WaterLogic WL290 Operating instructions

WL290Manual Page57Revision9‐3‐2019
HOTWATERTROUBLESHOOTINGINDEX
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1. HotWaterisnotHot85°C(185°+/‐5°F)
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IncludedinthissectionaretheTwoResettableHotTankOverloads(HighLimitSafety)
Instructions.
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1. HotWaterisnotHot85°C(185°+/‐5°F)
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TheHottemperaturesetpointis85°C(185°F)andiscontrolledbyathermistorinthewellof
theHotTank.
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TherearetwoHotTankOverloadDevices(HighSafetyLimit)onthesideoftheHotTankthat
willtriptopreventdamagetotheunitifthetankisdryheated(turnedonwithoutwaterin
it).
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Ittypicallytakes10minutesforthe500Wtoheatthe1.6Literofroomtemperature
(ambient)watertothe85°C(185°F)setpoint.
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PossibleReason Solution
Nopowertoheaterelements
CheckthattheRedHeaterandCompressor
switchison.
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TurnRedHeaterandCompressorSwitchon.
I=ON
HotTankOverloadDevices
(HighSafetyLimit)tripped
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HotTankOverloadDevices
(HighSafetyLimit)isasafety
featuretoensurethetankdoes
notoverheat.
HotTankOverloadDevices(HighSafetyLimit)will“click”
whenpushed.TheHotTankOverloadDevices(High
SafetyLimit)areautomaticallyresetwhenpressed.
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SeeResetting HotTankOverloadDevices(HighSafety
Limit)Instructionsthatareincludedfurtherbelowinthis
TroubleshootingSection
HotTankOverloadDevices
(HighSafetyLimit)“open”on
HotTank
TurnPoweroff.
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CheckOHM’sresistanceacrossterminalsoneachofthe
HotTankOverloadDevices(HighSafetyLimit)separately.
Goodcomponentswillindicateaclosedcircuitorzero
OHM’sonthemeter.
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Replacecomponentsasnecessary.
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.
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Hottanklifeis3‐5years,dependingonusage.
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WL290Manual Page58Revision9‐3‐2019
*Typically,dealersswapoutthehottankatsite,takeback
totheshoptorepair.
HeatingCoilNotWorking
TurnPoweroff;Drainhottank;Usemulti‐metertocheck
heaterelementforapproximately26OHM’sresistance.
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Hottankmustbeemptyifyouarecheckingforcontinuity.
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ReplaceHotTankasnecessary.
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WL290Manual Page59Revision9‐3‐2019
RESETTINGTHETWOHOTTANKOVERLOADDEVICES(HIGHLIMITSAFETY)
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 
1.
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TurnoffRedHeaterandCompressorPowerSwitchO=OFFonrearofunit.
2. UnplugthePowerCordfromrearofunit. 
3.
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Remove4PhillipScrewsfromtheAccessPanelonrearofunit
andLowerAccessPanel. 
4.
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LocateprotectivemetalboxonrearofHotTank.Pushdownontopofmetalboxto
accessthetwoOverloadResetDevices.
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5.
PresstheOverloadResetDevices.
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6. Reattachthemetalboxbydepressingthetopflapofthemetalboxsoitsnapsbackinto
itsoriginalpositionontheHotTank.

WL290Manual Page60Revision9‐3‐2019
7.
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ReplacetheAccessPaneland4Philipsscrews. 
8. PluginthePowerCord.
9. MakesurethehotandcoldtanksarefilledwithwaterBEFOREturningontheRed
HeaterandCompressorPowerSwitch
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CAUTION!NEVERTURNONHEATERBEFOREFILLINGHOTTANK.
RedHeaterandCompressorPowerSwitchmustbeintheO=OFFposition
whiletheHotTankisempty.Damagecouldoccurwithinoneminuteand
theoverload(highlimit)willrequiremanualresetifheateristurnedon
withanemptyHotTank.
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10. Verifythecoolerisfullyoperationalbeforeinstallingitatthecustomers’site.
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