Sub Zero Ice Maker UC 15IO UL User Manual

USE & CARE GUIDE

Undercounter Ice Machine

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Sub-Zero Undercounter Ice Machine

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Thank You

Thank you for purchasing your new Sub-Zero under-

counter ice machine. With Sub-Zero, you can rely on a

60-year tradition of quality and reliability.

BEFORE OPERATING

It is important to clean and sanitize the ice machine prior

to use for optimum ice quality. To ensure proper operation,

follow the operational checks on pages 7–8.

Your Sub-Zero is protected by a warranty that is one of

the finest in the industry. Take a moment to read the

warranty statement at the end of this guide and refer to it

should service become necessary.

Due to regulatory restrictions, cleaner and sanitizer do not

ship with the ice machine. Cleaner and sanitizer can be

ordered online at subzerowolfstore.com. For questions,

contact Sub-Zero customer care at 800-222-7820.

This use & care guide will answer most of your questions

about the features, operation and maintenance of your

undercounter ice machine. If you have questions that are

not addressed here, call Sub-Zero customer care at

800-222-7820 or visit our website, subzero.com.

IMPORTANT NOTE: Adjustments and cleaning and main-

tenance procedures outlined in this guide are not covered

by the warranty.

If service should become necessary, you will need the

model and serial numbers of the ice machine. Both

numbers are listed on the product rating plate, located in

the upper left corner of the ice bin and on the back of the

unit. Refer to the illustration below.

Do not store food or beverages in the ice machine.

Do not operate equipment that has been misused,

neglected, damaged, altered or modified from that of

original manufactured specifications.

RATING PLATE

Location of rating plate.

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Ice Machine Models

Ice Machine Features

•

High-volume ice machine—great for entertaining.

•

Ice scoop fits neatly in door.

Automatic defrost.

Models UC-15IPO and UC-15IO UL approved for

outdoor use up to 110°F (45°C).

Drain pump for models UC-15IP and UC-15IPO—

models UC-15I and UC-15IO use a gravity drain.

•

Produces up to 50 lbs (23 kg) of ice per day with

large-capacity storage.

•

UL approved for US and Canada.

Automatic ice maker provides quality, octagonal-

shaped ice.

Two, five and twelve year residential warranty—

exclusions apply, see warranty at the end of this guide.

•

Advanced water filtration system.

Produces ice in air temperature up to 100°F (40°C)—

up to 110°F (45°C) for outdoor models.

•

Easy-access control panel.

Two, four or eight hour delay feature.

Clean and change filter indicator lights.

Bin light.

Models UC-15I(P) and UC-15I(P)O

ICE MACHINE

Control panel

Water shutters

Water reservoir

Bin light

Ice scoop

Gasket

Large capacity

ice storage bin

Water filter

Kickplate

Reversible

door hinge

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Ice Machine Operation

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Control Panel

POWER KEY PAD

CLEAN KEY PAD

Press the POWER key pad once to activate the ice

machine and the green POWER light. Press the POWER

key pad a second time to deactivate the ice machine.

Press the CLEAN key pad to initiate a cleaning cycle. The

ICE light will be deactivated. The green CLEAN light will

flash during the cleaning cycle to indicate the proper time

to add cleaner or sanitizer to the ice machine.

ICE LIGHT

REPLACE FILTER LIGHT

The blue ICE light is illuminated when the ice machine is in

ice making operation. The light is off when the ice machine

is in the clean cycle.

When the ice machine completes 8000 freeze and harvest

cycles, the red REPLACE FILTER light will illuminate to

indicate the filter needs replaceing. Depress the CLEAN

key pad for six seconds to reset the counter and light.

DELAY KEY PAD

Press the DELAY key pad to initiate a delay period. The ice

machine will not produce ice until the delay period has

expired.

•

Press the key pad once to illuminate the 2-hour light

and initiate a two hour delay period.

Press the key pad a second time to illuminate the

4-hour light and initiate a four hour delay period.

Press the key pad a third time to illuminate the 8-hour

light and initiate an eight hour delay period.

Press the key pad a fourth time will cancel the delay

period.

Control panel.

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Ice Machine Operation

Ice Making Operation

Depending on ambient conditions and cold water supply

temperature, the ice making process will take approxi-

mately 30 minutes.

5) Automatic shut-off. The level of ice in the storage bin

controls the automatic shut-off. When the bin is full, ice

will contact the bin thermostat clip. The bin thermostat

clip cools, signaling the ice machine to stop ice

production. When the ice level drops and ice no longer

contacts the bin thermostat clip, it will warm. The

increase in temperature will restart ice production.

1) Water fill cycle. (Initial start-up or start-up after

automatic shut-off.) Before the compressor starts, the

water inlet valve will purge old water from the system

for about three minutes.

2) Refrigeration system start-up. The compressor starts

after the water fill cycle and remains on throughout the

freeze and harvest cycles. The condenser fan motor

starts and runs throughout the freeze cycle.

3) Freeze cycle. The water pump sprays water into the

inverted cups. The water freezes layer by layer, until an

ice cube forms in each cup. The control system will

adjust the length of the freeze cycle to conditions.

4) Harvest cycle. The water pump shuts off and the

water inlet valve starts up to assist harvest and refill

the water sump. The evaporator is warmed, allowing

the cubes to release from the evaporator and drop into

the storage bin. The control system will adjust the

length of the harvest cycle to conditions and regulate

whether the condenser fan will run. At the end of the

harvest cycle, the ice machine will start another freeze

cycle.

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Ice Machine Operation

Operational Checks

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The ice machine is factory tested and adjusted before

shipping. Normally, new installations do not require any

adjustment. Routine adjustments and maintenance proce-

dures are not covered by the warranty.

If ice production stops before the bin is full or continues

after the bin is full, ambient temperatures are probably too

high or too low. The level of ice can be adjusted by follow-

ing the steps below. The bin thermostat control is located

behind the kickplate. Refer to the illustration below.

To ensure proper operation, follow the operational checks

when starting the ice machine for the first time, after a

prolonged out of service period and after cleaning and

sanitizing.

1) To access the bin thermostat, remove the four screws

attaching the kickplate and tilt forward to remove.

2) Turn the bin thermostat control to the left to decrease

the level of ice or to the right to increase the level of ice

in the bin before automatic shut-off.

WATER LEVEL

The ice machine maintains the correct water level. The

water level is not adjustable.

3) Reinstall the kickplate.

BIN THERMOSTAT

Power is supplied to ice machine during this procedure.

Avoid contact with the fan blade and the electrical

connections.

The bin thermostat signals the ice machine to stop ice

production when the bin is full. It is preset for normal

ambient temperatures and adjustments are usually not

necessary.

To check operation of the bin thermostat, place three ice

cubes on the thermostat clip for about five minutes, ice

production should stop. The ice machine should restart

five minutes after the cubes are removed. Refer to the

illustration below.

THERMOSTAT

CLIP

THERMOSTAT

CONTROL

Bin thermostat clip.

Bin thermostat adjustment.

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Ice Machine Operation

Operational Checks

Cleaning

CUBE WEIGHT

Proper cleaning and maintenance of your ice machine will

increase its reliability and performance and help minimize

water and power consumption.

Cube weight increases or decreases depending on the

amount of dimple in the cube. Refer to the illustration

below. The cube weight can be increased from the factory

setting by adjusting the finish time.

Due to regulatory restrictions, cleaner and sanitizer do not

ship with the ice machine. Cleaner and sanitizer can be

ordered online at subzerowolfstore.com. For questions,

contact Sub-Zero customer care at 800-222-7820.

Check cube finishing time. Press and hold the POWER

key pad for five seconds. Count the flashes on the ICE

light. The light will flash once for each additional minute of

freeze cycle time.

IMPORTANT NOTE: Poor water quality may require more

frequent cleaning, sanitizing and water filter replacement.

Adjust cube finishing time. Adjust in one minute incre-

ments and allow the ice machine to run several freeze and

harvest cycles, then inspect the ice cubes. If a heavier

cube weight is desired add another minute of freeze time

and repeat the process.

Clean the entire unit including the cabinet exterior periodi-

cally. Also check the ice quality. To ensure reliable,

trouble-free operation and maximum ice production, the

following cleaning and maintenance should be performed

every six months or after a prolonged shutdown.

1) Press and hold the POWER key pad.

•

Sanitize ice storage bin (also before initial start-up).

Clean condenser.

2) Press and release the CLEAN key pad once for each

additional minute of freeze cycle time desired. Five

minutes is the maximum additional freeze time that can

be added.

Replace water filter.

To ensure efficient operation, an annual cleaning

performed by Sub-Zero factory certified service is recom-

mended. The ice machine will require disassembly,

cleaning and sanitizing. For the name and number of

Sub-Zero factory certified service, check the contact &

support section of our website, subzero.com or call

800-222-7820.

3) Press the CLEAN key pad six times to reset the

finishing time to the original factory setting.

DIMPLE

Cube weight.

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Ice Machine Care

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Cleaning

CLEANING AND SANITIZING

1) Add 4 ounces (115 ml) of undiluted ice machine cleaner

to a container that will fit under the lifted water

shutters. Refer to the illustration below.

Cleaning and sanitizing of all surfaces that come in

contact with the water system should be performed every

six months. The following steps outline the cleaning and

sanitizing procedure with the ice machine in place.

2) Press the CLEAN key pad. The ice machine will initiate

a two minute harvest to remove any remaining ice from

the evaporator.

Use only the cleaner and sanitizer made for your Sub-Zero

ice machine. The cleaner removes lime scale or other

mineral deposits and the sanitizer disinfects and removes

algae and slime.

3) Remove all ice from the bin.

4) Wait three minutes until the CLEAN light flashes, then

add the prepared cleaner by lifting the water shutters

and pouring directly into the spray area.

If the ice machine requires more frequent cleaning and

sanitizing, consult a qualified professional to test the water

quality and recommend appropriate water treatment.

An abnormally dirty ice machine must be disassembled

for proper cleaning and sanitizing by Sub-Zero factory

certified service.

5) The ice machine will automatically time out a ten

minute cleaning cycle, followed by eight rinse cycles,

and stop. The CLEAN light will turn off to indicate the

cleaning cycle is complete. This entire cycle lasts

approximately 30 minutes.

6) Add 1 tablespoon (15 ml) of undiluted ice machine sani-

tizer to a container that will fit under the lifted water

shutters.

Use only the Sub-Zero approved ice machine cleaner

and sanitizer and follow all label directions and

warnings. Damage to the ice machine evaporator

caused by incorrect chemical usage is not covered by

the warranty.

7) Press the CLEAN key pad. Wait three minutes until the

CLEAN light flashes, then add the prepared sanitizer by

lifting the water shutters and pouring directly into the

spray area. The ice machine will automatically time out

a ten minute sanitizing cycle, followed by eight rinse

cycles, and stop. The CLEAN light will turn off to

indicate the sanitizing cycle is complete. This entire

cycle lasts approximately 30 minutes.

8) The ice machine will automatically continue from the

previous point before the cleaning cycle was initiated.

If the ice machine was in the ice making cycle, the

control board will start ice making again. If it was in the

off cycle, the control board will turn off.

WATER

SHUTTERS

Location of water shutters.

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Ice Machine Care

Cleaning

STAINLESS STEEL

CONDENSER CLEANING

To clean stainless steel surfaces of the ice machine, use

a soft, nonabrasive stainless steel cleaner like Signature

polish and apply with a soft lint-free cloth.

A dirty condenser restricts airflow, resulting in excessively

high operating temperatures. This reduces ice production

and shortens component life. The condenser should be

cleaned every three to six months or after a prolonged

shutdown.

Signature polish is available from Signature Limited

Laboratory, P. O. Box 13436, Dayton, Ohio 45413, or call

877-376-5474.

The condenser of the ice machine is located at the bottom

of the unit, behind the kickplate. Refer to the illustration

below. To clean, follow these steps:

To bring out the natural luster of the stainless steel, lightly

wipe the surface with a water-dampened microfiber cloth

followed by a dry polishing chamois. All work should

follow the grain direction of the finish. Better results are

obtained by keeping the cloth in continuous contact with

the stainless steel.

1) Remove the four screws attaching the kickplate and tilt

forward. Clean kickplate openings before replacing.

2) Clean the outside of the condenser with a soft brush or

a vacuum with a brush attachment. Clean from top to

bottom, not side to side. Be careful not to bend the

condenser fins.

Do not use a metallic or highly abrasive cleaner or

cloth, as this will scratch the stainless steel finish.

3) Using a flashlight, check for dirt between the fins. If dirt

remains between the fins or if the condenser fins are

bent or flattened, contact Sub-Zero factory certified

service.

Before cleaning the condenser, shut off power to the

unit at the control panel. Wear gloves to avoid injury

from sharp condenser fins.

CONDENSER

Vacuum condenser.

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Ice Machine Care

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Maintenance

WATER FILTER REPLACEMENT

PROLONGED SHUTDOWN AND WINTERIZATION

The water filter should be replaced every six months or

after a prolonged shutdown. To replace the water filter,

incoming water does not need to be turned off. The ice

machine is equipped with an auto bypass feature which

bypasses the filter when it is removed.

Special precautions must be taken if the ice machine is to

be removed from service for an extended period of time or

exposed to ambient temperatures of 32°F (0°C) or below.

Follow these steps:

1) Perform a cleaning and sanitizing procedure to prevent

IMPORTANT NOTE: Poor water quality may require more

mildew growth.

frequent water filter replacement.

2) Disconnect the electrical power at the circuit breaker or

To remove, turn the water filter one-quater turn counter-

clockwise and it will pop out. Refer to the illustration

below. Reverse the process to install the new water filter.

service panel.

3) Turn off the water supply.

4) Remove the water from the water reservoir.

Replacement water filters can be ordered by calling

800-222-7820 or online at subzerowolfstore.com.

5) Disconnect the incoming water supply line at the rear

of the ice machine and allow it to drain.

6) Disconnect the vinyl hose from the water pump and

allow it to drain.

7) Make sure water is not trapped in any of the water

supply or drain lines. Compressed air can be used to

blow out the lines.

WATER

FILTER

8) Use a spray bottle with a solution of 1 tablespoon

(15 ml) sanitizer to 1 gallon (3.8 L) water and spray all

interior surfaces. Do not rinse, allow it to air dry.

9) Block the door partially open to provide air exchange

and prevent mildew growth.

Water filter replacement.

If water is allowed to remain in the ice machine in

freezing temperatures, damage to some components

could result. Damage of this nature is not covered by

the warranty.

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Troubleshooting Guide

Troubleshooting

If your ice machine is not operating properly, use the

following troubleshooting guide before contacting

Sub-Zero factory certified service. This guide will save

you time and trouble and may help you avoid the expense

of a service call.

Freeze cycle is long, low ice production.

•

Water temperature is too high. Connect a cold water

supply, verify that check valves in faucets and other

equipment are functioning correctly.

•

Dirty condenser. Clean condenser, refer to page 10.

Vents in kickplate are obstructed. Remove obstruction.

Ice machine does not operate.

Ambient air temperature is too high. Ambient air

temperature must be between 50°F (10°C) and 100°F

(40°C) for indoor models and between 50°F (10°C) and

110°F (45°C) for outdoor models.

•

Press the POWER key pad to turn on the ice machine.

Verify that it is plugged into a 115 V AC outlet.

•

Check the household fuse or circuit breaker to see if it

has been blown or tripped. A power outage may also

have caused a disruption in service.

•

Water filtration is poor. Replace water filter, refer to

page 11.

•

Bin thermostat may need adjustment, refer to page 7.

Water inlet valve is not working properly. Turn off ice

machine. If water continues to enter ice machine, the

water inlet valve must be replaced, contact Sub-Zero

factory certified service.

Drain pump safety switch is open. Verify that the line is

not kinked or crimped before calling for service.

Ice machine operates, but no ice is produced.

•

Refrigeration problem. Contact Sub-Zero factory

certified service.

•

No water is being supplied to ice machine. Connect

water supply.

•

Incorrect incoming water pressure. Water pressure

must be 20 psi (1.4 bar) to 80 psi (5.5 bar). If a reverse

osmosis system is used to supply water, it may not

provide adequate, constant water pressure.

Poor ice quality, cubes are shallow, incomplete or white.

•

Ice machine is dirty. Follow the cleaning and sanitizing

procedure on page 9.

Water filtration is poor. Replace water filter, refer to

page 11.

•

Spray nozzles blocked with mineral buildup. Clean and

sanitize the ice machine, refer to page 9.

Water softener is not working properly (if applicable).

Repair the water softener.

Ambient air temperature is too high or too low. Ambient

air temperature must be between 50°F (10°C) and 100°F

(40°C) for indoor models and between 50°F (10°C) and

110°F (45°C) for outdoor models.

Poor incoming water quality. Consult a qualified

professional to test the water quality and recommend

appropriate water treatment.

•

Water filter is clogged. Replace water filter, clean and

sanitize ice machine and clean condenser. Refer to

pages 8–11.

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Service Information

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If you do need service, be sure to have the model and

serial number of your unit when you call. The numbers are

listed on the product rating plate. Refer to the illustration

on page 3 for location of the rating plate.

BEFORE CALLING FOR SERVICE

Before calling Sub-Zero factory certified service, refer to

the troubleshooting guide on the previous page.

For warranty purposes, you will also need the date of

installation and the name of your authorized Sub-Zero

dealer. Record this information below for future reference.

PRODUCT REGISTRATION

your satisfaction. You may register by one of the following

options:

Model Number

1) Mail in the completed Sub-Zero product registration

card.

Serial Number

Installation Date

2) Register online at subzero.com.

Sub-Zero Factory Certified Service

3) Register by phone by calling Sub-Zero customer care

at 800-222-7820.

The model and serial number of your unit are printed on

the enclosed Sub-Zero product registration card. If you

provide us with your e-mail address, we will send you

exciting new product updates and recipes as they become

available, along with information on special events.

Phone

Authorized Sub-Zero Dealer

Phone

The information and images in this guide are the copyright property of Sub-Zero, Inc. Neither this guide nor any information or images contained herein may be

Wolf, Wolf & Design, Wolf Gourmet, W & Design and the color red as applied to knobs are registered trademarks and service marks of Wolf Appliance, Inc.

Sub-Zero, Sub-Zero & Design, Dual Refrigeration, Constant Care and The Living Kitchen are registered trademarks and service marks of Sub-Zero, Inc.

(collectively, the“Company Marks.”) All other trademarks or registered trademarks are property of their respective owners in the United States and other countries.

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Sub-Zero Products Limited Warranty

FOR RESIDENTIAL USE ONLY

FULL TWO YEAR WARRANTY*

For two years from the date of original installation, your Sub-Zero product warranty covers all parts and labor

to repair or replace, under normal residential use, any part of the product that proves to be defective in

materials or workmanship. All service provided by Sub-Zero under the above warranty must be performed by

Sub-Zero factory certified service, unless otherwise specified by Sub-Zero, Inc. Service will be provided during

normal business hours.

FULL FIVE YEAR SEALED SYSTEM WARRANTY

For five years from the date of original installation, your Sub-Zero product warranty covers all parts and labor

to repair or replace, under normal residential use, the compressor, condenser, evaporator, drier and all con-

necting tubing that prove to be defective in materials or workmanship. All service provided by Sub-Zero under

the above warranty must be performed by Sub-Zero factory certified service, unless otherwise specified by

Sub-Zero, Inc. Service will be provided during normal business hours.

LIMITED TWELVE YEAR SEALED SYSTEM WARRANTY

For twelve years from the date of original installation, your Sub-Zero product warranty covers all parts to repair

or replace, under normal residential use, the compressor, condenser, evaporator, drier and all connecting tubing

that prove to be defective in materials or workmanship.

TERMS APPLICABLE TO EACH WARRANTY

The warranty applies only to products installed for normal residential use. The warranty applies only to products

installed in any one of the fifty states of the United States, the District of Columbia or the ten provinces of

Canada. This warranty does not cover any parts or labor to correct any defect caused by negligence, accident

or improper use, maintenance, installation, service or repair.

THE REMEDIES DESCRIBED ABOVE FOR EACH WARRANTY ARE THE ONLY ONES THAT SUB-ZERO, INC.

WILL PROVIDE, EITHER UNDER THIS WARRANTY OR UNDER ANY WARRANTY ARISING BY OPERATION OF

LAW. SUB-ZERO, INC. WILL NOT BE RESPONSIBLE FOR ANY CONSEQUENTIAL OR INCIDENTAL DAMAGES

ARISING FROM THE BREACH OF THIS WARRANTY OR ANY OTHER WARRANTY, WHETHER EXPRESS,

IMPLIED OR STATUTORY.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above

limitation or exclusion may not apply to you. This warranty gives you specific legal rights and you may also have

other legal rights that vary from state to state.

To receive parts and/or service and the name of Sub-Zero factory certified service nearest you, contact

Sub-Zero, Inc., P.O. Box 44848, Madison, WI 53744; check the contact & support section of our website,

subzero.com or call 800-222-7820.

*Stainless steel doors, panels, handles, product frames and interior surfaces are covered by a limited 60-day

parts and labor warranty for cosmetic defects.

*Replacement water filters and air purification cartridges are not covered by the product warranty.

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Sub-Zero Outdoor Products Limited Warranty

PRODUCT MUST BE APPROVED FOR OUTDOOR USE, DESIGNATED BY MODEL AND SERIAL NUMBER

FOR RESIDENTIAL USE ONLY

FULL ONE YEAR WARRANTY*

For one year from the date of original installation, your Sub-Zero product warranty covers all parts and labor