaterelementforapproximately26
OHM’sresistance.

Hottankmustbeemptyifyouarecheckingforcontinuity.

ReplaceHotTankasnecessary.




WL400ManualPage82–Revision:7‐16‐2018
2. BoilingoftheHotTankathigherelevations


TheWL400WaterTreatmentSystemhasanextrahottemperatureresetpresetto95°C(203°F).This
leadstoboilingoftheHotTankathigherelevations.Therearetwooptionstocorrectingthisissue. 

Option1‐ReplaceMainPCBPartNumberEN‐6137(WaterlogicSparepartshavealower90°C
(194°F)ExtraHotSetting.
Option2‐TurndownthetemperaturecalibrationontheMainPCBPartNumberEN‐6137.
1. RemoveLeftHandSidePanel
2. RemovetheMainPCBMetalCover
3. AccessandlocatetheHotTemperatureCalibration
Trimmer(potentiometer)ontheMainPCB
4. TurntheHottemperaturecalibration
counterclockwisefrom12:00positionto11:00
position

5. ChecktheoutputtemperatureofboththeHotandExtraHot.ExtraHotshouldbeapproximately
87.8–90.6°C(190‐195°F)atthefaucet.

WL400ManualPage83–Revision:7‐16‐2018
DISABLINGSLEEPMODE





















SleepMode‐pressanybuttontobringmachineoutofsleepmode





WL400ManualPage84–Revision:7‐16‐2018
RESETTINGTHEHOTTANKOVERLOADSORHIGHLIMITSAFETY


 
1.


TurnoffGreenHeater/CompressorSwitchonrearofunit.O=OFF


2. UnplugthePowerCordfromrearofunit.
3.



RemovetheTowerCoverLockingScrewsandSlide
Lockstowardsoutsideofunittounlockbothlocks.
4. SlideTopCoverforwardandliftinfrontoftopcovertoopen.
5.




Removethe2PhillipsScrewsfromLeftSidePanel(whenstanding
behindunit)andremovesidepanel. 
6.



CheckandpressbothThermalOverloadbuttonsonHotTank. 
7. Close,lockandreplaceTopCoverScrews
8.


TurnonRedPowerSwitchandGreenHeater/Compressor
Switch.I=ON

RemoveTwoScrews
SlideLocksOpen