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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Troubleshooting
Problem PossibleCause Solution
Compressorwillnot
start
Compressoroverload Checksupplyvoltage,amperageofeachleg,
contactorandwiring,andoverloadsetpoint
Compressorcontactor Replaceiffaulty
Compressorfailure ContactCustomerServiceforassistance
Pumpwillnotstart Pumpoverload Checksupplyvoltage,amperageofeachleg,
contactorandwiring,andoverloadsetpoint
Pumpcontactor Replaceiffaulty
Pumpfailure Replaceiffaulty
Lowrefrigerant
pressure
Lowrefrigerantcharge Contactrefrigerationservicetechnician
Refrigerantleak Contactrefrigerationservicetechnician
Lowrefrigerationpressuresensor Checkforproperrange,replaceiffaulty
Highrefrigerant
pressure
Dirtyairfilters(air‐cooledunitsonly) Cleanfilters
Airflowobstruction(air‐cooledunitsonly) Makesurechillerisinstalledinaccordance
withrecommendationsinthismanual
Highambientairtemperature(air‐cooledunits
only)
Ambienttemperaturemustbereduced
below110°F(43°C)
Condenserfanmotor(air‐cooledunitsonly) Replaceiffaulty
Condenserfancyclingcontrol(air‐cooledunits
only)
Confirmproperoperation,replaceiffaulty
Pluggedcondenser(water‐cooledunitsonly) Cleanouttubes
Insufficientcondenserwaterflow(water‐cooled
unitsonly)
Makesurechillerisinstalledinaccordance
withtherecommendationsofthismanual
Highcondenserwatertemperature(water‐cooled
unitsonly)
Condenserwatertemperaturemustbe
reducedbelow100°F(38°C)
Condenserwaterregulatingvalve Checksetting,replaceiffaulty
Refrigerantcircuitovercharged Contactrefrigerationservicetechnician
Highrefrigerantpressuresensor Replaceiffaulty
Freezestat Lowflowthroughevaporator Adjustflowtoproperlevel
Freezestatcontrolmodule Checkforpropersetting(ProtectedSetting)
Freezestatsensor Replaceiffaulty
Lowpumpdischarge
pressure
Pumprunningbackwards Switch2legsoftheincomingpower
Pumppressuregauge Replaceiffaulty
Pumpfailure Replaceiffaulty
Excessiveflow Reduceflow
Highpumpdischarge
pressure
Closedvalvesinprocesspiping Openvalves
Obstructioninpipingorprocess Removeobstruction
CloggedY‐strainer Cleanstrainer
Pressuregauge Replaceiffaulty
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