KitchenAid KAR-13, KUIO15NNLS Technical Education

KAR-13

TECHNICAL EDUCATION

OUTDOOR AUTOMATIC

ICE MAKER

Model KUIO15NNLS

JOB AID 4317309

FORWARD

This KitchenAid Job Aid, “Outdoor Automatic Ice Maker,” (Part No. 4317309), provides the
technician with information on the installation, operation, and service of the Outdoor Automatic Ice
Maker. It is to be used as a training Job Aid and Service Manual. For specific information on the
model being serviced, refer to the “Use and Care Guide,” or “Wiring Diagram” 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 unit.

GOALS AND OBJECTIVES

The goal of this Job Aid is to provide detailed information that will enable the service technician to
properly diagnose malfunctions and repair the KitchenAid Outdoor Automatic Ice Maker.

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 Authorized Service Technicians.

Copyright © 2003, Whirlpool Corporation, Benton Harbor, MI 49022

- ii -

TABLE OF CONTENTS

Page

GENERAL............................................................................................................................... 1-1

Safety First......................................................................................................................... 1-1

KitchenAid Model & Serial Number Designations.............................................................. 1-3

Model & Serial Number Label And Wiring Diagram Locations .......................................... 1-4

Specifications..................................................................................................................... 1-5

Outdoor Ice Maker Warranty ............................................................................................. 1-6

INSTALLATION INFORMATION ........................................................................................... 2-1

Electrical Supply Requirements ......................................................................................... 2-1

Water Supply And Drain Connections ............................................................................... 2-2

THEORY OF OPERATION ..................................................................................................... 3-1

The Controls ...................................................................................................................... 3-1

Water And Refrigerant Circuit ............................................................................................ 3-2

COMPONENT ACCESS ......................................................................................................... 4-1

Component Locations ........................................................................................................ 4-1

Removing The Water Inlet Valve ....................................................................................... 4-2

Removing The Evaporator ................................................................................................. 4-3

Removing The Water Recirculation Pump......................................................................... 4-4

Removing The Evaporator Thermistor............................................................................... 4-8

Removing The Bin Thermostat ........................................................................................ 4-10

Removing The Hot Gas Valve And Solenoid ................................................................... 4-12

Removing The Master Switch, Recirculation Pump Motor Capacitor,

And Electronic Control Board ....................................................................................... 4-14

Removing The Condenser Fan Motor ............................................................................. 4-16

Removing The Condenser ............................................................................................... 4-18

Removing The Compressor ............................................................................................. 4-20

Removing The Door, Door Gasket, And Top Cover ........................................................ 4-22

COMPONENT TESTING ........................................................................................................ 5-1

Water Inlet Valve Solenoid ................................................................................................ 5-1

Water Recirculation Pump ................................................................................................. 5-1

Evaporator Thermistor ....................................................................................................... 5-2

Bin Thermostat .................................................................................................................. 5-2

Hot Gas Valve Solenoid..................................................................................................... 5-3

Master Switch .................................................................................................................... 5-3

Recirculation Pump Motor Capacitor ................................................................................. 5-4

Condenser Fan Motor ........................................................................................................ 5-4

Compressor, Overload, & Relay ........................................................................................ 5-5

- iii -

Page

DIAGNOSIS & TROUBLESHOOTING ................................................................................... 6-1

Timing Chart ...................................................................................................................... 6-1

Troubleshooting Chart ....................................................................................................... 6-2

WIRING DIAGRAM & STRIP CIRCUITS ............................................................................... 7-1

Wiring Diagram .................................................................................................................. 7-1

Strip Circuits ...................................................................................................................... 7-2

TECH TIPS ............................................................................................................................. 8-1

Cleaning The Ice Maker..................................................................................................... 8-1

Routine Cleaning ......................................................................................................... 8-1

Cleaning The Spray Assembly .................................................................................... 8-2

- iv -

GENERAL

SAFETY FIRST

Your safety and the safety of others is very important.

We have provided many important safety messages in this Job Aid and on the appliance. Always
read and obey all safety messages.

This is the safety alert symbol.
This symbol alerts you to 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:

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

DANGER

WARNING

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.

immediately follow instructions.

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

ELECTRICAL POWER SUPPLY &
GROUNDING REQUIREMENTS

WARNING

Electrical Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before
operating.

Failure to do so can result in death or
electrical shock.

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.

1-1

WARNING

Electrical Shock Hazard

Connect green ground wire to ground
screw.

Failure to do so can result in death or
electrical shock.

IMPORTANT

Electrostatic Discharge (ESD)

Sensitive Electronics

ESD problems are present everywhere.
ESD may damage or weaken the elec­tronic control assembly. The new control
assembly may appear to work well after
repair is finished, but failure may occur at
a later date due to ESD stress.

• Use an antistatic wrist strap. Connect the
wrist strap to the green ground connec­tion point, or to an unpainted metal sur­face in the appliance.

- OR -

• Touch your finger repeatedly to a green
ground connection point, or to an un­painted metal surface in the appliance.

• Before removing the part from its pack­age, touch the antistatic bag to a green
ground connection point, or to an un­painted metal surface in the appliance.

• Avoid touching electronic parts, or termi­nal contacts. Handle the electronic con­trol assembly by the edges only.

• When repackaging the failed electronic
control assembly in an antistatic bag,
observe the previous instructions.

1-2

KITCHENAID MODEL & SERIAL NUMBER DESIGNATIONS

MODEL NUMBER

MODEL NUMBER K UI O 15 NN L S 0

INTERNATIONAL SALES IND.
OR MARKETING CHANNEL
IF PRESENT

PRODUCT GROUP

K = KITCHENAID

PRODUCT IDENTIFICATION

UI = UNDERCOUNTER ICE MAKER

MERCHANDISING SCHEME

O = OUTDOOR

CAPACITY / SIZE / SERIES / CONFIGURATION

15 = 15" WIDE

FEATURES

NN = NON-PUMP, NON-REVERSIBLE DOOR

YEAR OF INTRODUCTION

L = 2002

COLOR CODE

S = STAINLESS STEEL

ENGINEERING CHANGE (NUMERIC)

SERIAL NUMBER

SERIAL NUMBER EH P 04 54321

DIVISION RESPONSIBILITY
E = EVANSVILLE, IN / SOURCED

YEAR OF PRODUCTION

P = 2003, R = 2004

WEEK OF PRODUCTION

04 = 4th WEEK

PRODUCT SEQUENCE NUMBER

1-3

MODEL & SERIAL NUMBER LABEL

AND WIRING DIAGRAM LOCATIONS

The Model/Serial Number label and Wiring Diagram locations are shown below.

Model & Serial Number Label Location

Wiring Diagram Location
(On Rear Of Front Panel)

1-4

SPECIFICATIONS

(

)

(

)

(

)

(

)

AC Power Supply .........................................................................104 To 127 VAC, 60 Hz

Amperage....................................................... 3.4A (5 Minute Freeze @ 104°F/WT 80°F)

Minimum Circuit Capacity ................................................................................... 15 Amps

Maximum Fuse Size............................................................................................ 15 Amps

Ice Production Per 24 Hr. (Approximate) ...........................................................................

Ambient

Temp (°F/°C)

70/21 51 lbs. (23 kg) 46 lbs. (21 kg) 43 lbs. (19 kg)
80/27 47 lbs. (22 kg) 40 lbs. (18 kg) 38 lbs. (17 kg)
90/32 46 lbs. (21 kg) 35 lbs. (16 kg) 32 lbs. (14 kg)

100/38 40 lbs. (18 kg) 34 lbs. (15 kg) 29 lbs. (13 kg)

Water Temperature (°F/°C)

50/10 70/21 90/32

Ice Shape ............................................................................................................. Top Hat

Ice Production Per Cycle........................................................ 24 pcs, 0.595 Ibs. (0.27 kg)

Storage Capacity (Approximate) ............................................................. 28 Ibs. (12.7 kg)

Bin Control Setting ...................................................................................22 Ibs. (10.0 kg)

Exterior Dimensions (W x D x H) ................... 14.9″ x 22.6″ x 33.5″ (378 x 575 x 850mm)

Exterior Finish ....................................... Stainless Steel, Plastic, Galvanized Steel (Rear)

Net Weight ..................................................................................................88 Ibs. (40 kg)

Cube Control System ....................................................... Thermistor & Electronic Control

Harvesting Control System ............................................................. Hot Gas & Thermistor

Ice Making Water Control...................................................................... Electronic Control

Bin Control System ......................................................................................... Thermostat

Refrigerant .............................................................................................................. R134a

Ambient Temperature .................................................................................... 45 To 100°F

Water Supply Pressure ............................................................................... 7 To113 PSIG

Electrical Consumption

Ambient

Temp (°F/°C)

70/21 222 Watts 228 Watts 235 Watts
80/27 227 Watts 237 Watts 242 Watts
90/32 228 Watts 244 Watts 250 Watts

100/38 237 Watts 246 Watts 255 Watts

Ambient

Temp (°F/°C)

70/21 3.1 min. 2.0 min. 2.0 min.
80/27 3.0 min. 2.0 min. 2.0 min.
90/32 3.0 min. 2.4 min. 2.0 min.

100/38 3.0 min. 2.0 min. 2.1 min.

Water Temperature

50/10 70/21 90/32

Water Temperature

50/10 70/21 90/32

°F/°C

°F/°C

Temp (°F/°C)

Temp (°F/°C)

Water Consumption (Per 24 Hrs.)

Ambient

70/21 44 Gal. 38 Gal. 33 Gal.
80/27 39 Gal. 31 Gal. 27 Gal.
90/32 38 Gal. 24 Gal. 20 Gal.

100/38 31 Gal. 23 Gal. 16 Gal.

Ambient

70/21 16 min. 19 min. 23 min.
80/27 18 min. 21 min. 26 min.
90/32 19 min. 24 min. 29 min.

100/38 25 min. 29 min. 33 min.

Water Temperature

50/10 70/21 90/32

Freeze Cycle TimeHarvest Cycle Time

Water Temperature

50/10 70/21 90/32

°F/°C

°F/°C

1-5

OUTDOOR ICE MAKER WARRANTY

1-6

INSTALLATION INFORMATION

ELECTRICAL SUPPLY REQUIREMENTS

WARNING

Electrical Shock Hazard

• A 115 Volt, 60 Hz, AC only 15 ampere 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.

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:

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

CAUTION: To prevent damage to the freezer

mechanism, do not operate this ice maker
when the water supply is OFF, or if the pres­sure is below 10 PSIG (0.7 bar), the recom­mended water pressure. Stop the ice maker
until proper water pressure is resumed.

• The water supply inlet is 1/2-14 NPT and
must only be connected to a potable water
supply.

• A water supply line shut-off valve and drain
valve must be installed.

• Water supply pressure should be a minimum
of 10 PSIG (0.7 bar), and a maximum of 113
PSIG (7.5 bar). If the pressure exceeds 113
PSIG (7.5 bar), use a pressure reducing
valve.

Ice Maker

• The drain outlet hose is 5/8″ (16mm) I.D. and
internally connected with a 2/3″ (17mm) O.D.
drain outlet.

• The drain must be 1/4″ fall-per-foot (2 cm
fall-per-meter) on horizontal runs for opti­mum flow.

• Keep a 2 vertical inch (5 vertical cm) air gap
or more between the drain pipe end and the
sink.

• The drain pipe must be used to prevent a
backflow into the storage bin.

• This ice maker should be installed in accor­dance with applicable national, state,
and local regulations.

Vent

1/4" Fall-Per-Foot

To Approved Floor Drain

Water Supply Inlet = 1/2-14 NPT

Shutoff Valve

Drain Valve (Air or CO2 For
Long Term Storage)

Bin Drain Outlet

Hose 5/8" I.D.

2-2

THEORY OF OPERATION

THE CONTROLS

ICE MAKING CONTROL

The freeze and harvest cycles are controlled
by a thermistor and an electronic control.

The electronic controller uses a thermistor that
is attached to the top of the evaporator to
monitor the evaporator temperature. When the
thermistor signals 28°F (–2°C), the control
begins to count down 10 minutes. The elec­tronic control then switches the contacts of
relays X1 and X2, which stops the pump and
fan motors, and engerizes the hot gas and
water valves. This completes the freeze cycle,
and starts the harvest cycle.

HARVEST CONTROL

The ice cubes formed inside the ice making
cells are released by hot gas warming the
evaporator. When a small portion of the ice
melts on the ice making cells interior, the ice
drops down the ice guide into the storage bin.

When the evaporator is warmed further (to
approximately 45°F / 7°C), the thermistor sen­ses the temperature rise, and the electronic
controller begins to count down 50 seconds.
The controller then switches the contacts of the
relays, which starts the pump and fan motors,
and de-energizes the hot gas and water valves.
This completes the harvest cycle, and starts
the freeze cycle. The harvest and freeze cycles
will continue until the bin is full of ice and the bin
thermostat is satisfied.

At low temperature conditions where the har­vest cycle exceeds 3 minutes, the water valve
will de-energize after 3 minutes.

At the initial start, or after a power failure, the
ice maker will begin in the harvest cycle, be­cause the compressor is under a “no load”
condition (hot gas valve is energized). During
this time, any ice that is present on the evapo­rator will be removed.

In the initial cycle at startup, or after shutdown
for bin control, water is supplied for 80 sec­onds. The water valve de-energizes approxi­mately 30 seconds after the freeze cycle starts.

NO ADJUSTMENT

The thermistor and electronic control are fac­tory adjusted to produce constant ice all year,
and are not affected by changes in the ambient
and water temperatures. No adjustment is re­quired for any frequency 50/60Hz or ambient
temperature from 45 to 100°F.

No Adjustment.
Controls Are Sealed.
If Seals Are Broken,

Replace Control.

3-1

WATER AND REFRIGERANT CIRCUIT

3-2

COMPONENT ACCESS

This section instructs you on how to service each component inside the Outdoor Automatic Ice
Maker. The components and their locations are shown below.

COMPONENT LOCATIONS

TOP OF UNIT

Bin Thermostat
(On Rear Panel)

Evaporator Thermistor

Water Inlet Valve

Hot Gas Valve

(Behind Compressor)

Water Recirculation Pump

Evaporator

BOTTOM FRONT OF UNIT

Compressor

Condenser

Recirculation Pump
Motor Capacitor

Condenser Fan Motor

Master Switch

Electronic Control Board

4-1

REMOVING THE WATER INLET VALVE

WARNING

Electrical Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before
operating.

Failure to do so can result in death or
electrical shock.

1. Unplug ice maker or disconnect power.

2. Turn off the water supply to the ice maker.

10. Lift the water inlet valve, release the inlet
fill tube from the molded retainer, and
remove them from the ice maker.

Inlet Fill Tube In Retainer

3. Move the ice maker to gain access to the
rear of the unit.

4. Disconnect the drain outlet hose from the
ice maker.

5. Disconnect the water inlet line from the ice
maker.

6. Remove the ice from the storage bin.

7. Remove the ice maker door and the top
cover (see page 4-22 for the procedures).

8. Remove the two screws from the water
inlet valve.

9. Disconnect the two wires from the water
inlet valve solenoid terminals.

Solenoid Wires

Water Inlet

Valve

Screws

11. Remove the clamp from the inlet fill tube
and remove the tube from the water inlet
valve.

Clamp

REASSEMBLY NOTES:

• When you reconnect the inlet fill tube to the

water inlet valve, be sure to position it, as
shown in the photo above.

• When you reinstall the water inlet valve and

inlet fill tube in the ice maker, be sure to fit
the tube inside the molded retainer, as shown
at the top of the page.

4-2

REMOVING THE EVAPORATOR

WARNING

Electrical Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before
operating.

Failure to do so can result in death or
electrical shock.

1. Unplug ice maker or disconnect power.

2. Turn off the water supply to the ice maker.

3. Move the ice maker to gain access to the
rear of the unit.

10. Remove the water inlet valve solenoid
wires from the terminals and move them
out of the way.

11. Remove the evaporator thermistor screw
and remove the thermistor from the evapo­rator. NOTE: You will need to replace the
thermistor and rebond it to the new evapo­rator using the sealant provided with the
new thermistor.

12. Protect the area surrounding the two
evaporator joints.

4. Disconnect the drain outlet hose from the
ice maker.

5. Disconnect the water inlet line from the ice
maker.

6. Open the ice maker door.

7. Remove the ice from the storage bin.

8. Remove the top cover (see page 4-22 for
the procedure).

9. Remove the four screws from the evapo­rator.

Evaporator Thermistor

Evaporator Joints

Water Inlet Valve

13. Access the sealed system and discharge
the refrigerant into an approved recovery
system.

14. Unbraze the two evaporator joints from
the sealed system and remove the evapo­rator.

Screw (1 of 4)

Evaporator

4-3