Whirlpool KUIA15NRH'11, KUIA18NNJ'11, KUIA15PLL'11, KUIA18PNL'11, KUIA15NLH'11 User Manual

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KAR-19

TECHNICAL EDUCATION

2007 DESIGN

15θ & 18θ AUTOMATIC

ICE MAKERS

KUIA15NRH*11

KUIA18NNJ*11

KUIA15PRL*11

KUIA18PNL*11

KUIA15NLH*11

 

KUIA15PLL*11

Intoductory Models

* Denotes Color Designation

 

JOB AID 4317408

FORWARD

This KitchenAid Job Aid “2007 Design 15" & 18" Automatic Ice Makers” (Part No. 4317408), provides the In-Home Service Professional with information on the installation, operation, and service of the 2007 Design 15" & 18" Automatic Ice Makers. For specific information on the model being serviced, refer to the “Use and Care Guide,” or “Tech Sheet” provided with the ice maker.

The Wiring Diagram and Strip Circuits used in this Job Aid are typical and should be used for training purposes only. Always use the Wiring Diagram supplied with the product when servicing the ice maker.

GOALS AND OBJECTIVES

The goal of this Job Aid is to provide detailed information that will enable the In-Home Service Professional to properly diagnose malfunctions and repair the KitchenAid 2007 Design 15" & 18" Automatic Ice Makers.

The objectives of this Job Aid are to:

Understand and follow proper safety precautions.

Successfully troubleshoot and diagnose malfunctions.

Successfully perform necessary repairs.

Successfully return the ice maker to its proper operational status.

WHIRLPOOL CORPORATION assumes no responsibility for any repairs made on our products by anyone other than In-Home Service Professionals.

Copyright © 2007, Whirlpool Corporation, Benton Harbor, MI 49022

- ii -

TABLE OF CONTENTS

 

Page

GENERAL ..............................................................................................................................

1-1

Ice Maker Safety ................................................................................................................

1-1

KitchenAid Model & Serial Number Designations..............................................................

1-2

Model & Serial Number Label Location..............................................................................

1-3

Specifications.....................................................................................................................

1-4

INSTALLATION INFORMATION ............................................................................................

2-1

Electrical Supply Requirements .........................................................................................

2-1

Water Supply And Drain Connections................................................................................

2-2

THEORY OF OPERATION ....................................................................................................

3-1

Operating Systems.............................................................................................................

3-1

Operational Modes.............................................................................................................

3-5

Models With Internal Drain Pumps.....................................................................................

3-8

COMPONENT ACCESS ........................................................................................................

4-1

Component Locations ........................................................................................................

4-1

Removing The Bin Thermistor, Cutter Grid, Evaporator Thermistor,

 

& Water Distributor.........................................................................................................

4-2

Removing The Electronic Control Housing Components...................................................

4-5

Removing The Water Recirculation Pump .........................................................................

4-7

Removing The Reservoir Drain Pump & Water Level Sensor............................................

4-8

Removing The Condenser Fan Motor................................................................................

4-9

Removing The Evaporator ...............................................................................................

4-12

Removing The Measured Fill Water Valve .......................................................................

4-16

Removing The Hot Gas Valve & Solenoid .......................................................................

4-17

Removing The Condenser ...............................................................................................

4-18

Removing The Compressor .............................................................................................

4-19

Removing The Internal Drain Pump.................................................................................

4-21

Removing The Ice Maker Door & Gasket (15" Models) ...................................................

4-22

Removing The Ice Maker Door & Gasket (18" Models) ...................................................

4-23

COMPONENT TESTING ........................................................................................................

5-1

Bin Thermistor....................................................................................................................

5-1

Evaporator Thermistor .......................................................................................................

5-1

Cutter Grid..........................................................................................................................

5-2

Dual Transformer ...............................................................................................................

5-2

Water Recirculation Pump .................................................................................................

5-3

Reservoir Drain Pump........................................................................................................

5-3

Water Level Sensor............................................................................................................

5-4

Condenser Fan Motor ........................................................................................................

5-4

Measured Fill Water Valve ................................................................................................

5-5

Hot Gas Valve Solenoid .....................................................................................................

5-5

Compressor, Overload Protector, & Relay .........................................................................

5-6

- iii -

 

Page

DIAGNOSTICS & TROUBLESHOOTING .............................................................................

6-1

Water And Its Effect On Making Ice ...................................................................................

6-1

Troubleshooting Chart........................................................................................................

6-2

Diagnostic Flow Chart For Ice Maker Control Board .........................................................

6-5

WIRING DIAGRAM & STRIP CIRCUITS ...............................................................................

7-1

Wiring Diagram ..................................................................................................................

7-1

Strip Circuits.......................................................................................................................

7-2

TECH TIPS .............................................................................................................................

8-1

Cleaning The Ice Maker .....................................................................................................

8-1

Cleaning The Evaporator Plate .......................................................................................

8-1

- iv -

GENERAL

ICE MAKER SAFETY

Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on the appliance.

Always read and obey all safety messages.

This is the safety alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word

“DANGER” or “WARNING.” These words mean:

WARNING

DANGER

You can be killed or seriously injured if you don’t immediately follow instructions.

You can be killed or seriously injured if you don’t follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what can happen if the instructions are not followed.

1-1

KITCHENAID MODEL & SERIAL NUMBER DESIGNATIONS

MODEL NUMBER

MODEL NUMBER

K

UI A 15 NR H S 0

INTERNATIONAL SALES IND.

 

 

OR MARKETING CHANNEL

 

 

IF PRESENT

 

 

 

 

 

PRODUCT GROUP

 

 

K = KITCHENAID

 

 

 

 

 

PRODUCT IDENTIFICATION

 

 

UI = UNDERCOUNTER ICE MAKER

 

 

MERCHANDISING SCHEME

A = ARCHITECT

C = CULINARY & ARCHITECT II

S = STANDARD

O = OUTDOOR

V = SIGNATURE SERIES

CAPACITY / SIZE / SERIES / CONFIGURATION

15 = 15" WIDE

18 = 18" WIDE

FEATURES

PR = PUMP, RIGHT HAND DOOR SWING

PL = PUMP, LEFT HAND DOOR SWING

PN = PUMP, NON-REVERSIBLE DOOR SWING

NR = NON-PUMP, RIGHT HAND DOOR SWING

NL = NON-PUMP, LEFT HAND DOOR SWING

NN = NON-PUMP, NON-REVERSIBLE DOOR SWING

YEAR OF INTRODUCTION

H = 1999, J = 2000, K = 2001, L = 2002, S = 2006, T = 2007

COLOR CODE

B = BLACK, W = WHITE, S = STAINLESS

T = BISCUIT, M = METEORITE

ENGINEERING CHANGE (NUMERIC)

SERIAL NUMBER

SERIAL NUMBER

E T 04 54321

DIVISION RESPONSIBILITY

 

E = EVANSVILLE, IN

YEAR OF PRODUCTION

T = 2006, U = 2007

WEEK OF PRODUCTION

04 = 4th WEEK

PRODUCT SEQUENCE NUMBER

1-2

MODEL & SERIAL NUMBER LABEL LOCATION

The Model/Serial Number label location is shown below.

Model & Serial

Number Location

1-3

SPECIFICATIONS

AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97 to 127 VAC (rated 115VAC), 60 Hz Amperage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 Amps (max) Minimum Circuit Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Amps Ice Production per 24 hours (Approximate)

 

Ambient Temperature

Water Temperature

 

 

60 F (15 C)

 

 

 

 

 

 

 

 

 

70 °F (21°C)

46 lbs (21 kg)

 

 

 

 

 

 

80 °F (27°C)

47 lbs (21 kg)

 

 

90 °F (32°C)

40 lbs (18 kg)

 

 

 

 

 

 

100 °F (38°C)

40 lbs (18 kg)

 

 

 

 

 

 

110 °F (43°C)

38 lbs (17 kg)

 

 

 

 

 

Ice Shape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/4" x 3/4" Square Ice Thickness @ Normal Setting (Approximate) . . . . . . . . . . . . . . . . . . . . . . . . .0.32" (8.1 mm) Ice Thickness @ Thin Setting (Approximate) . . . . . . . . . . . . . . . . . . . . . . . . . . .0.28" (7.0 mm) Ice Thickness @ Thick Setting (Approximate). . . . . . . . . . . . . . . . . . . . . . . . . . 0.39" (9.9 mm) 15 Inch Storage Capacity (Approximate). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 lbs. (11.3 kg) 18 Inch Storage Capacity (Approximate). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 lbs. (15.9 kg) Exterior Dimensions (W x D x H). . . 15" or 18" x 24" x 34" (381 or 457.2 x 609.6 x 863.6 mm) Exterior Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stainless Steel or Painted Steel Net Weight. . . . . . . . . . . . . . . . . . . . . . . . . . 15" = 94 lbs. (42.6 kg) 18" = 123 lbs. (55.8 kg) Cube Thickness Control . . . . . . . . . . . . . . . . . . . Water Level Sensor & Control Board Setting Harvest Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermistor under Evaporator Bin Ice Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thermistor on side of Bin Refrigerant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R134a Ambient Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 to 100 F Water Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 to 120 psig Water Consumption (Dependent On Water Pressure) . . . . . . . . . . 6 to 10 gallons per 4 hours

1-4

INSTALLATION INFORMATION

ELECTRICAL SUPPLY REQUIREMENTS

WARNING

Electrical Shock Hazard

Plug into a grounded 3 prong outlet. Do not remove ground prong.

Do not use an adapter.

Do not use an extension cord.

Failure to follow these instructions can result in death, fire, or electrical shock.

Before you move the ice maker into its final location, it is important to make sure you have the proper electrical connection:

A115Volt,60Hz,AConly15or 20-amp electrical supply, properly grounded in accordance with the National Electrical Code and local codes and ordinances, is required.

It is recommended that a separate circuit, serving only the ice maker, be provided. Use a receptacle which cannot be turned off by a switch or pull chain.

IMPORTANT: If this product is connected to a GFCI (Ground Fault Circuit Interrupter) protected outlet, nuisance tripping of the power supply may occur, resulting in the loss of cooling. Ice quality may be affected. If nuisance tripping has occurred, and if the condition of the ice appears poor, dispose of it.

Recommended Grounding Method

For personal safety, this appliance must be grounded. This appliance is equipped with a power supply cord having a 3-prong grounding plug. To minimize possible shock hazard, the cord must be plugged into a mating, 3- prong, grounding-type wall receptacle, grounded in accordance with the National Electrical Code and local codes and ordinances. If a mating wall receptacle is not available, it is the personal responsibility of the customer to have a properly grounded, 3-prong wall receptacle installed by a qualified electrician.

2-1

WATER SUPPLY AND DRAIN CONNECTIONS

CONNECTING THE WATER LINE

1.Turn off the main water supply.

2.Turn on the nearest faucet and allow it to run long enough to clear line of water.

3.Find a 1/2"(12.70 mm) to 1-1/4" (3.18 cm) vertical cold water pipe near the ice maker.

NOTE: A horizontal pipe will work, but drill on the top side of the pipe, not the bottom. This will keep water away from the drill motor, and also keeps normal sediment from collecting in the valve.

4.Using a grounded drill, a 1/4" (6.35 mm) hole in the cold water pipe you have selected.

5.Fasten a shutoff valve to the cold water pipe with a pipe clamp. Make sure that the outlet end is firmly in the 1/4" (6.35 mm) drilled hole, and that the washer is under the pipe clamp.

IMPORTANT: Do not use a piercing-type, or a 3/16" (4.76 mm) saddle-type valve. These can reduce water flow and easily become clogged.

6.Tighten the packing nut.

7.Tighten the pipe clamp screws carefully and evenly so that the washer makes a watertight seal. Do not overtighten the pipe clamp. If the water line is soft copper tubing, you could crush it.

8.Use 1/4" (6.35 mm) O.D. copper tubing for the cold water supply and:

a)Measure from the connection at the back of the ice maker to the cold water pipe.

b)Add an extra 36" (91.4 cm) to ensure that you have the proper length. Make sure both ends of the copper tubing are cut square.

c)Slip a compression sleeve and compression nut over the ends of the copper tubing.

d)Insert the end of tubing into the water shutoff outlet as far as it will go, and screw the compression nut onto the outlet. Tighten the compression nut with an adjustable wrench, but do not overtighten it.

9.Place the free end of the copper tubing into a container or sink, and turn on the main water supply. Flush the tubing until water is clear, and then turn off the shutoff valve on the water pipe. NOTE:Always drain the water line before making the final connection to the inlet of the water valve to avoid a possible water valve malfunction.

10.Bend the copper tubing to meet the water line inlet, located on the back of the ice maker cabinet, as shown below.

2-2

11.Thread the nut onto the coupling at the end of the copper tubing. Tighten the nut by hand. Then tighten it with a wrench two more turns. Do not overtighten.

CONNECTING THE DRAIN

Gravity Drain System

Connect the ice maker drain to your drain in accordance with all state and local codes and ordinances. If the ice maker is provided with a gravity drain system, use the following guidelines when installing the drain lines. This will avoid water from flowing back into the ice maker storage bin and potentially flowing onto the floor, causing water damage.

Drain lines must have a minimum of 5/8" (15.88 mm) inside diameter.

Drain lines must have a 1" drop per 48" (2.54 cm drop per 122 cm) of run, or 1/4" drop per 12" (6.35 mm per 30.48 cm) and not have any low points where water can settle.

The floor drains must be large enough to accommodate drainage from all drains.

The ideal installation has a standpipe with a 1-1/2" (3.81 cm) to 2" (5.08 cm) PVC drain reducer installed directly below the outlet of the drain tube, as shown. You must maintain a 1" (2.54 cm) air gap between the drain hose and the standpipe.

It may be desirable to insulate the drain line up to the drain inlet.

SIDE VIEW

15" Models

18" Models

1.Drain Hose

2.1" (2.54 cm) Air Gap

3.PVC Drain Reducer

4.Center of drain should be 20" (50.8 cm) back on 15" models from front of door and 23" (58.4cm) back on 18" models from front of door, with or without the 3/4" (1.91 cm) panel on the door.

2-3

Drain Pump System (On Some Models)

Connect the ice maker drain to your drain in accordance with the International Plumbing

Code and any local codes and ordinances.

NOTE: If the drain hose becomes twisted and water cannot drain, the ice maker will not operate.

Connecting the Drain

After ensuring that the drain system is adequate, follow these steps to properly place the ice maker:

WARNING

Electrical Shock Hazard

Plug into a grounded 3 prong outlet. Do not remove ground prong.

Do not use an adapter.

Do not use an extension cord.

Failure to follow these instructions can result in death, fire, or electrical shock.

1. Plug in ice maker or reconnect power.

WARNING

Excessive Weight Hazard

Use two or more people to move and install ice maker.

Failure to do so can result in back or other injury.

2.Style 1 - For gravity drain system, push the ice maker into position so that the ice maker drain tube is positioned over the

PVC drain reducer. Style 2 - For drain pump system connect the drain pump outlet hose to the drain. See “Drain Pump System” earlier in this section.

3.Recheck the ice maker to be sure that it is level.

4.If it is required by your local sanitation code, seal the cabinet to the floor with an approved caulking compound after all water and electrical connections have been made.

2-4

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 refrigeration 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 accumulator tube.

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

3-1

WATER SYSTEM

The water system provides:

Fresh water for ice production

Water recirculation as ice is produced

Water removal after ice is produced

The water system circulates water to freeze into ice on the evaporator during the freeze cycle. During the harvest cycle, it drains away minerals and contaminates. During the clean cycle, cleaning solution is circulated to clean the system of minerals and contaminates.

The hardness of the water supplied to the ice maker will affect the quality of the ice that is produced. It may also affect the operation of the water system.

A water softener, or poly phosphate feeder, will not cure all of the problems associated with hard water, but they can be used to reduce scale buildup in the ice maker. NOTE: Some poly phosphate feeders will cause a slime buildup in the water system when the water supply has a low mineral content.

The ice maker’s water system is shown on next page.

3-2

WATER SYSTEM COMPONENT LOCATIONS

Water Distributor

Evaporator

Water Return Tube

Manual Drain

Drain Overflow

Water Valve Outlet Tube

 

 

 

Bin Drain

 

 

 

Measured Fill

Water Inlet Valve

Water Level Sensor

Water Recirculation

Pump

Reservoir Pan

Reservoir Drain Pump

From Water Supply

3-3

ELECTRICAL SYSTEM

The ice maker’s electrical system provides power for the refrigeration and water systems, and controls the operation of each component.

3-4

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

informationtotheelectroniccontroltodetermine

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

HARVEST MODE

Electrical System

When the water level in the reservoir drops below the water level sensor it signals the electronic control to terminate power to the condenser fan, and then the water recirculating pump. The reservoir drain pump is activated to fully drain the reservoir. Power is then supplied to the hot gas valve and a fill request is sent to the measured fill valve. The fill valve

fills to the requested volume while the hot gas valve is energized for the balance of the harvest mode.

If the evaporator thermistor is unplugged, the evaporator defaults to a timed 4 minute harvest.

If the water level sensor is disconnected or open, the control defaults to 25 minutes of freeze time. The cleaning indicator LED feature will not function if the water level sensor is disconnected.

Refrigeration System

The hot gas valve opens, allowing high pressure 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 refrigerant 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 electronic control board sends a signal to the water valve. The signal tells the water valve how much water to be filled, allowing water to

flow into the water reservoir pan. The water fill volume is determined by the ice thickness setting.

As a result of the hot gas flow and the ice sliding off the evaporator plate, the evaporator temperature begins to rise. When the evaporator thermistor reaches the set temperature (52°F), the unit switches to the Freeze mode. This cycling between Freeze and Harvest, continues until the ice bin is full.

The electronic control board operates the various components and systems in the ice maker for each of the Freeze and Harvest modes.

CLEAN MODE

Electrical System

The electronic control board operates the various components and systems during the

Clean mode.

For the order of the components cycled, see the flow chart on page 6-13.

Water System

When the service control switch is in the “Clean” position, the water recirculating pump circulates the cleaning solution that has been added to the reservoir, up to the water distributor, across the evaporator, and back into the reservoir, where it is recirculated. The compressor and hot gas valve operate to heat the evaporator.

DIAGNOSTIC MODE

1.Do not continue with the diagnosis oftheice maker if a fuse is blown, a circuit breaker is tripped, or if there is less than a 120 volt power supply at the wall outlet.

2.All units that have failed during the first few days of use should be checked for loose connections or miswiring.

Entering and Navigating — Manual

Diagnostics

Turn the product on. Within 10 seconds of Power On, press and hold the On and the

Clean buttons. Release both buttons when all user interface LEDs begin to flash.

Within 5 seconds of all LEDs flashing, push any other button on the user interface. This begins manual diagnostics.

If no button is pressed within 5 seconds, the product goes into the automatic diagnostic mode used at the assembly plant. Each component is cycled for 5 seconds.

The Service button (or Off button on some models) is used to advance through each step.

To exit manual diagnostics, press the Power button (or On button on some models)

3-6

Diagnostic Chart

After pressing any button to enter manual diagnostics all LEDs will illuminate for 5 seconds. The controls will then automatically move to the first component.

Order

Component

On/Off LED

Service LED

Clean LED

Feature Light (for

 

 

(On for some

(Off for some

 

some models)

 

 

models)

models)

 

 

1

Entry into Test

ON

ON

ON

ON

 

Mode

 

 

 

 

 

 

 

 

 

 

2

Bin Thermistor

ON Solid--OK

OFF

OFF

OFF

 

 

2 blinks--Open

 

 

 

 

 

4 blinks--Short

 

 

 

3

Evaporator

OFF

OFF

ON Solid--OK

OFF

 

Thermistor

 

 

2 blinks--Open

 

 

 

 

 

4 blinks--Short

 

4a

Water Valve

OFF

ON Solid--reservoir full

ON

OFF

 

4 min time out

 

Blinking--reservoir

 

 

 

Service button

 

empty

 

 

 

press will advance

 

 

 

 

 

to step 6

 

 

 

 

4b

Water Level

OFF

ON Solid--reservoir full

ON

OFF

 

Sensor

 

Blinking--reservoir

 

 

 

 

 

empty

 

 

5

Recirculation

ON

ON

ON

OFF

 

Pump

 

 

 

 

 

 

 

 

 

 

6

Reservoir Drain

ON

OFF

OFF

OFF

 

Pump

 

 

 

 

 

 

 

 

 

 

7

Compressor and

ON Solid while cooling

Blinking when evap

ON

OFF

 

Condenser Fan

 

thermistor reaches

 

 

 

Motor

 

4.5ºF; full frost pattern

 

 

 

 

 

should be visible

 

 

8

Compressor and

ON Solid while heating

ON Solid while heating

ON Solid while heating

OFF

 

Hot Gas Valve

 

Blinking when evap

 

 

 

 

 

thermistor reaches 52ºF

 

 

9

Twice Ice

OFF

OFF

ON Solid--No delay

OFF

 

 

 

 

Blinking--10 min delay

 

 

 

 

 

between cycles

 

 

 

 

 

Press Clean button to

 

 

 

 

 

cycle between settings

 

10

Ice Thickness

OFF

2 Blinks--Thin

OFF

OFF

 

 

 

4 Blinks--Normal

 

 

 

 

 

6 Blinks--Thick

 

 

 

 

 

Press Clean button to

 

 

 

 

 

cycle between settings

 

 

ERROR DISPLAYS

These errors will occur at any time during normal operation if a thermistor fails.

2 Blinks — Service Light is blinking twice in repeating intervals – This signifies a bin thermistor failure. Check that the bin thermistor is plugged in to the control box. Check that the bin thermistor is not open or shorted. Replace the thermistor if it is open or shorted.

3 Blinks — Service Light is blinking three times in repeating intervals – This signifies a harvest failure. Check that the evaporator thermistor is connected to the sealed system tubing. If the thermistor is plugged in, ensure that it is fully connected to the control box. (The ice maker will operate on a timed cycle if the evaporator thermistor is unplugged.) Check the resistance of the thermistor. If the thermistor checks good, then look for a frost pattern on the evaporator plate. The unit may be low on refrigerant.

HOLIDAY MODE

The Holiday Mode feature is designed for the traveler or for those whose religious observances require turning off the lights and the ice maker. By selecting this feature, ice production and the interior lights will be disabled. Press and hold the Holiday Mode button to turn on the Holiday Mode feature. Press and hold the button again to turn off the feature.

The Holiday mode LED is lite constantly in this mode.

3-7

MODELS WITH INTERNAL DRAIN PUMPS

The power cord on the internal drain pump is connected to a 120 VAC wall outlet. The ice maker is then connected to the 120 VAC outlet on the drain pump. If the drain pump fails, or if the drain becomes blocked, power is shut off to the 120 VAC outlet on the drain pump.

When the unit is first plugged in, the drain pump will run for 20 seconds. The power can be disconnected and reconnected to verify that the pump is operating properly.

Water from the ice maker reservoir, or melting ice from the bin, drains down the bin drain tube

Pump Inlet

Contacts Sense Continuity

Through The Water

into the pump inlet, and then into the drain pump chamber.As the water level rises, it bridges the “full” contacts, and the pump starts to run. The pump discharges the water through the outlet and the check valve. When the “full” connection is removed, the pump runs for an additional 12 seconds to empty the tank.

If the water level in the drain pump continues to rise, due to a slow or blocked drain, or a blocked vent hose, and touches the “overfill” contact, power will be turned off to the drain pump’s 120 VAC outlet, causing the ice maker to turn off.

Vent Outlet

White

Pump Outlet &

 

Black

Check Valve

Green

 

Overfill Contact

Full Contacts

Connector Hose

(Contains Screen Washer)

Screen

Washer

3-8

Whirlpool KUIA15NRH'11, KUIA18NNJ'11, KUIA15PLL'11, KUIA18PNL'11, KUIA15NLH'11 User Manual

COMPONENT ACCESS

This section instructs you on how to service each component inside the 2007 Design 15” & 18”

Automatic Ice Makers. The components and their locations are shown below.

COMPONENT LOCATIONS

Light Switch

Electronic Control Board

Push-button

Dual Transformer

 

 

Switch

 

 

Evaporator

NOTE: The Evaporator

Thermistor Is Located On

Tubing Below Evaporator

Cutter Grid

Compressor

Condenser

Fan Motor

Hot Gas Valve &

Solenoid (Behind

Condenser)

Measured Fill

Water Valve

Bin

Thermistor

Water Level

Sensor

Water

Recirculation

Pump

Reservoir

Drain Pump

Condenser

Condenser Accumulator Tube

4-1

REMOVING THE BIN THERMISTOR, CUTTER GRID, EVAPORATOR THERMISTOR, & WATER DISTRIBUTOR

WARNING

Electrical Shock Hazard

Plug into a grounded 3 prong outlet. Do not remove ground prong.

Do not use an adapter.

Do not use an extension cord.

Failure to follow these instructions can result in death, fire, or electrical shock.

1.Unplug ice maker or disconnect power.

2.Open the ice maker door.

3.Cover or remove the ice from the storage bin.

4.Place a cloth in the drain hole to avoid hardware from falling inside.

5.Remove the two hex-head screws from the cutter grid cover and remove the cover.

Cutter Grid Cover

Cutter Grid Cover Screws

Cutter Grid Cover

6.To remove the bin thermistor:

a)Disconnect the bin thermistor connector from the bottom of the control housing.

b)Pull the bin thermistor out of the retaining clamp and remove it.

Control Housing

Connector

Bin Thermistor

Retaining Clamp

7.To remove the cutter grid:

a)Disconnect the cutter grid and bin thermistor connectors from the bottom of the control housing.

b)Remove the two hex-head screws from both sides of the cutter grid. The longer screw and white spacer are on the right side.

Spacer Bracket (Left Side)

18˝ Models

Bin Thermistor Connector

Cutter Grid Connector

Cutter Grid Screws

4-2

c)Slide the cutter grid forward and out of the unit and place it on a work surface.

Be careful not to scratch the ice maker liner.

d)Remove the spacer from the right cutter grid bracket tab.

Cutter

 

Grid

 

 

 

 

 

 

Spacer

e)Unsnap the two ice guides from the cutter grid tabs. There should be a slight outward tilt after the guides are installed. Bend the metal tabs outward if necessary.

Cutter Grid

Ice Guides

8.To remove the evaporator thermistor:

a)Remove the cutter grid from the unit

(see step 7 on page 4-2 for the procedure).

b)Disconnect the evaporator thermistor connector from the bottom of the control housing.

c)Remove the two hex-head mounting screws from the water trough and pull the trough from the unit.

 

 

 

Evap Thermistor Connector

Control Housing

 

 

 

 

 

 

 

 

 

 

 

 

Water Trough Screws

 

 

 

 

 

Water Trough

d)Reach behind the accumulator, and unclip the evaporator thermistor from the evaporator tubing and remove it.

Evaporator Thermistor

Bottom Of The Evaporator

Accumulator

 

Continued on the next page.

4-3

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