Electrolux E23CS75DSS0 - Compressor Run Circuit; Compressor Operating Characteristics; Compressor Electrical Check; Compressor Electrical Components for VCC Models

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Compressor Run Circuit
Whentheself-heatingsolidstaterelayhasreached
sufcienttemperature,itwillabruptlychangefrom
lowresistance(3-12ohms)toveryhighresistance
(10-20Kohms)and,ineffect,switchesoffthestart
windings.
Therelaynolongershuntstheruncapacitor.
Theruncapacitorisnowinserieswiththestart
windings.Theonlypurposeoftheruncapacitor
istoimprovecompressoroperatingefciency,
whichitdoesbycorrectingthepowerfactorofthe
compressormotor(SeeFigureC4).
Figure C4
Compressor Operating
Characteristics
•  Whenthecompressorelectricalcircuitis
energized,thestartwindingcurrentcauses
therelaytoheatandswitchoffthestart
windingcircuit.
Section C - Electrical Components
NOTE
Therelaywillswitchoffthestartwindingcircuit
eventhoughthecompressorhasnotstarted
(aswhenattemptingtore-startaftermomentary
powerinterruption).
•  Theoverloadprotectorisdesignedand
calibratedtoopenthecompressorelectrical
circuitwithlockedrotorrunwindingcurrent
on.
•  Withanopenrelay,thecompressorwillnot
startsincethereislittleornocurrenttothe
startwindings.Theoverloadprotectorwill
openduetohighlockedrotorrunwinding
current.
•  Withashortedrelayorcapacitor,the
compressorwillstart,andtheoverload
protectorwillopen.
•  Withanopenorweakcapacitor,the
compressorwillstartandrun.The
compressor,however,willbeoperatingat
reducedefciencyofenergyusage.
Compressor Electrical Check
Ifthecompressorwillnotrun,makeavoltage
checkacrossthepowerleadterminalsonthePTC
Relay.(SeeFigureC4.)
Thevoltmetershouldshowlinevoltageifthe
thermostatknobisinnormaloperatingpositionand
notintheOFFposition.Ifthischeckdoesnotshow
alivecircuit,thecontrolthermostatanddefrost
timerwiringshouldbecheckedforlooseand/or
brokenconnections.
Acontrolthermostatcheckcanbemadebyusing
apieceofwireasatemporarybridgeacrosstwo
thermostatterminals.Ifthecompressorstartsand
runswiththebridge,thecontrolthermostatisat
faultandshouldbereplaced.
Ifthevoltagecheckshowspowersupplyatthe
PTCRelayterminals,useatestcordtocheckthe
compressor.
Ifthecompressordoesnotstartandrunwiththe
testcord,checkthelinevoltagetoseeifthereis
morethan10%variationfromtheratedvoltage.If
voltageiscorrectandthecompressorwillnotstart
andrun,replacethecompressor.
Ifthecompressorstartsandrunswiththetestcord,
replacethePTCRelay.
Compressor Electrical
components and Circuits for
Models with Variable Capacity
Compressor
Thenewseriesofveryhighefciencycompressor
isequippedwithanewelectricalpowerinput
electroniccontroltoreplacethestandardstart
package.