36 VCSeriesManual
TemperatureOpƟonsWithoutaTemperatureController
Thedefaulttemperatureseƫngforthisapplianceinstalledwithoutatemperaturecontrolleris120°F(49°C).If
desired,thetemperatureseƫngcanbechangedto140°F(60°C)byadjustmentofaswitch.
IntheSW1Dipswitch(tanswitches),setswitch5toONtoobtain140°Fwatertemperatureseƫng.Setswitch
5toOFF(default)toobtain120°Fwatertemperaturese
ƫng.Ifatemperaturecontrollerisinstalled,then
switch5hasnoeīectontemperatureseƫngs.
SeƫngControllertoMute
OntheMCͲ91Ͳ2toeliminatethebeepswhenkeysarepressedortoturnthebeepsbackon,pressandholdboth
theupanddownbuƩonsunƟlabeepisheard(approximately5seconds).
LockingtheController
TheMCͲ91Ͳ2controllercanbelockedbypressingthePrioritybuƩonandtheupbuƩontogetherfor5seconds.
Abeepwillsoundconfirmingthatthecontrollerislocked.Thedisplaywillalternatelyshow“LOC”,the
temperatureseƫng,andadiagnosƟccodeifone
hasbeenacƟvated.Allofthecontrollersinthesystemare
alsolocked.
Tounlockthecontrollerpress thePrioritybuƩonandtheupbuƩontogetherfor5seconds.
ToDisplayDiagnosƟcInformaƟon
TodisplaythemostrecentdiagnosƟcinformaƟoncodespressandholdthe“On/Oī”buƩonfor2secondson
theMCͲ91Ͳ2controller.Whileholdingthe“On/Oī”buƩonpres stheupbuƩon.Thelast9diagnosƟccodeswill
flashoneaŌer
theother.Toexitthismodepressthe“On/Oī”andupbuƩonasbefore.
ToenterorexitthemaintenancemonitorinformaƟonmodepressandholdthedownbuƩonfor2secondsand
withoutreleasingitpresstheON/OFFbuƩon.
Toobtainthewaterflow
ratepresstheupordownbuƩonsunƟl“01”displays.Thewaterflowratewillthen
appear.Forexample“58”means5.8gal/min.
ToobtaintheoutgoingwatertemperaturepresstheupordownbuƩonsunƟl“02”displays.Thetemperature
willappearindegreesFahrenhei t.
DiagnosƟcCodes
ThiswaterheaterisdesignedtodisplaydiagnosƟccodes.IfthereisapotenƟaloperaƟonconcernrefertothe
codeandremedyonthenextpage.
Data Unit
Waterflowrate 0.1gal/min
Outgoingwatertemperature DegreesFahrenheit
No.
01
02