KitchenAid KUIS185J, KUIA15NLH, KUIA18NNJ, KUIA18PNL manual Harvest Cycle, Diagnostics / Clean Cycle

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HARVEST CYCLE

Electrical System

When the set temperature of the evaporator thermistor is reached, it signals the electronic control to terminate power to the condenser fan, and the water recirculating pump. Power is then supplied to the hot gas valve and water fill valve solenoids.

If the evaporator thermistor is unplugged, the control defaults to the maximum freeze and harvest times.

Refrigeration System

The hot gas valve opens, allowing high pres- sure refrigerant gas to bypass the condenser, and flow through the condenser accumulating tube. The hot gas pushes the liquid refrigerant that has accumulated in the accumulator tube up into the evaporator. The hot liquid refriger- ant evenly heats the evaporator plate so that the ice slab releases quickly and evenly.

The ice slab, when released, slides off of the evaporator plate onto the cutter grid.

Water System

The water valve opens, allowing water to flow into the water reservoir pan. As the reservoir fills, the mineral-laden water from the previous Ice Making cycle, is flushed out the overflow tube.

As a result of the hot gas flow and the ice sliding off the evaporator plate, the evaporator tem- perature begins to rise. When the evaporator thermistor reaches the set temperature (6.5°F), the unit switches to the Ice Making cycle. This cycling between Ice Making and Harvest, con- tinues until the ice bin is full.

The electronic control board controls the vari- ous components and systems in the ice maker for each of the Ice Making and Harvest cycles.

When the ice maker’s service control switch is in the “On” position, and the bin is not full of ice, the evaporator thermistor determines whether the unit will be in the Ice Making, or the Harvest cycle.

If the thermistor is unplugged from the control board, the unit will cycle using maximum freeze and harvest times.

DIAGNOSTICS / CLEAN CYCLE

Electrical System

Power is supplied to the electrical components through the service control switch.

The electronic control board controls the vari- ous components and systems during the Diag- nostics/Clean cycle. During the first 25 sec- onds of the cycle, each component will operate for 5 seconds.

For the order of the components cycled, see the flow chart on page 6-5.

Water System

When the service control switch is in the ‘’Clean” position, the water recirculating pump circu- lates the cleaning solution that has been added to the reservoir, up to the water distributor, across the evaporator, and back into the reser- voir, where it is recirculated.

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Contents 18″ Automatic ICE Makers Goals and Objectives ForwardTable of Contents Wiring Diagram & Strip Circuits Safety First Electrical Power Supply & Grounding RequirementsGeneral Electrostatic Discharge ESD Sensitive Electronics Serial Number Model NumberYear of Introduction Model & Serial Number Location Model & Serial Number Label LocationSpecifications Kitchenaid ICE Maker Warranty Page Installation Information Electrical Supply RequirementsRecommended Grounding Method Water Supply and Drain Connections Connecting the Water LineGravity Drain System Connecting the DrainDrain Pump System On Some Models Theory of Operation Operating SystemsRefrigeration System Water System Electrical System ICE Making Cycle Operational CyclesElectrical System Refrigeration SystemHarvest Cycle Diagnostics / Clean CycleNEW ICE Maker Control Board #6100499 Models with Internal Drain Pumps Page Component Locations Component AccessTo remove the cutter grid To remove the bin thermistorOn the next To remove the evaporator thermistorTo remove the water distributor To remove the electronic control board Removing the Electronic Control Housing ComponentsTo remove the cutter grid transformer Removing the Water Recirculation Pump Removing the Condenser FAN Motor Disconnect Tubing Internal Drain Pump Nut Marking On Fan Removing the Evaporator Screw Water Trough Remove the Permagum from the liner channel Reassembly Notes Removing the Water Inlet Valve To remove the hot gas valve Removing the HOT GAS Valve & SolenoidRemoving the Condenser Removing the Compressor Pull the two clips off the rear studs of the compressor Removing the Internal Drain Pump Only on Some Models To remove the door gasket Removing the ICE Maker Door & Gasket18″ Models Bottom Door Cap Screws Door Hinge Hinge Pin Channel Support Reassembly Notes Page BIN Thermistor Component TestingCutter Grid Transformer Cutter GridCondenser FAN Motor Water Recirculation PumpHOT GAS Valve Solenoid Water Inlet Valve SolenoidTo test the compressor windings COMPRESSOR, Overload PROTECTOR, & RelayTo test the relay Pushbutton Switch Assembly Page Water and ITS Effect on Making ICE Diagnosis & TroubleshootingEffect on ICE Quality Effect on ICE MakerProblem Probable Cause Test Procedure-Action Troubleshooting ChartWill not make ice Defective bin thermistor Overview Diagnostic Flow Chart for ICE Maker Control Board #6100499Flush Mode 5 minutes Idle Mode Page Unit leaves Freeze Mode Warmer Ambients Page Reservoir must be drained prior to restarting the unit Page Wiring Diagram Wiring Diagram & Strip CircuitsICE Making Mode Harvest ModeStrip Circuits Last 47 Minutes of DIAGNOSTICS/CLEAN Mode First 25 Seconds of DIAGNOSTICS/CLEAN ModePage Cleaning the ICE Maker Cleaning Evaporator PlateTech Tips Cleaning Solution On Pad Thick Thin Adjusting the ICE ThicknessPage Product Specifications Warranty Information Sources
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KUIS185J, KUIA15NRH, KUIS18NNJ, KUIA18PNL, KUIA15NLH specifications

KitchenAid has long been synonymous with quality in the realm of kitchen appliances, and its line of undercounter ice makers, specifically the models KUIA18NNJ, KUIV18NNM, KUIS18PNJ, KUIA18PNL, and KUIS18NNJ, exemplifies the brand's commitment to innovation and functionality. These ice makers are designed to deliver a reliable supply of ice without taking up valuable space in your kitchen.

The KUIA18NNJ and KUIV18NNM models both showcase a sleek stainless steel exterior which not only adds a modern aesthetic to any kitchen but also ensures durability. These models come equipped with advanced insulation technology that helps keep the ice frozen for extended periods, even during power outages. One key feature is their ability to produce clear, restaurant-quality ice, making them perfect for entertaining guests or simply enjoying a cold beverage at home.

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Moreover, the KUIS18NNJ model features a built-in water filtration system that enhances the quality of the ice produced by filtering out impurities, ensuring that every cube is clear and refreshing.

With quiet operation and low vibrations, these ice makers are perfect for any living environment, making them a great addition to any home. Whether hosting parties or simply enjoying a quiet evening, KitchenAid's undercounter ice makers offer a perfect blend of practicality, style, and advanced technology to meet the modern consumer's needs.
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