Subzero Wolf UC-24C User manual

1-2

#7031931 - Revision A - June, 2014

General Information UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000)

IMPORTANT SAFETY INFORMATION

Below are the Product Safety Labels used in this manu-

al. The "Signal Words" used are WARNING or CAU-

TION.

When reviewing this manual, please note these differ-

ent Product Safety Labels placed at the beginning of

certain sections of this manual. You must follow the

instructions given in the boxes below the Product

Safety Labels in order to avoid personal injury and/or

product damage.

The sample Product Safety Labels below illustrate the

precautions that should be taken when the signal word

is observed.

INTRODUCTION

This Technical Service Manual has been compiled to provide the most recent information on safety, installation,

operation, features, troubleshooting, wiring diagrams, and repair procedures for the Under Counter Series starting

with serial number 3603000. This information will enable the service technician to troubleshoot and diagnose mal-

functions, perform necessary repairs, and return an Under Counter Series appliance to proper operational status.

The service technician should read the complete instructions contained in this technical service manual before initiat-

ing any repairs.

INDICATES THAT HAZARDOUS OR UNSAFE PRAC-

TICES COULD RESULT IN SEVERE PERSONAL

INJURY OR DEATH

Indicates that hazardous or unsafe practices could

result in minor personal injury or product and/or

property damage

In addition, please pay attention to the signal word

“NOTE”, which highlights information that is especially

important for the topic being covered.

This manual is designed to be used by Authorized Service Personnel only. Sub-Zero Group, Inc. assumes

no responsibility for any repairs made on Sub-Zero refrigeration units by anyone other than Certified

Service Technicians.

Information and images contained in this manual are the copyright property of Sub-Zero Group, Inc. Neither this

manual nor any information or images contained herein may be copied or used in whole or in part

without the express written consent of Sub-Zero Group, Inc.

TECHNICAL ASSISTANCE

If you should have any questions regarding a Sub-Zero

appliance and/or this manual, please contact:

Sub-Zero Group, Inc.

ATTN: Service Department

P.O. Box 44988

Madison, WI 53744-4988

Customer Assistance

Phone #: (800) 222 - 7820

Facsimile #: (608) 441 - 5887

Technical Assistance

(For Technicians in Customer’s Homes Only)

Phone #: (800) 919 - 8324

Parts / Warranty Claims

Phone #: (800) 404 - 7820

Facsimile #: (608) 441 - 5886

Service Department e-mail Address:

[email protected]

Main Office Hours:

8:00 AM to 5:00 PM Central Time

Monday through Friday

(24/7 Phone Coverage)

1-3 #7031931 - Revision A - June, 2014

UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000) General Information

Section 1 - General Information 1-1

Introduction ....................................................................... 1-2

Important Safety Information ............................................ 1-2

Technical Assistance ........................................................ 1-2

Table of Contents .............................................................. 1-3

Warranty Information ........................................................ 1-5

Model Description ............................................................. 1-6

Section 2 - Installation Information 2-1

Installation Considerations ................................................ 2-2

Site Preparation ............................................................. 2-2

Opening Dimensions .................................................. 2-2

Undercounter Models .............................................; 2-2

Dual Installation ...................................................... 2-2

Electrical .................................................................... 2-3

Plumbing .................................................................... 2-3

Preparation ................................................................ 2-4

Anti-Tip Bracket ......................................................... 2-4

Installation ..................................................................... 2-5

Leveling ...................................................................... 2-5

Door Adjustment ........................................................ 2-5

Placement .................................................................. 2-5

Water Line (UC-24CI) ................................................ 2-6

Anchoring ................................................................... 2-6

Panel Installation ........................................................... 2-7

Custom Door Panel ................................................... 2-7

Models UC24R and UC-24C(I) .............................. 2-7

Models UC24BG ..................................................... 2-8

Full Scale Template ....................................................... 2-9

Section 3 - Electronic Control System Information 3-1

Electronic Control Terminology &

Component Descriptions ................................................... 3-2

Electronic Control System Overview ................................. 3-3

Control Board Layout & Summary Table ......................... 3-4

Control Panel Layout ........................................................ 3-5

Basic Electronic Control Input Operations ...................... 3-5

Unit Power ON/OFF ...................................................... 3-5

Adjusting Set-Point (Temp. Adjustment) ...................... 3-6

Door Ajar Alarm ON / OFF ............................................ 3-6

Unique Electronic Control Input Operations ..................... 3-7

Temperature Units Selection (UC-24C) ......................... 3-7

Temperature Units Selection (UC-24B/R/RO) ............... 3-8

Sabbath Mode ............................................................... 3-9

Showroom Mode........................................................... 3-10

Functions of Electronic Control System ......................... 3-11

Display Zone Temperatures ........................................ 3-11

Supply Power to Lighting System .............................. 3-11

Regulate Freezer Zone Temperature (UC-24C) .......... 3-12

Regulate Refrigerator Zone Temperature (UC-24C) ... 3-13

Regulate Refrig. Zone Temp. (UC-24B/R/RO) ............ 3-14

Minimize Condensation on Glass Door (UC-24B) ....... 3-15

Freezer Adaptive Defrost (UC-24C) ............................ 3-16

Refrigerator Fan-Assisted, Off-Cycle Defrost

(UC-24B/R/RO) ........................................................... 3-17

Monitor Compressor Run - Display SERVICE ............ 3-18

Possible Error Indicators ................................................. 3-19

Troubleshooting Input Operations ................................... 3-20

Diagnostic Mode (Actual Temp. Display Mode) .......... 3-20

Thermistor Location Code Tables .......................... 3-20

Diagnostic Mode Indicators ..................................... 3-21

Error Code Table ..................................................... 3-21

Clearing Non-Flashing “SERVICE” & Error Codes .. 3-22

Manual Component Activation Mode .......................... 3-23

Temperature Log Recall Mode .................................... 3-24

Compartment Temperature History Only ................. 3-24

Compartment & Evaporator Temperature History .... 3-25

Temperature Log Event Indicators ........................... 3-26

Temperature Log Index Chart .................................. 3-27

Service Input Operations ................................................. 3-28

Automatic Entry Model Configuration Mode ................ 3-28

Model Code Table .................................................... 3-28

Manual Entry Model Configuration Mode .................... 3-29

Manual Freezer Evaporator Defrost (UC-24C) ............ 3-30

Section 4 - Sealed System Information 4-1

HFC-134a Refrigerant Service Information ...................... 4-2

134a Refrigerant Caution ............................................... 4-2

General Rules for Working with 134a Refrigerant ........ 4-2

Sealed System Repair Procedures Table ...................... 4-3

Sealed System Operation ................................................ 4-4

Sealed System Refrigerant Flow Diagrams ..................... 4-6

Section 5 - Air Flow & Fan Blade Spacing 5-1

Model UC-24B/R/RO ......................................................... 5-2

Model UC-24C ................................................................... 5-2

TABLE OF CONTENTS

Page # Page #

1-4

#7031931 - Revision A - June, 2014

General Information UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000)

Section 6 - Icemaker Information 6-1

Modular Icemaker ........................................................... 6-2

Modular Icemaker Operation ...................................... 6-2

Additional Icemaker Operation Notes ......................... 6-3

What Happens During Ejector Blade Rotation ............ 6-3

Modular Icemaker Test Procedures ................................ 6-4

Voltage Tests ................................................................ 6-4

Continuity Tests & Thermostat Inspection ................... 6-4

Water Fill Adjustment ...................................................... 6-5

Icemaker Disassembly .................................................... 6-5

Module/Motor Assembly ............................................. 6-5

Mold/Heater Assembly ............................................... 6-5

Ejector Blades and/or Ice Stripper .............................. 6-5

Icemaker Thermostat ................................................. 6-5

Section 7 - Component Access and Removal 7-1

WARNINGS & CAUTIONS .............................................. 7-2

Model UC-24B ................................................................. 7-3

Exterior Cosmetic / Mechanical Components ............... 7-3

Interior Cosmetic / Mechanical Components ............... 7-5

Unit Tray Mechanical Components .............................. 7-10

Sealed System Components ....................................... 7-11

Model UC-24C ................................................................ 7-13

Exterior Cosmetic / Mechanical Components ............. 7-13

Interior Cosmetic / Mechanical Components .............. 7-15

Unit Tray Mechanical Components ............................. 7-21

Sealed System Components ...................................... 7-23

Model UC-24R and UC-24RO ...................................... 7-25

Exterior Cosmetic / Mechanical Components ............ 7-25

Interior Cosmetic / Mechanical Components .............. 7-27

Unit Tray Mechanical Components ............................. 7-31

Sealed System Components ....................................... 7-32

Section 8 - Troubleshooting Guides 8-1

Troubleshooting Guides .................................................... 8-2

How to Use the Error Code Troubleshooting Guide ......... 8-2

Error Code Table ........................................................... 8-2

Error Code Troubleshooting Guide ................................... 8-3

How to Use the General Troubleshooting Guide .............. 8-6

Temperature Problem Instructions ................................ 8-6

Thermistor Location Code Tables ................................ 8-6

General Troubleshooting Table of Contents ...................... 8-7

General Troubleshooting Guide ........................................ 8-8

Sealed System Diagnostic Tables ................................. 8-15

Normal Operating Pressures ....................................... 8-15

Pressure Indications .................................................... 8-15

Temperature/Pressure Correlation ............................... 8-16

Membrane Switch / Ribbon Cable Test .......................... 8-17

Page # Page #

Section 9 - Technical Data Tables 9-1

Model UC-24B ................................................................... 9-2

Model UC-24C ................................................................... 9-3

Model UC-24R / UC-24RO ................................................ 9-4

Section 10 - Wiring Diagrams 10-1

UC-24C Wiring Diagram.................................................. 10-2

UC-24C Wiring Schematic ........................................... 10-3

UC-24B / UC-24R / UC-24RO Wiring Diagram................ 10-4

UC-24B / UC-24R / UC-24RO Wiring Schematic ........ 10-5

1-5 #7031931 - Revision A - June, 2014

UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000) General Information

Figure 1-1. Serial Tag Layout

(The serial number tag is located on the upper left side wall of the compartment.)

WARRANTY INFORMATION

This page summarizes the 2, 5 & 12 Year Warranty

supplied with every unit (except the model UC-24RO),

as well as the two special warranties: The Non-

Residential Warranty which applies to units installed in

non-residential applications, and the Display/Model

Home Warranty which applies to distributor or dealer’s

display units and units in model homes, sold three

years after date of manufacture. The last entries on

this page are details and notes about the warranties.

TWO, FIVE & TWELVE YEAR Warranty Summary

• Two Year TOTAL PRODUCT Warranty, *parts & labor.

• Five Year SEALED SYSTEM Warranty, **parts &

labor.

• Sixth through Twelfth Year LIMITED SEALED SYS-

TEM Warranty, sealed system **parts only.

ONE & FIVE YEAR Non-Residential Warranty

Summary (Example: Office, Yacht, etc. and the

model UC-24RO)

• One Year TOTAL PRODUCT Warranty, *parts & labor.

• Five Year LIMITED SEALED SYSTEM Warranty,

sealed system **parts only.

ONE & FIVE YEAR Display/Model Home Warranty

Summary (Display units sold three years after date

of manufacture)

• One Year TOTAL PRODUCT Warranty, *parts & labor.

• Five Year LIMITED SEALED SYSTEM Warranty,

sealed system **parts only.

Warranty Details:

* Total Product Parts includes, but is not limited to the

following:

Electronic Control System Components, Switches, Fan

Motors & Blades, Defrost & Drain Heaters, Defrost

Terminators, Drain Pans, Drain Tubes, Wiring, Light

Sockets & Bulbs, Icemakers, Water Valves, Door

hinges, Compressor Electricals, etc. . .

** Sealed System Parts includes the following:

Compressors, Condensers, Evaporators, Filter-Driers,

Heat-exchangers, All Tubing That Carries the Freon.

NOTE: Condenser Fan Motors, Freon, Solder and

compressor electricals are NOT considered sealed

system parts.

Warranty Notes:

• All warranties begin at the time of the unit's initial

installation.

• All Warranty and Service information collected by Sub-

Zero is arranged and stored under the unit serial num-

ber, and when provided and/or available, the cus-

tomer's last name.

NOTE: Sub-Zero still requests that you have the

model and serial number available whenever contact-

ing the factory or parts distributor.

• The serial number tag is located on the upper left side

wall of the compartment. (See Figures 1-1, for serial

tag layout)







 

   

 



  

  



 



 



Model Number Serial Number Manufacture Date

Refrigerant Charge Total Amps Refrigerant Type

1-6

#7031931 - Revision A - June, 2014

General Information UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000)

MODEL DESCRIPTIONS

This page briefly describes the models covered in this manual, which are UC-24B, UC-24C, UC-24R and UC-24RO.

Model UC-24B (Figure 1-2)

Under Counter Series, 24” Width, Beverage Center

•Exterior Dimensions = 34” H x 23-7/8” W x 24” D

• One (1) Adjustable Wine/Beverage Storage

Shelf/Rack

• Two (2) Adjustable Glass Shelf

• One (1) Stationary Shelf

• One (1) Utility Bin

• Full-View Glass Door

Model UC-24C (Figure 1-3)

Under Counter Series, 24” Width, Combination -

Refrigerator / Freezer

•Combination Refrigerator Temperature Zone over

Freezer Temperature Zone

•Exterior Dimensions = 34” H x 23-7/8” W x 24” D

• One (1) Wine/Beverage Storage Shelf/Rack

• One (1) Adjustable Glass Shelf

• One (1) Stationary Shelf

• One (1) Door Shelf

• Automatic Icemaker

• Automatic Defrost

Model UC-24R (Figure 1-4)

Under Counter Series, 24” Width, All Refrigerator

•One Refrigerator Temperature Zone

•Exterior Dimensions = 34” H x 23-7/8” W x 24” D

• Two (2) Adjustable Glass Shelf

• One (1) Stationary Glass Shelf

• One (1) Utility Bin

• Two (2) Door Shelves

(Bottom Door Shelf Holds 2-liter Bottles)

Model UC-24RO (Figure 1-4)

Under Counter Series, 24” Width, All Refrigerator for

Outdoor Use

•One Refrigerator Temperature Zone

•Exterior Dimensions = 34” H x 23-7/8” W x 24” D

• Two (2) Adjustable Glass Shelf

• One (1) Stationary Glass Shelf

• One (1) Utility Bin

• Two (2) Door Shelves

(Bottom Door Shelf Holds 2-liter Bottles)

• Door Lock

Figure 1-3. Model UC-24C

Figure 1-4. Model UC-24R & UC-24RO

Figure 1-2. Model UC-24B

2-2

#7031931 - Revision A - June, 2014

Installation Information UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000)

INSTALLATION CONSIDERATIONS

This section covers some of the more common installation issues seen by a Service Technician. An improper instal-

lation, though not a valid service issue, has the potential to lead to a call for service. Installation related complaints

could include, but are not limited to: Unit leveling, unit movement, door misalignment, door not sealing, internal frost

or condensation, exterior condensation, warm compartment temperatures, etc.

NOTE: If additional installation information is needed, refer to the complete Installation Manual, or contact the Sub-

Zero Service Department.

Opening Dimensions

UNDERCOUNTER MODELS

OPENING WIDTH

34 1/2"

(876)

OPENING

HEIGHT

24" (610)

OPENING

DEPTH

TO P VIEW

SIDE

VIEW FR ONT VIEW

OPENING WIDTH W

UC-24R 24" (610)

UC-24BG 24" (610)

UC-24C(I) 24" (610)

UC-24RO 24" (610)

DUAL OPENING WIDTH W

Two 24" (610) Models 48 1/8"(1222)

Dual installation kit required.

DUAL INSTALLATION

WITHOUT FILLER STRIP FILLER STRIP

Opposite hinges.

Same side hinges.

If two units are installed side by side, a dual installation kit

may be required. Installations without a custom ller strip

require a dual installation kit. If a dual installation kit is not

specied, a 2" (51) ller strip is recommended between units.

Dual installations without a ller strip can only be accomplished

using two units with opposite hinges. Refer to the

illustrations below.

Dual installation kits are available through an authorized

Sub-Zero dealer. For local dealer information, visit the nd a

showroom section of our website, subzero.com. For questions

regarding the installation, call Sub-Zero customer care

at 800-222-7820.

Site Preparation

Electrical

ELECTRICAL REQUIREMENTS

Electrical Supply 115 VAC, 60 Hz

Service 15 amp

Receptacle 3-prong grounding-type

WARNING

Do not use an extension cord, two-prong adapter or

remove the power cord ground prong.

Plumbing

PLUMBING REQUIREMENTS

Water Supply 1/4" OD copper, braided

stainless steel or PEX tubing

Pressure 20–100 psi (1.4–6.9 bar)

Excess Line for Connection 36" (914)

3" (76)

15 1/2"

(394)

(51)

LEFT SIDE

OF OPENING

FLOOR

Electrical supply location.

3" (76)

15 1/2"

(394)

(51)

LEFT SIDE

OF OPENING

AREA EXTENDS 1/2"(13)

FOR WARD ON FLOOR

Water supply location.

Installation must comply with all applicable electrical codes.

The electrical supply should be located within the shaded

area shown in the illustration below. A separate circuit,

servicing only this appliance is required.

IMPORTANT NOTE: The electrical outlet must be placed so

the grounding prong is to the right of the thinner blades.

The outlet must be ush with the back wall.

Model UC-24RO is designed and safe for use in outdoor

applications. When installed outdoors, a ground fault

circuit interrupter (GFCI) is required to reduce the risk of

electrical shock. A GFCI is not recommended for use with

other undercounter models and may cause interruption of

operation.

Installation must comply with all applicable plumbing codes.

For model UC-24CI, the water supply should be located

within the shaded area shown in the illustration below.

The water supply line should be connected to the house

supply with an easily accessible shut-o valve. Do not use

self-piercing valves.

A reverse osmosis system can be used provided there is

constant water pressure of 20–100 psi (1.4–6.9 bar) supplied

to the unit at all times. A copper line is not recommended

for this application.

2-3 #7031931 - Revision A - June, 2014

UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000) Installation Information

Site Preparation

2-4

#7031931 - Revision A - June, 2014

Installation Information UNDER COUNTER SERIES

UNDER COUNTER SERIES (SWS #3603000)

(SWS #3603000)

Preparation Anti-Tip Bracket

WARNING

To prevent the unit from tipping forward, the anti-tip

bracket must be installed.

1/4"(6)

ANTI-TIP

BRA CKET

Anti-tip bracket.

To operate properly, the door must open a minimum of 90°.

Use a minimum 3" (76) ller in corner installations to assure

a 90° door opening.

Uncrate the unit and inspect for damage. Remove and

recycle packing materials. Do not discard the kickplate, antitip

bracket, hardware and the leveling legs which hold the

wood base to the bottom of the unit.

The anti-tip bracket should be attached to the wall behind

the unit with the bracket ange located 1/4" (6) above the top

of the unit. Refer to the illustration below. Failure to properly

position the anti-tip bracket will prevent proper engagement.

Site Preparation

This manual suits for next models

Other Subzero Freezer manuals

Subzero

Subzero Wolf UC Series User manual

Popular Freezer manuals by other brands

Siemens

Siemens GU..D SERIES Instructions for use

Omcan

Omcan FR-CN-0155 instruction manual

Beko

Beko FNE290E24W user manual

Electrolux

Electrolux ARCTIS G 8 60 50-6I user manual

Electrolux

Electrolux EUF2042AOX user manual

Dometic

Dometic CoolFreeze CFX95DZ operating manual

Electrolux

Electrolux EUF7000W1 user manual

Polar Electro

Polar Electro CT330 instruction manual

MPM

MPM MPM-145-SK Series manual

SAF

SAF PRESTOTIG 200AC/DC Installation and instruction manual

Zanussi

Zanussi ZFT11407WA user manual

AEG

AEG A63190GT user manual

AEG

AEG A81000TNW0 user manual

Matsui

Matsui MUC50S15E instruction manual

NEFF

NEFF G4344X8 Instructions for use

Frigidaire

Frigidaire FV 1246 H Instruction book

Frigidaire

Frigidaire FFC13K1AW Factory parts catalog

Electrolux

Electrolux EU 2400C Instructions for use