Hypertherm Koolant Koolers N-Series - 9 Troubleshooting; Alarm List; Table 9: Alarm List

 Troubleshooting‐AlarmList 
44
9 Troubleshooting
9.1 AlarmList
Ifthechillerhasencounteredawarningorfaultitwillbedisplayedin thealarmmenu(refertosection8.1
Navigationtoaccessthismenu).
Table9:AlarmList
Alarm
Code
AlarmName Type Description CorrectiveAction
AL*02 cPCOeofflinealarm
Auto
reset
Thecontroller’sI/Omodulehas
beendisconnectedorhasthe
incorrectDIPswitchsettings.
 VerifythattheI/Omodule(301PLC)isconnected.
 VerifythattheI/OmoduleDIPswitchsettingsare
correct(refertoTable15inAppendixC).
AL*017
PumpOverload
Fault
Auto
reset
Themanualmotorprotectorfor
theprocessorrecirculationpump
hastripped.
 Verifythatfluidcircuitsareclearfrom
obstructions(debris,hosekinks,cloggedfilters,
closedvalves,etc.)
 Resetthemanualmotorprotectors(122MSand
124MS).
AL*018
PhaseMonitor
Fault
Auto
reset
Thereisaphasereversal,phase
loss,orphaseimbalanceonthe
mainpowersupplyingthechiller
 Ifthe“R”LEDisAMBERthemainpowerisphased
properly.Ifthe“R”LEDisunlitthereisaphase
reversal.Swapanytwoofthethreemainpower
supplyleads.
 Ifthe“Un”LEDisGREENthemainpoweris
balanced.Ifthe“Un”LEDisunlitthereisaphase
lossorimbalance.Measuretheincomingmain
powertocheckforaphaselossandtheninspect
thepowerdistributioncircuitbreakers.Ifaphase
imbalance>10%existsapowerconditionermay
benecessaryforthemainpowersupply.
AL*019 HighPressureFault
Auto
reset
Themaximumpressureforthe
refrigerationcircuithasbeen
exceededandthehighpressure
switchhastripped.
 Verifythatthedoorsandairfilter(s)havebeen
installed.
 Verifythattheenvironmentalandclearance
conditionsspecifiedinsections5.2.1,5.2.2,and
5.2.5havebeenmet.
 Re
settherefrigerationhighpressureswitch(refer
toSection9.3)andrestartthechiller.
AL*020
Fan/CompOtemp
Fault
Auto
reset
Fan(s)and/orcompressor(s)
internalthermaloverloadshave
tripped.
 Verifythatthedoorsandairfilter(s)havebeen
installed.
 Verifythechillerisoperatingwithinthespecified
environmentconditions(refertoSection5.2.1).
 Verifythatairintakeandexhaustclearanceshave
beenadheredto(
refertoSection5.2.5).
AL*021
HeaterSwitch
Tripped
Auto
reset
Theheaterlimitswitchhastripped
becausethetanktemperaturehas
exceeded140°F(60°C)
 ContactDTSService

AL*022 MultipleOnSignals
Auto
reset
Multiplesignalstryingtoturnon
thechiller.Specificallythe 
Local/Off/Remoteswitchisinthe
positionandtheunitis
receivingconflictingstart/stop
signalsbetweenModbusandthe
chillerstart/stopinterlock.
 Checktheconnectivitytotheplasmacutterto
ensurethechillerisreceivingremotestart/stop
si
gnalsthroughthephysicalinterlockorModbus
butnotboth.
AL*023
FluidOverTemp
Fault
Auto
reset
Processwateroutlettemperature
is>10°F(5.6°C)aboveitssetpoint.
 Verifythatthedoorsandairfilter(s)havebeen
installed.
Hypertherm, Inc. Part Number: 810540