Whirlpool KUIA15PLL*11 manual Operational Modes, ICE Making Cycle, Electrical System, Water System

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OPERATIONAL MODES

There are four main operational modes for the

During the Freeze mode, some of the hot gas

ice maker (more detailed operation is found in

that is in the condenser accumulating tube,

the flow chart on page 6-5):

condenses to a liquid, and remains in the ac-

• Freeze

cumulating tube.

During the later stages of the Freeze mode, as

• Harvest

• Clean

the ice slab forms on the evaporator freezing

plate, some of the refrigerant passing through

• Service (Diagnostics)

the evaporator will not evaporate into a gas, but

ICE MAKING CYCLE

will remain a liquid. This liquid refrigerant will

In addition, there are three possible “Off” cycles

settle in the accumulator, while the refrigerant

for the ice maker. They occur when:

vapor is sucked off through the suction tube at

1. The bin is full of ice and the LED is il-

the top of the accumulator. This accumulated

liquid refrigerant will eventually be directed to

luminated “ON/OFF” (Idle mode).

the evaporator to quickly warm the evaporator

2. The "On/OFF” control switch has been

plate during the Harvest mode.

held for three seconds. The ON/OFF

NOTE: It is very important that the accumulator

LED will go out.

is not tilted out of a horizontal position. If moved,

3. The Holiday Mode.

it could cause compressor failure.

Electrical System

Water System

Line Voltage is supplied to the electrical control

The water recirculating pump moves the water

switches and the primary side of the step-down

from the reservoir pan up to the distributor,

dual transformer. The dual transformer reduces

where it flows out over the evaporator freez-

120 VAC to 8.75 VAC for the cutter grid and

ing plate.

the bin light and 12 VAC for the drain and recir-

Water that does not freeze on the evaporator

culating pumps. The electronic control board

directs 12 VAC to the water recirculating and

plate runs off the front edge, and falls back into

reservoir drain pumps, and 120 VAC to the

the reservoir, where it is recirculated back to

hot gas solenoid, condenser fan motor, and

the water distributor.

compressor. The measured fill water valve will

As the ice slab forms, the minerals in the water

always have 120 VAC on the BK and WH wires

are on the surface of the ice. The water flow-

and 14 VDC on the OR/WH and BK/RD wires.

ing over the top of the ice slab washes these

An evaporator thermistor supplies temperature

minerals back into the water reservoir pan. The

information to the electronic control to determine

water continues to recirculate until the water

when to terminate the harvest cycle.

level in the reservoir drops to the bottom of the

Refrigeration System

water level sensor. When the water level in the

reservoir drops below the sensor, the control

The hot gas refrigerant, under high pressure, is

terminates the freeze mode and initiates the

forced through the condenser, where it changes

harvest mode.

into a liquid, and flows through the drier and

The control signals the measured fill valve to fill

capillary tube into the evaporator. Under low

to the selected water level setting. The mea-

pressure in the evaporator, the liquid refrigerant

sured fill valve uses a flow meter to accurately fill

absorbs heat from the water flowing over the

to the correct volume. Thin Ice uses 32 ounces

evaporator as the refrigerant evaporates into

(954cc), Normal Ice 37 ounces (1106cc), and

a gas. As a low pressure gas, the refrigerant

Thick Ice 42.5 ounces (1258cc).

flows back through the suction line of the heat

 

exchanger, to the compressor.

 

3-5

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Contents Design Goals and Objectives ForwardTable of Contents Diagnostics & Troubleshooting General ICE Maker SafetySerial Number Kitchenaid Model & Serial Number DesignationsModel Number Model & Serial Number Label Location Specifications Electrical Supply Requirements Installation InformationWater Supply and Drain Connections Connecting the Water LineModels Connecting the DrainGravity Drain System Drain Pump System On Some Models Connecting the DrainRefrigeration System Theory of OperationOperating Systems Water System Water System Component Locations Electrical System ICE Making Cycle Operational ModesElectrical System Water SystemClean Mode Harvest ModeDiagnostic Mode Entering and Navigating Manual DiagnosticsDiagnostic Chart Holiday ModeModels with Internal Drain Pumps 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 dual transformer Removing the Water Recirculation Pump To remove the water level sensor Removing the Reservoir Drain Pump Water Level SensorTo remove reservoir drain pump Removing the Condenser FAN Motor Tubing Internal Drain Pump Condenser Fan Blade Removing the Evaporator Screw Water Trough Remove the Permagum from the liner channel Reassembly Notes Removing the Measured Fill Water 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 To remove the door gasket Removing the ICE Maker Door & Gasket18˝ Models Remove the two screws from the bottom door cap Door Hinge Hinge Pin Channel Support Reassembly Notes BIN Thermistor Component TestingDual Transformer Cutter GridReservoir Drain Pump Water Recirculation PumpCondenser FAN Motor Water Level SensorHOT GAS Valve Solenoid Measured Fill Water ValveTo test the relay To test the compressor windingsWater and ITS Effect on Making ICE Diagnostics & TroubleshootingEffect on ICE Quality Effect on ICE MakerTroubleshooting Chart Roblem Robable C aus e Es t P roc edure-Ac tion Other models Overview Diagnostic Flow Charts for ICE Maker Control BoardPage Page Page Harvest Bin Not Full Harvest Bin Full Page Page Page Page Wiring Diagram Wiring Diagram & Strip CircuitsStrip Circuits Flush ModeICE Making Mode Overload Page Tech Tips Cleaning the ICE MakerCleaning Evaporator Plate Cleaning Solution On Pad For Product Specifications and Waranty Information Call Product Specifications Warranty Information SourcesFor Technical Information and Service Pointers For Technical Assistance While AT the CUSTOMER’S Home Call

KUIA15PLL*11, KUIA18PNL*11, KUIA15NLH*11, KUIA15PRL*11, KUIA15NRH*11 specifications

Whirlpool is renowned for its innovative and reliable kitchen appliances, and the KUIA series of undercounter ice makers stands as a testament to this reputation. Models such as the KUIA18NNJ*11, KUIA15NRH*11, KUIA15PRL*11, KUIA15NLH*11, and KUIA18PNL*11 offer a blend of style, functionality, and cutting-edge technology designed to enhance your culinary experience.

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In conclusion, the Whirlpool KUIA18NNJ*11, KUIA15NRH*11, KUIA15PRL*11, KUIA15NLH*11, and KUIA18PNL*11 models exemplify the brand's commitment to quality and innovation. With robust ice production capabilities, stylish designs, energy-efficient features, and user-friendly controls, these undercounter ice makers are an outstanding choice for any modern kitchen, ensuring that you are always prepared to serve drinks chilled and ready for enjoyment.
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