Rheem HTPG EcoNet Series - Page 4

# Remedy
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Verifylastdefrostcycledurationunder Status →Defrost→LastDefr.Time ,and/orforceadefrostmanuallyandtimeittoverify
duration.LowProfileandCenterMountevaporatorsshouldnotdefrostforlongerthan30‐35minutes.AdjustDefrost
TerminationTemperature(Def.Term.Temp )downasneeded,andalsoadjusttheMaximumDefrostTime( Def.MaxRun
Time )downfromthe60minutedefaultsettingifneeded.
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TheDrainTempsensormaybeusedonLowProfileFreezersasanadditionalearlywarningthaticeisbuildinguponthedrain
pan.ToenablethisfunctionsetDrainSensor?toYESonSettings →Equipment ,andmakesurethataDrainTempSensor(part
no.08219623)isconnectedtothecontroller(DRAIN)andsecuredtothedrainpan(carefullysecuringthesensorwirefrom
touchingtheheaters).Whenadefrostcycleends,iftheDrainTempdoesnotreachTerminationTemp,thecontrollerwill
generatethe"DrainTemp<DefrostTerminationTemp." alarm.Verifythatthedrainpanheaterisconnectedandworking
properly,and/orthatthesensorisproperlyplacedflatonthedrainpansecuredwiththesamenutthatisholdingtheheater
bracket.Verifythatdrainlineisfreeofobstructionandheattapeisworkingproperlytokeepthelinewarm.
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IfnoDrainTempsensorisinstalled,makesureDrainTempsensorisconfiguredtoNOunder Settings →Equipment→Drain
Temp? .IfaDrainTempsensorismeanttobeinstalled,makesurethesensorisreconnectedorreplaced(partno.08219623)
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GotoSettings →Equipment→AuxTemp? andmakesureitisconfiguredtoNO.TheAuxTempsensorinputisnotusedinthe
currentsoftwareversion.
AirDefrostunits(settoCooler)typicallyenddefrostonmaximumtime,sointhisscenariothisnotificationwouldbenomal.Ifa
shorterorlongerdefrostcycleisdesired,theMaxDefrostTimecanbeadjustedunder Settings →Equipment→Def.MaxRun
Time (defaultis60minutes).
ElectricDefrostunits(settoFreezer)typicallyenddefrostwhentheEvapTempreadingreachesDefrostTermination
Temperature.IfanElectricDefrostevaporatorisendingdefrostonmaximumtimeinstead,verifyunder
Settings→Equipment→Def.MaxRunTime issettonolessthan30minutes(orisalreadyatthedefault60minutes).Ifitisstill
terminatingonmaxtime,verifytheEvapTempsensorandelectricheatersbyreferringtoitems10and11inthisguide.
Verifythateachcontrollerthatisintendedtoworkinthegroupisaddressedproperly.Oneachcontrollerdisplay,goto
Settings →Equipment→Group‐MemberCfg. tosettheaddress.Group1LeaderwillbeG1‐L,Group1Follower#2willbeG1‐2,
Group1Follower#3willbeG1‐3,etc.SameforGroups2,3and4.Eachgroupwillsupportamaximumof6evaporators(1
Leader+5Followers).Makesurethattherearenoconflictingaddressessetbetweentwoormorecontrollers.
Verifythatthecommunicationwireusedisatleast 22gauge,shielded.Verifyeachofthe3conductorsareterminatedateach
boardonE1,E2andRTterminalsandthatpolarityismaintainedfromboardterminaltoboardterminal(awirelandedatE1on
thefirstboardhastogotoE1oneveryotherboardonthedaisychain;sameforE2andRT).Verifythattheshieldingstrands
areconnectedateveryspliceandterminatedatagroundpointononeendofthedaisychainonly.
Verifyoneachcontrollerinthegroupthat SystemEnableissettoYES.GotoSettings →SystemEnable andverifythatallthe
controllersinthegrouparesettoYES.
Verifysoftwareversionateachcontrolleronthedisplaybynavigatingto Service →SowareVersion .Everycontrollerinone
Groupmustberunningthesamesoftwareversionforthegroupfunctiontooperateproperly.Ifyouarehavinggroupsync
issuesandhaveoneormoreboardswherethesoftwareversiond
oesnotmatchtheothers,pleasecallCustomerSupport.
GotoSettings →DateandTime oneachcontrollerboarddisplaytosetthecontrollertimeclock.IfyouhaveaCommand
CenterDisplaywiredtooneormorecontrollerboards,thetimeclockcanbesetthereanditwillbesimultaneouslybroadcastto
everycontrollerconnected.
Ifthecontrollerboardremainspoweredoffformorethanacoupleofdays,thetimeclockwillhavetobereset.Goto
Settings →DateandTime oneachcontrollerboarddisplaytosetthecontrollertimeclock.IfyouhaveaCommandCenter
Displaywiredtooneormorecontrollerboards,thetimeclockcanbesetthereanditwillbesimultaneouslybroadcasttoevery
controllerconnected.
IfinstallingCommandCenterwithin150feetofthenearestEcoNetcontroller,makesurethatthewiresfromtheRandC
terminalsattheCommandCentermountingbracketaresecurelyconnectedtothe0Vand16Vterminalsatthecontroller.
Makesurethecontrollerispoweredon.IfCommandCenterisinstalledmorethan150feetawayfromnearestcontroller,make
sureitisconnectedtoaseparate24VACor24VDCpowersupply.PleaserefertotheCommandCenterwiringdiagramonPage
13oftheEcoNetInstallationManual.
InspecttheCommandCenterDisplayforsignsofdamage(crackedscreen,burnmarksonthecircuitboard/mountingbracket,
brokencomponents).Ifdamaged,replacetheCommandCenterDisplay.MakesurethattheCommandCenterisinstalled
indoors,outsideofthewalk‐incooler/freezer,andthatitdoesnotgetwetordropped.
Timeclockoncontrollermaynothavebeenset.
Timeclockoncontrollermayhavebeensetat
install,butaprolongedpowerlossmayhavereset
it.
TimestampontheAlarmHistoryisnot
accurate.
EcoNetcontrollermaynotbeaddressedproperly
toworkaspartofthegroup.
EcoNetcontrollermaynotbewiredproperlyto
therestofthegroup.
Oneormorecontrollersinthegroupmaybe
manuallydisabled.
Onecontrollermayhaveadifferentsoftware
versionfromtheothercontrollersinthegroup.
Ihavemultipleevaporatorsinthesame
boxworkingasagroup,butoneormore
ofthemarenotcooling/operatinginsync.
MakesurethatCommandCenterDisplayis
connectedtoapowersupply.
CommandCenterDisplaycouldbedamaged.
CommandCenterDisplayscreenisblank.
EcoNetControllergeneratesalarm"A002
DrainTemp<DefrostTermination
Temp." (LowProfileFREEZERonly).
Theremaybeiceonthedrainpanafteradefrost
cycleended;drainlinecouldbeblocked.
EvaporatorCoilissteamingexcessively
duringadefrost;waterdroplets
accumulatingontheceiling(LowProfile
andCenterMountFREEZERunits).
Defrostcycleisrunningtoolong.
EcoNetControllergeneratesnotification
"T001DefrostFailure:MaxTimeExpired"
Problem PossibleCause
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EvaporatorworksonAirDefrost
EvaporatorworksonElectricDefrost
EcoNetControllergeneratesalarm"A104
DrainTempThermistorFailure "
DrainTempSensorconfiguredtoYESunder
Settingsandsensorisnotconnected.
EcoNetControllergeneratesalarm"A105
AuxTempThermistorFailure "
AuxTempSensorisconfiguredtoYESunder
Settingsandsensorisnotconnected.
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