Manuals / Whirlpool / Kitchen Appliance / Ice Maker

Whirlpool KUIA15NRH11, KUIA18NNJ11, KUIA15PRL*11 manual Theory Of Operation, Operating Systems

Models: KUIA15PLL11 KUIA18PNL11 KUIA15NLH11 KUIA15PRL11 KUIA15NRH11 KUIA18NNJ11

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THEORY OF OPERATION

OPERATING SYSTEMS

There are three operating systems in the ice maker:

•Refrigeration System

•Water System

•Electrical System

REFRIGERATION SYSTEM

The refrigeration system in the ice maker is very similar to the system used in other refrig- eration appliances. The refrigerant used in this unit is R134a.

There are two very important additions to the refrigeration system in the ice maker: the Hot Gas Valve, and the Condenser Accumulator Tube. The components operate as follows:

•Hot Gas Valve - Allows high pressure refrigerant gas to bypass the condenser and ﬂow through the condenser accu- mulator tube.

•Condenser Accumulator Tube - Hot gas pushes liquid refrigerant through the accumulator tube into the evaporator, helping to evenly heat the evapora- tor plate so that the ice slab releases quickly and evenly.

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Whirlpool KUIA15NRH*11, KUIA18NNJ*11, KUIA15PRL*11, KUIA15NLH*11, KUIA18PNL*11 manual Theory Of Operation, Operating Systems

Contents

KAR-19 2007 DESIGN 18θ AUTOMATIC ICE MAKERSJOB AID TECHNICAL EDUCATIONGOALS AND OBJECTIVES FORWARDPage TABLE OF CONTENTSDIAGNOSTICS & TROUBLESHOOTING GENERAL ICE MAKER SAFETYDANGER MODEL NUMBER KITCHENAID MODEL & SERIAL NUMBER DESIGNATIONSSERIAL NUMBER The Model/Serial Number label location is shown below MODEL & SERIAL NUMBER LABEL LOCATIONModel & Serial Number Location SPECIFICATIONS ELECTRICAL SUPPLY REQUIREMENTS INSTALLATION INFORMATIONPlug into a grounded 3 prong outlet. Do not remove ground prong Do not use an adapter Do not use an extension cordCONNECTING THE WATER LINE WATER SUPPLY AND DRAIN CONNECTIONSGravity Drain System CONNECTING THE DRAINSIDE VIEW 15 Models 18 Models Use two or more people to move and install ice maker Connecting the DrainDrain Pump System On Some Models Plug into a grounded 3 prong outlet. Do not remove ground prongOPERATING SYSTEMS THEORY OF OPERATIONWATER SYSTEM Water Distributor Evaporator Water Return Tube Manual Drain WATER SYSTEM COMPONENT LOCATIONSDrain Overﬂow Water Valve Outlet TubeELECTRICAL SYSTEM ICE MAKING CYCLE OPERATIONAL MODESElectrical System Water SystemElectrical System Entering and Navigating - Manual DiagnosticsRefrigeration System Water SystemERROR DISPLAYS Diagnostic ChartHOLIDAY MODE Overﬁll Contact Full Contacts Connector Hose Contains Screen Washer MODELS WITH INTERNAL DRAIN PUMPSPump Inlet Contacts Sense Continuity Through The Water Vent OutletCOMPONENT LOCATIONS COMPONENT ACCESSLight Switch SwitchPlug into a grounded 3 prong outlet. Do not remove ground prong 1. Unplug ice maker or disconnect power 2. Open the ice maker doorDo not use an adapter Do not use an extension cord 6. To remove the bin thermistorContinued on the next page 8. To remove the evaporator thermistorWater Distributor Water Hose Tab Water Distributor 9. To remove the water distributorElectrical Shock Hazard Disconnect power before servicing REMOVING THE ELECTRONIC CONTROL HOUSING COMPONENTSReplace all parts and panels before operating Failure to do so can result in death or electrical shockElectrical Shock Hazard Connect green ground wire to ground terminal a Disconnect the six pin wire connector from harness9. To remove the light switch or push-but- ton switch assembly 8. To remove the dual transformerElectrical Shock Hazard Disconnect power before servicing REMOVING THE WATER RECIRCULATION PUMP2-Wire Connector Water Fill Tube Recirculation Pump Outlet Tube Replace all parts and panels before operatingElectrical Shock Hazard Disconnect power before servicing REMOVING THE RESERVOIR DRAIN PUMP WATER LEVEL SENSORReplace all parts and panels before operating Failure to do so can result in death or electrical shockElectrical Shock Hazard Disconnect power before servicing REMOVING THE CONDENSER FAN MOTORReplace all parts and panels before operating Failure to do so can result in death or electrical shockContinued on the next page 12. Disconnect the wire connector from the condenser fan motorCondenser Fan Motor Screw 1 of Condenser Fan BladeElectrical Shock Hazard Disconnect power before servicing REMOVING THE EVAPORATORReplace all parts and panels before operating Failure to do so can result in death or electrical shockContinued on the next page 10. 18˝ Models Only Remove the six screws from the counterbalance plate and remove the plate from the rear of the unitand pull the free end of the water line up REASSEMBLY NOTES Electrical Shock Hazard Disconnect power before servicing REMOVING THE MEASURED FILL WATER VALVEReplace all parts and panels before operating Failure to do so can result in death or electrical shockElectrical Shock Hazard Disconnect power before servicing REMOVING THE HOT GAS VALVE & SOLENOIDReplace all parts and panels before operating Failure to do so can result in death or electrical shockElectrical Shock Hazard Disconnect power before servicing REMOVING THE CONDENSERReplace all parts and panels before operating Failure to do so can result in death or electrical shockElectrical Shock Hazard Disconnect power before servicing REMOVING THE COMPRESSORReplace all parts and panels before operating Failure to do so can result in death or electrical shockFailure to do so can result in death or electrical shock Electrical Shock Hazard Connect green ground wire to ground terminalClip On Stud Compressor Filter/DrierElectrical Shock Hazard Disconnect power before servicing REMOVING THE INTERNAL DRAIN PUMPReplace all parts and panels before operating Failure to do so can result in death or electrical shock2. To remove the door gasket REMOVING THE ICE MAKER DOOR & GASKET 15˝ MODELSTop Door Screw Door Track Door GasketContinued on the next page REMOVING THE ICE MAKER DOOR & GASKET 18˝ MODELSTop Grille Screws 1 of Bracket Hinge Bottom Hinge Spring Screw4. Remove the two screws from the bottom door cap Continued on the next page 10. Slide the bottom door cap off the channel supports4-26 REASSEMBLY NOTESElectrical Shock Hazard Disconnect power before servicing COMPONENT TESTINGEVAPORATOR THERMISTOR Replace all parts and panels before operatingCUTTER GRID Electrical Shock Hazard Disconnect power before servicingDUAL TRANSFORMER Replace all parts and panels before operatingWATER RECIRCULATION PUMP Electrical Shock Hazard Disconnect power before servicingRESERVOIR DRAIN PUMP Replace all parts and panels before operatingWATER LEVEL SENSOR Electrical Shock Hazard Disconnect power before servicingCONDENSER FAN MOTOR Replace all parts and panels before operatingMEASURED FILL WATER VALVE Electrical Shock Hazard Disconnect power before servicingHOT GAS VALVE SOLENOID Replace all parts and panels before operatingCOMPRESSOR, OVERLOAD PROTECTOR, & RELAY Electrical Shock Hazard Disconnect power before servicingReplace all parts and panels before operating Failure to do so can result in death or electrical shockWATER AND ITS EFFECT ON MAKING ICE DIAGNOSTICS & TROUBLESHOOTINGINGREDIENT EFFECTTROUBLESHOOTING CHART s haped s lab C us tomer ins tructionC ompres s or is not T es t compres s or, relayother models Service LED on somemodels or Off LED on OVERVIEW DIAGNOSTIC FLOW CHARTS FOR ICE MAKER CONTROL BOARDPage Page evaporator thermistor Harvest Bin Not Full Harvest Bin Full Idle Mode Time in this mode is dependent on the temperature at the bin thermistor Failure Mode This mode will last indeﬁnitely until the failure is corrected. The Service Button, not on all models will reset the failure mode Clean Mode 70 minutes The Clean Mode may only be selected while the ice maker is turned off at the user interface Page WIRING DIAGRAM WIRING DIAGRAM & STRIP CIRCUITSMEASURED FILL WATERFLUSH MODE STRIP CIRCUITSICE MAKING MODE HARVEST MODE CLEAN MODEOverload Page TECH TIPS CLEANING THE ICE MAKERElectrical Shock Hazard Disconnect power before servicing Replace all parts and panels before operatingIMPORTANT Use the entire bottle to clean the unit IN THE UNITED STATES PRODUCT SPECIFICATIONS AND WARRANTY INFORMATION SOURCESFOR ROPER PRODUCTS THE TECHNICAL ASSISTANCE LINE