Jacuzzi J?SN180F User Manual


34 J‐S180F/J‐S199F
Code Definion
14 ThermalFuse
 Checkforrestricons inairflowaroundunitandventterminal.
licensed
professional
only
Checkgastypeofunitandensureitmatchesgastypebeingused.
Checkforlowwaterflowinacirculangsystemcausingshort‐cycling.
Ensuredipswitchesaresettotheproperposion.
Checkforforeignmaterialsincombusonchamberand/orexhaustpiping.
Checkheatexchangerforcrac
ksand/orseparaons.
Checkheatexchangersurfaceforhotspotswhichindicateblockageduetoscalebuild‐up.Refer
toinstruconsinmanualforflushingheatexchanger.Hardwatermustbetreatedtoprevent
scalebuildupordamagetotheheatexchanger.
Measureresistanceofsafetycircuit.
Ensurehighfirean
dlowfiremanifoldpressureiscorrect.
Checkforimproperconversionofproduct.
16
OverTemperature
Warning
 Checkforrestricons inairflowaroundunitandventterminal.
licensed
professional
only
Checkforlowwaterflowinacirculangsystemcausingshort‐cycling.
Checkforforeignmaterialsincombusonchamberand/orexhaustpiping.
Checkforblockageinheatexchanger.
31 BurnerSensor
licensed
professional
only
Measureresistanceofsensor.
Replacesensor.
32
OutgoingWater
TemperatureSensor
Checksensorwiringfordamage.
Measureresistanceofsensor.
Cleansensorofscalebuild‐up.
Replacesensor.
33
HeatExchanger
OutgoingTemperature
Sensor
Checksensorwiringtobesureithasnotbeenshortcircuited.
Measureresistanceofsensor.
Cleansensorofscalebuild‐up.
Replacesensor.
34
CombusonAir
TemperatureSensor
Checkforrestricons intheintakeandexhaustsystem.
Checksensorwiringfordamage.
Measureresistanceofsensor.
Cleansensorofscalebuild‐up.
Checkfanbladetobesureitisghtonmotorshaandisingoodcondion.
Replacesensor.
52
ModulangSolenoid
ValveSignalAbnormal
Checkmodulanggassolenoidvalvewiringharnessforlooseordamagedterminals.
Measureresistanceofvalvecoil.
61 CombusonFan
Verifyfanwillturnfreely.
Checkwiringharnesstomotorfordamagedand/orlooseconnecons.
Measureresistanceofmotorwinding.
65 WaterFlowControl
Thewaterflowcontrolvalvehasfailedtocloseduringthebathfillfuncon.Immediatelyturnoff
thewateranddisconnuethebathfillfuncon.Contactalicensedprofessionaltoservicethe
appliance.
71 SolenoidValveCircuit
ReplacethePCBoard.
72 FlameSensingDevice
Ensureflamerodistouchingflamewhenunitfires.
Checkallwiringtoflamerod.
Removeflamerodandcheckforcarbonbuild‐up;cleanwithsandpaper.
Checkinsideburnerchamberforanyforeignmaterialblockingflameatflamerod.
Measuremicroampoutputofsensorcircuitwithflamepresent.
Repl
aceflamerod.
73 BurnerSensorCircuit
ChecksensorwiringandPCboardtobesuretheyhavenotbeendamaged.
Replacesensor.
LC
ScaleBuild‐upinHeat
Exchanger(when
checkingmaintenance
codehistory,“00”is
substutedfor“LC”)

licensed
professional
only
Nothinghappenswhen
waterflowisacvated.

licensed
professional
only
No
code
Flushheatexchanger.Refertoinstruconsinmanual.Hardwatermustbetreatedtoprevent
scalebuildupordamagetotheheatexchanger.
NOTE:TheLCcodeistheonlydiagnosccodethatwillallowtheunittokeeprunning.Thedisplay
willalternatebetweentheLCcodeandthetemperatureseng.Thecontrollerwillconnueto
beep.TheLCcodewillresetifpoweristurnedoffandthenon.
Cleaninletwatersupplyfilter
.
Onnewinstallaonsensurehotandcoldwaterlinesarenotreversed.
Verifyyouhaveatleasttheminimumflowraterequiredtofireunit.
Checkforcoldtohotcrossover.Isolatecirculangsyste mifpresent.Turnoffcoldwatertothe
unit,openpressurereliefvalve;ifwaterconnuestoflow,thereisbleedoverinyour
plumbing.
Verifyturbinespinsfreely.
Measuretheresistanceofthewaterflowcontrolsensor.
Ifthedisplayisbla
nkandclickingiscomingfromtheunit,disconnectthewaterflowservomotor
(RD,BL,BR,GY,YL).Ifthedisplaycomeonthenreplacethewaterflowservomotor.
Remedy

Jacuzzi J?SN180F Specifications

General

Brand	Jacuzzi
Model	J?SN180F
Category	Water Heater
Language	English