User guide

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Corporate Office: 724.584.5500  Instant Access 24/7 (Parts and Service): 800.458.1960  Parts and Service: 814.437.6861
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LowRefrigerantPressureLED
Ifthecompressorsuctionpressuredropsbelowthesettingonthelowrefrigerantpressure
safety,thecompressorwillshutoff,thepumpwillremainrunning,andtheLowRefrigerant
PressureLEDwillbeilluminated.PressingtheAlarmResetbuttonwillresettheLowRefrigerant
Pressurefault,aslongastherefrigerantpressurehasrisenbackupabovethesafety'scutout
level.
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ProgramModeLED
TheProgramModeLEDwillflashyellowwhileintheprogrammingmenu.
SetpointTemperatureDisplay
TheSetpointTemperatureDisplaynormallydisplaysthesetpointtemperature.Anindicator
lightinthelowerrightcornerofthisdisplayareashowsthetemperatureunitofmeasurethat
hasbeensetintheprogrammingmenu.Whenthedisplayissetto°Ftherewillbeagreen
indicationlight,whenthedisplayissetto°Ctherewillbenogreenindicatinglight.Seethe
ProgramMenusectiontochangethetemperaturescaleunitsofmeasure.
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Inadditiontodisplayingthesetpointtemperature,theSetpointTemperatureDisplayshows
otheralarmandprogramminginformation.
ActualTemperatureDisplay
TheActualTemperatureDisplaydisplaystheselectedreturnorsupplytemperature.An
indicatorlightbelowthedisplayareashowsthetemperature(returnorsupply)displayed.
Whenthedisplayissettosupplytemperaturetherewillbeanorangeindicatinglight,whenthe
displayisdisplayingreturntemperaturetherewillbenoorangeindicatinglight.Totoggle the 
Actualtemperaturedisplayfromsupplytoreturntemperature,pressandreleasethe
Display/Programbutton.ThedisplaywillreturntothedefaultSupplytemperature
automaticallyafter5secondswithoutabuttonpress.Thedisplaywillreturntothedefault
SupplyTemperatureautomaticallyafter5seconds.
Inadditiontodisplayingtheselected
temperature,thedisplayshowsotheralarmandprogramminginformation.
ProgramMenu
Theprogrammenuprovidesaccesstoanumberofcontroluser‐adjustableparametersand
featureenable/disablecontrol.Accesstheprogrammenuispasswordprotectedtoprevent
unintendedalterationtotheprogramsettingsandparameters.
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Toaccesstheprogrammingmenutheunitmustbeinastoppedstate.Oncetheunit
isstopped,
pressandholdingtheDisplay/Programbuttonfor5continuousseconds.TheProgramMode
LEDwillflashyellowandthedisplaywillshow“PAS”ontheActualdisplayand"000"onthe
Setpointdisplay.Theunitisnowreadytohavethepasswordentered.Fromthefactory,the
passwordissetto“000”.UsetheUporDownarrowbuttonstoincreasethenumericvalueon