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Rinnai RL94e REU-VC2837WD-US User Manual

Rinnai RL94e REU-VC2837WD-US
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38 VCSeriesManual
Code DefiniƟonRemedy
19 ElectricalGrounding Checkallcomponentsforelectricalshort.
32
OutgoingWater
TemperatureSensor
Checksensorwiringfordamage.
Measureresistanceofsensor.
CleansensorofscalebuildͲup.
Replacesensor.
33
HeatExchangerOutgoing
TemperatureSensor
34
CombusƟonAir
TemperatureSensor
CheckforrestricƟons inairflowaroundunitandventterminal.
Checksensorwiringfordamage.
Measureresistanceofsensor.
CleansensorofscalebuildͲup.
EnsurefanbladeisƟghtonmotorshaŌandisingoodcondiƟon.
Replacesensor.
41
Outsidetemperature
thermistor(outdoor
modelsonly)
Checksensorwiringfordamage.
Measureresistanceofsensor.
CleansensorofscalebuildͲup.
Replacesensor.
51
Inletwatertemperature
thermistor(RL94only)
52
ModulaƟngSolenoidValve
Signal
CheckmodulaƟnggassolenoidvalvewiringharnessforlooseordamagedterminals.
Measureresistanceofvalvecoil.
57 Burner
Contactalicensedprofessional.
61 CombusƟonFan
Ensurefanwillturnfreely.
Checkwiringharnesstomotorfordamagedand/orlooseconnecƟons.
Measureresistanceofmotorwinding.
65 WaterFlowControl
ThewaterflowcontrolvalvehasfailedtocloseduringthebathfillfuncƟon.Immediatelyturn
oīthewateranddisconƟnuethebathfillfuncƟon.Contactalicensedprofessionaltoservice
theappliance.
70 PCBoard
CheckPCboardDIPswitchesforcorrectposiƟon.
ChecktheconnecƟonharnessatthe connecƟononthePCboard.
ReplacePCboard.
71 SolenoidValveCircuit
ReplacethePCBoard.
72 FlameSensingDevice
Verifyflamerodistouching flamewhenunitfires.
Checkallwiringtoflamerod.
RemoveflamerodandcheckforcarbonbuildͲup; cleanwithsandpaper.
Checkinsideburnerchamberforanyforeignmaterialblockingflameatflamerod.
Measuremicroampoutputofsensor
circuitwithflamepresent.
Replaceflamerod.
79 WaterLeakDetected
WaterhasbeendetectedattheboƩomoftheunit.Turnoīwatersupply. Checkallplumbing
internallyforleakage.
LC#
(LC0,
LC1,
LC2,…)
ScaleBuildͲupinHeat
Exchanger(whenchecking
maintenancecodehistory,
“00”issubsƟtutedfor
“LC”)
LC0~LC9indicatesthatthereisscalebuild
upintheheatexchangerandthattheheat
exchangerneedstobeflushedtopreventdamage.RefertotheflushinginstrucƟonsinthe
manual.Hardwatermustbetreatedtopreventscalebuildupordamagetotheheat
exchanger.
TooperatethewaterheatertemporarilyunƟl
theheatexchangercanbeflushed,pushtheOn/
OībuƩononthetemperaturecontroller5Ɵmes.RepeatedLCcodeswilleventuallylockout
thewaterheater.
PleasecallRinnaitechnicaldepartment.
FF
Maintenancehasbeen
performed
Indicatesalicensedprofessionalperformedmaintenanceorcorrectedanissue.
No
code
Nothing
happenswhen
waterflowisacƟvated.
Cleaninletwatersupplyfilter.
OnnewinstallaƟonsensurehotandcoldwaterlinesarenotreversed.
Verifyyouhaveatleasttheminimumflowraterequiredtofireunit.
licensed
professional
only
Checkforcoldtohotcrossover.IsolatecirculaƟngsystemifpresent.Turnoīcoldwatertothe
unit,openpressurereliefvalve;ifwaterconƟnuestoflow,thereisbleedoverinyourplumbing.
Verifyturbinespinsfreely.
Measuretheresistanceofthewaterflowcontrolsensor.
Ifthedisplayisblankandclickingiscomingfromtheunit,disconnectthewaterflowservo
motor(GY,BR,O,W,P,BL,R).Ifthedisplaycomesonthenreplacethewaterflowservo
motor.
licensed
professional
only

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Rinnai RL94e REU-VC2837WD-US Specifications

General IconGeneral
TypeTankless
InstallationIndoor
Energy SourceNatural Gas or Propane
Flow Rate9.4 GPM
Energy Factor0.82
Gas TypeNatural Gas or Propane
Minimum Flow Rate0.4 GPM
Voltage120V
Ignition TypeElectronic
Maximum BTU199, 000 BTU
Temperature Range98°F to 140°F
Minimum BTU Input15, 000 BTU/hr
Warranty12 years heat exchanger, 5 years parts, 1 year labor

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