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> ro-Series (648PRO) General information
SECTION 1
GENERAL INFORMATION
1-1 43758440 - Revision B - November, 2006
General Information
Pro-Series (648PRO)
INTRODUCTION
This Technical Service Manual has been compiled to provide the most recent service information on the Sub-Zero
Pro Series (Currently only the model 648PRO). This information will enable the service technician to troubleshoot
and diagnose malfunctions, perform necessary repairs, and return a unit to proper operational condition.
The service technician should read the complete instructions contained in this manuai before initiating any repairs on
a Pro Series Unit.
IMPORTANT SAFETY INFORMATION
Below are Product Safety Labels used in this manual.
The "Signal Words" used are WARNING or CAUTION.
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 of 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.
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, and/or product dam-
age, and/or property damage.
In addition, please pay attention to the signal word
“NOTE”, which highlights information that is espe-
cially important for the topic being covered.
TECHNICAL ASSISTANCE
If you should have any questions regarding the
600-2 Series and/or this manual, please contact:
Sub-Zero Freezer Company, Inc.
ATTN: Service Department
P.O. Box 44988
Madison, WI 53744 - 4988
Customer Service & Parts / Warranty Claims
Phone #: (800) 222 - 7820
Technical Assistance
Phone #: (800) 919 - 8324
Customer Service & Technical Assistance
Facsimile #: (608) 441 - 5887
Parts / Warranty Claims
Facsimile #: (608) 441 - 5886
Service Department E-Mail Address:
[email protected]
Office Hours:
7:00 AM to 7:00 PM Central Time
Monday through Friday
This manual is designed to be used by Authorized Service Personnel only. Sub-Zero Freezer Co., Inc.
assumes no responsibility for any repairs made on Sub-Zero refrigeration units by anyone other than
Authorized Service Technicians.
Information and images contained in this manual are the copyright property of Sub-Zero Freezer Company, 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 Freezer Company, Inc.
© Sub-Zero Freezer Company, Inc, all rights reserved.
#3758440 - Revision B - November, 2006 1-2
Pro-Series (648PRO)
TABLE OF CONTENTS
Page #
Section 1 - General Information... 1-1
Introduction ........... ..eeeverererereen ener nareiac er e RCA 1-2
Important Safety Information eee... 1-2
Technical ASSISIONCE ....uscaanrerserenenssaraanseanrann ren arannrnc nee 1-2
Table of Contents …..…..………..…ercrerrarsssseannantannnnentarrecanc cam nn 1-3
Warranty Information ….....….…..…isscsasrenmmnntens ennrrsanvaane annees 1-5
Model! Features ….……...…......ssrieenvenasaneensassa sean tan arane sacs 1-6
Model Specifications …....…..…...….…circsesssasesnensenens en sean en caaanae 1-7
i - liation In Le 1 A 2-1
Recommended Tools and Materials ser 2-2
Unit Dimensions .....................e02002vermiereere ee rare sas ansaa nan 2-3
Pre-installation Specifications .…........….….…-…..…iicresaereantanencns 2-4
Preparing the Space .…..….....…..………sveasranraannenennnneancauee 2-4
Electrical Requirements ................ ene R AS A RAM 2-4
Plumbing Requirements.....................mm.— enanas 24
Moving the Appliance... LEERE KK ER REERERE ROOT . 25
Protecting the Floor ......................- 2... eee eine... 2-5
Removing the Grille... rrrrareranencenesssanarsarau ee 2-5
installation Considerations ‚nn rer KERNE AH EEE 2-8
WARNINGS and CAUTIONS... irvine 2-6
Anti-tip Components Installation ...................e.......... 2-7
Unit LevelinG ence 2-8
Door Adjustment …......…..…arrenererementencraanaancasacauee 2-9
Drawer Adjustment............... een invari ER 2-10
Vertical Drawer Adjustment cc... 2-10
Horizontal Drawer Adjustment ...................—— e... 2-10
Water Filter Bypass .................eeesvererieenenon ee eenacaccen ene. 2-11
Section 3 - Electronic Control System ........................ 3-1
E-Control Terminology & Component Descriptions.......... 3-2
Electronic Control System Overview..............————— e... 3-3
Control Board Layout and Summary Table ...............—.. 3-4
Control Panel and User Displays Layout ........................ 3-5
Basic Electronic Control Input Operations ...................... 3-6
Unit ONJOFF eee eevee sana 3-6
Adjusting Set-Point (Temp. Adjustment) ................... 3-6
Icemaker System ON/OFF-....................ecn.02 meme uen 3-7
Door Ajar Alarm Feature .................vee e. 3-7
Accent Lighting ON/OFF (Model 648PROG).............. 3-7
Unique Electronic Control Input Operations .................... 3-8
Temperature Units Selection Mode ............................ 3-8
Showroom Mode coon eee 3-9
Sabbath Mode ................. eee cn cr sa ess a a caen 3-10
Manual Zone Disable Mode...................———e— mee. 3-11
Manual Freezer Evaporator Defrost .................———. 3-11
Functions of Electronic Controf System .......................... 3-12
Supply Power to Lighting System sans 3-12
Monitor, Display and Regulate Zone Temperatures .. 3-13
Assist in Control of Variable Speed Compressors .... 3-14
Control Refrigerator Dual Refrigerant Valve .............. 3-15
Control Condenser Fan Operation ............................ 3-16
Minimize Condensation on Ref. Door Glass .............. 3-17
Monitor and Control Refrigerator
1-3
General Information
Page #
Fan-Assisted, Off-Cycle Detrost ...............2eenmecenee 3-18
Monitor and Control “Adaptive Defrost”
of Freezer Evaporator ................—————.——_..eereenveeen nnnner 3-19
Monitor Compressor Run Duration, Display if
Service is Needed ..................... Nareooananarnaanacanianarec amena 3-20
Monitor Ice Making System and Display
if Service is [email protected]…..……nrencennnenanesn casa araa anna na es 3-21
Monitor Water Filter Time in Use and
Display when it's Time to Replace It .......................... 3-22
Self Diagnostics of Electronic Control System .......... 3-23
Possible Error INQICAÏOTS …….....……carsenssanrensereensancecaaar sara ce 3-24
Service Mode (Troubleshooting input Operations} .......... 3-25
Service Mode Menu …..…..….......……errarrrenrenerenrensanarnnee 3-26
Non-Service Mode Display Information 3-27
Initiating Service Mode ..…..….........rrrensranarennarnnn ennerane 3-27
Service Mode, 1) Diagnostics...............— 3-28
Diagnostics 1) Self Test ....... OS 3-28
Diagnostics 2) Error History ...................eee=....e 3-29
Error Code Table ..............—..... emmm 3-30
Diagnostics 3) Thermistors ................. er. 3-31
Diagnostics 4) Activate Zone .......................... 3-31
Diagnostics 5) Statistics ..................c.ex22exrevera. 3-32
Service Mode, 2) Operational Status .................... 3-33
Op Status 1) Zone Status .............cnereeeee.. 3-33
Op Status 2) Ice Maker... 3-34
Service Mode, 3) Model Information 3-34
Service Mode, 4) Version Information .................. 3-35
4 - ! rmation........................ 4-1
HFC 134a Refrigerant Information ....................c..cccuuun. 4-2
General 134a Rules …....….....crarerensaaarrnarenveesenenaa cn ass na sans 4-2
Sealed System Repair Procedures rares 4-3
Freezer Sealed System Operation ...............— ee... e... 4-4
Refrigerator Sealed System Operation ........................... 4-6
Retrigerant Flow Diagrams ...................... creeme. EEE 4-8
Section 5 - Airflow & Fan Blade Spacing .................... 5-1
Model 648PRO ................——e...sresrrecrnienirererenerer ere EEE 9-2
Section 6 - Icemaker information ........................——.. 6-1
ifcemaker Systern Information ...................————————.—.._....... 6-2
icemaker Components ............... een im i00iniienncenr ne 6-2
Icemaker Operation ........... e... —eeeeieieneooneennean nena REED 6-3
Manually Stopping Icemaker. coccinea, 6-8
Manually Starting Icemaker........................ ese. 6-9
Adjust Waler Fill Level....................... iin 6-9
icemaker Fault Testing...............———————.w er... eresmarvernere 6-10
#3758440 - Revision B - November, 2006
General Information
Page #
Section 7 - Component Access and Removal ............ 7-1
Table of Contents, Wamings and Cautions...................... 7-2
Exterior Cosmetic and Mechanical .............................. 7-3
Kickplate ............... enero nera Dec eee D eee 7-3
Drain [email protected] enano ro e raaa rana rene enTes 7-3
DoorDrawer Handiles ..................eeeerevicieiion ze e e 7-3
POOF ccc rare 7-3
Drawer Assembly .......................eeenveriireiareener eee ee 7-4
Door/Drawer Gaskets ...................... mee nene EEE 7-4
Cabinet HINGes O TT ns 7-4
Water FIOr eee eevee aren 7-5
Water Valve ..................rvicinorecanneie nión ene anna eee 7-5
Grille ASSEMDIY cover 7-6
Gas Grille Spring ............... e... eee een recen 7-6
User DiSpIAYS........…srrereararanensananansananaseaan er aan recu anne 7-6
Main Controller Board... …venrersnanrannenrararnsannene 7-7
Unit SAFOUG coerce n ee eee 7-7
Refrigerator Interior Cosmetic / Mechanical .............. 7-8
SHA BIT DS 7-8
Shelf ASSEMDIY o.oo arena 7-8
Upper Light DIffuser ................eeeeviviriinión ión e e De 7-8
LED Accent Lights ..................eeecerurrnirirainrer enanos 7-9
Controf Panel ..….......…rirereerrannrenrareannasanns senrsasa e 7-9
Upper Light Assembly ........................ee.xeemerei reee 7-9
Upper Evaporator Cover ........... nr EEE 7-10
Upper Evaporator Fan Shroud Assembly .................. 7-10
Upper Evaporator Fan Assembly.................ccc............ 7-10
Upper Compartment Thermistor .............. 2... 7-11
Upper Evaporator Thermistor ..............2..2eoncscnriiónias 7-11
Crisper Lid Assembly ...................e.eesmeceearncean De 7-12
Drawer Light Socket .....................e.... 220000000 rnansne 7-12
Drawer Closer .................eennzanerreniccnenecern er eee eee 7-12
Drawer Slide Assembly _..........…ernrrrenrenenanranenraca anna ne 7-12
Lower Evaporator Fan SArOUE…...…..….…cssrsarersscian ca care s 7-13
Lower Evaporator COVEF ….…..…....…rerrensaranermeansassenna ns 7-13
Lower Evaporator Fan Assembly.....….….…….-rareerersens 7-13
Lower Light Switches .....................eeesrveeereeneerer ee 7-13
Lower Compartment Thermistor ...................2eóm0ruana 7-14
Lower Evaporator Thermistor ...................eerccvorcionas 7-14
Freezer Interior Cosmetic / Mechanical ...................... 7-15
Sheilf Assembly ...................evevercerecicanienene ree eee re 7-15
Light Diffuser ...........e.eceneeccceniinorar eri in ee e e Dee ee 7-15
Shelf Assembly ............................eeeeee00ierereceere nee RE REG 7-15
Upper Freezer Light Assembly .................... ree. 7-15
Upper Freezer Duct/Cover.................. een 7-15
Freezer Bottom Shelf Assembly... 7-16
Freezer Compartment Thermistor .................e......e..... 7-16
18 BUCKET TO 7-16
Drawer Light Socket .........................eesvncericaneriacenens 7-17
Upper Evaporator Fan SRroud..................——.—. een. 7-17
Lower Evaporator Fan Shroud...........................———— 7-17
Evaporator Fan Assembly ...............e......2 2er EE 7-17
lcemaker ASSembly cocoon 7-18
Evaporator COVEF..........…….…rererrenenrarenmansaanersransranen nn as 7-18
Емарога!юг ТВепти Юг... prinerimoreravencas 7-18
Detfrost Terminator ..............eeeeercerivicaciaren 0 ta eee 7-18
Defrost Heater .....................iia nana ne nee 7-19
Drain Trough Heater .....................onereeenineena re 7-19
#3758440 - Revision B - November, 2006
Pro-Series (643PRO) Rave-zernod
Page #
Compressor Area Mechanical ..........................cc.......... 7-20
Water Filter ..........................ereeererareceninaca cananea cie 7-20
Water Valve ................emraneearneorerarorcanareenenecara receta. 7-20
Condenser Fan …........…..secrccccrcararrananrennaren ennaran names 7-20
Sealed System ......................00000i00000 AAA 7-21
Freezer High-Side Filter-Drier ................e.—— 7-21
Refrigerator High-Side Filter-Drier /
Refrigerant Valve Assembly .....................c..n.....eemcuveras 7-21
COMmpressors ..........................erieerecarecenrariccanerecueracenea 7-22
En 7-22
Evaporators ........…+crrarerranerrananasaara rene aan enaaa ane aan can ncne 7-23
Heat EXCHANGETS ……..……recccrrnerereecerreresrseasrsececcne reves cnenens 1-24
Drain Pan Heater LOOP ….…....aircssesssrascce care receanane ren enr 7-25
ection 8 - Tr | i ides coon, 8-1
Service Mode (Troubleshooting input Operations) .......... 8-2
Non-Service Mode Display Information ...................... 8-3
Initiating Service Mode ....................... 2.2.2.2... 8-3
Service Mode Menu …...…..…...rrarraneresmansancentanaars an neue 8-4
Error Code Table …….…....…..….....cnrcceerrenrenmanrrennanen ana nn ne 8-5
Sealed System Diagnostics Tables................e eee... 8-6
Normal Operating Pressures ................. e. .............. 8-6
Pressure Indications Le. ccsreareresa are nerse ua ca nan ecnenre mure 8-6
Evap Temp/Sealed System Low-Side
Pressure Correlation .................—.c.erveverecicrorernen e. 8-7
Section 9 - Technical Data ........................ee.27eeememe00.. 9-1
Model B48PRO ......................... e. ..emviicarrer nene ces 9-2
Section 10 - Wiring Diagrams 4 Schematics ............ 10-1
Model 5648PRO High Voltage Wire Diagram ................ 10-2
Model 648PRO Low Voltage Wire Diagram .................. 10-3
Model 648PRO Wire Schematic... 10-4
Model 648PRO Control Board Layout .......................... 10-5
Model 648PRO Control Board Summary Table ............ 10-5
Pro-Series (648PRO)
General information
WARRANTY INFORMATION
This page contains a summary of the 2, 5 é 12 Year
Warranty that is supplied with every Model 648PRO
unit. This is followed by a summary of 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 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 and
labor.
* Five Year SEALED SYSTEM warranty, **parts and
labor.
* Sixth through Twelfth year LIMITED SEALED SYS-
TEM warranty, sealed system **parts only,
ONE 8 FIVE YEAR Non-Residential Warranty
Summary (Example: Office, Yacht, etc.)
* One Year TOTAL PRODUCT warranty, *parts and
labor.
+ Five year LIMITED SEALED SYSTEM warranty,
sealed system **parts only.
ONE 8 FIVE YEAR Display/Model Home Warranty
Summary (Display units sold three years after
date of manufacture)
* One Year TOTAL PRODUCT warranty, *parts and
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, Fan & Light
Switches, Fan Motors & Blades, Defrost & Drain
Heaters, Defrost Terminator, Drain Pan, Drain Tubes,
Wiring, Light sockets & bulbs, Icemaker, Water Valve,
Door hinges, Door closers & Cams, Compressor
Electricals, efc. . .
* > “Sealed System Parts” includes the following:
Compressors, Condenser, Evaporators, Filter-Driers,
Heat-exchangers, All Tubing that Carries the Freon.
NOTE: Condenser Fan Motors, Freon, Solder and com-
pressor 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
number. This information is now also stored under
the customer's fast name. Sub-Zero requests that you
have the model and serial number available whenever
contacting the factory or parts distributor.
» The serial number tag on SIDE-BY-SIDE models is
located by the top door hinge in the freezer compart-
ment.
* The serial number tag on OVER-AND-UNDER models
is located by the top door hinge in the refrigerator
compartment.
* The serial number tag on ALL-REFRIGERATOR and
ALL-FREEZER models is located by the top door
hinge in the refrigeration compartment.
Model Number
Serial Number
— Manufacture Date
18
Eo
agb
Refrigerant Charge N
Ln | 7
Refrigerant Type
Figure 1-1. Serial Tag Layout (Reference Only, Numbers May Change)
1-5
#3758440 - Revision B - November, 2006
General Information Pro-Series (648PRO)
648PRO Side-by-Side Refrigerator / Freezer Model Features
Stainless steel
construction ———. ee
Dual refrigeration
J system
Easy-access grille
- Exterior temperature
hinge system ~~
Adjustable stainless”
steel shelves
Model 648PROG
with Glass Door o e
Automatic ice -
maker
«+ This appliance is certified by
— Star-K to meet strict religious
“. regulations in conjunction
with specific instructions Model 648PROG shown
found on www.star-k.org.
FEATURES
» Dual refrigeration—two compressors and
three evaporators keep foods fresher longer
and prevent odor transfer
» Exterior temperature display with easy-to-read
digital readouts, accurate within one degree
of your preset temperatures
» Microprocessor and interior control panel
with up-front touch controls monitor pattern-
sensing defrost and automatic service alerts
» Holiday mode—power down one or both
sides for short or extended periods
» Siide-out stainless steel bins—two, removable
bins that fit neatly under any shelf
» Crisper drawer is a touch-and-glide crisper
with a tight-seal glass lid for high humidity
» Drawers have adjustable, removable, and
interchangeable drawer dividers
» Automatic ice maker lets you retrieve filtered
ice from a stainless steel bucket
» Shelves are cantilevered and spill-proof, with
stainless steel trim (refrigerator); adjustable,
removable and 100% stainless steel (freezer)
#3758440 - Revision B - November, 2006 1-6
display
р water iter — IM THT Tm TI Microprocessor and
py —, interior control panel
Alam —— || Holiday mode
Advanced | Triple-pane UV resist-
lighting ant glass (648PROG)
Auto-close 1 Adjustable spill-proof
4 glass shelves
> Slide-out stainless
steel bins
van,
en
— Crisper drawer
ET
en a
“ Drawers with
dividers
The Sub-Zero 648PRO side-by-side refrigerator / freezer
is available in classic stainless steel and with a glass
door on Model 648PROG. The 648PRO can he built-in or,
with accessory kit, used in a free-standing application.
» Auto-close system with an advanced hinge
design lets doors finish closing automatically
» Alarm with an audible beep lets you know
when doors or drawers are left ajar
» Water filter is easy to replace and just behind
the pop-up grille, for ice as pure as it is fresh
» Easy access grille pops up to reveal the water
filter and condenser for cleaning
» Stainless steel construction and classic finish
{inside and out) for professional strength and
beauty
» Top LED lights bathe upper compartments in
a soft glow; on the refrigerator side, chan-
neled sidewall LEDs can even serve as door
area night lights {night light option available
on Model 648PROG only)
» Triple-pane UV resistant glass offers conven-
ient visibility while filtering harmful rays and
saving energy (Model 648PROG)
» UL approved for US and Canada
» Two, five and twelve year residential warranty
{exclusions apply), see warranty
sus-zero { Pro-Series (648PRO) General Information
SPECIFICATIONS a
Model 648PRO Side-by-Side Refrigerator/ Freezer
| Model 648PROG Side-by-Side Refrigerator / Freezer
with Glass Door
Overall Width 48" (1219)
Overall Height 84" (2134)
| Dept from behind face frame — 23 7/8" (606)
Depth to front of face fram 25 7/8" (657)
i Refrigerator Capacity 18.4 cu ft (521 L)
Freezer Capacity 1.7 cu ft (331 L)
Minimum Height (levelers in)
83 172" (2121)
Water Supply
Annual Energy Usage
35 pst (2.4 bar) to 120 psi (8.3 bar)
689 kwh / $58
{based on 8.29 cents per kilowatt hour)
Door Swing Clearance 28 314" (730)
Electrical Requirements 115V AC, 60 Hz
15 amp dedicated circuit
Plumbing Requirements 114" copper line
Shipping Weight
S48PRO 860 Ibs (390 kg)
648PROG 875 Ibs (397 kg)
Specifications are subject to change without notice.
1-7
#3758440 - Revision B - November, 2006
General Information Pro-Series (648PRO)
#3758440 - Revision B - November, 2006 1-8
peus-zenod Pro-Series (648PRO) Installation Information
SECTION 2
INSTALLATION
INFORMATION
Installation Information Pro-Series (648PRO)
RECOMMENDED TOOLS AND MATERIALS
Below is a list of tools and materials that should be
used during the installation of a Pro Series Unit.
* Phillips screwdriver set
« Slotted screwdriver set
* Copper tubing cutter
* 4° (1219 mm) of 1/4” (6 mm) copper tubing and
water line saddle valve.
+ Saddle valve for the water line (Part #4200880)
« Level 2° (610 mm) and 4’ (1219 mm) are recom-
mended.
* Appliance Dolly - able to support 1,000 Ibs (454kg)
with proper manpower to handle weight.
* Various sized pliers
« Wrench set
« Allen wrench set
* 1/2 (13 mm) drive socket set, with 10” (254 mm)
socket extension.
« Crescent wrenches
» Cordless drill and assorted drill bits
« Masonite, plywood, 1/8" pressed fiberboard or card-
board or some other suitable material for fioor pro-
tection.
* Moving blankets for protection of product and home.
» 6-Lobe (Torx) drive bits, or 6-Lobe screwdrivers -
(Sizes: T-10, T-15, T-20, T-25) Figure 2-1.
43758440 - Revision B - November, 2006 2-2
Pro-Series (648PRO) Installation Information
UNIT DIMENSIONAL INFORMATION
84" <— 237/8" —
Ц (2134 mm) Ш (606 mm)
—= || o a qd
L———— N] I u =i
Ld LJ Y |
| 48" @ «— 25 7/8" —
(1219 mm) (657 mm)
305/32" _,
(766 mm)
< 47 1/2" >
| (1207 mm) |
237/8" 257/8"
(606 mm) (657 mm)
BEHIND TO FRONT
FACE OF FACE
FRAME FRAME
| (Е) U 7 |
201/2" (521 mm) 283/4"
| (730 mm)
— —_—
‚|
Figure 2-2. Front, Side and Top View
2-3 #3758440 - Revision B - November, 2006
Installation Information — Pro-Series (648PRO) Peun-zenod
PRE-INSTALLATION SPECIFICATIONS
Preparing the Space
NOTE: Make sure floor under appliance is level with surrounding finished floor. Protect finished floor with masonite,
plywood, 1/8” (3 mm) pressed fiberboard, or some other suitable material before moving the appliance across it.
Electrical Requirements
To rough in the electrical outlet following the Pre-Installation Specifications. You will need a 115 Volt, 60 Hertz elec-
trical supply, with a dedicated 15 Amp fuse / circuit breaker. Also be sure to follow any local codes that apply.
The appliance comes with a three-prong grounded plug power supply cord. The appliance must be plugged into a
mating three-prong wall receptacle grounded in accordance with the National Electrical Code and local codes.
Plumbing Requirements
The unit has an automatic ice maker with a water filtration system, which operates on water pressure between 35
psi (2.4 bar) and 120 psi (8.3 bar). If the filtration system is bypassed, water pressure must be maintained between
20 psi (1.4 bar) and 120 psi (8.3 bar).
Rough in the water supply using 1/4" OD copper
tube. The water line should be routed up through the |
floor within 1/2" (13 mm) from back wall and no high- OPE DEPTH M 35” (814 mm)
er than 3" (76 mm) off the floor. If coming through 24" (610 mm) WATER LINE
the wall, make sure the water line is no more than 3" 26" (660 mm)
(76 mm) from the floor. Regardless of the routing, FLUSH SHUT-OFF
allow 3' (914 mm) excess copper tubing outside the | VALVE
wall or floor for easy connection to the unit. TOP VIEW
Locate water supply line within shaded area indicat-
4 A
ed in the Pre-installation Specifications diagram.
Use an easily accessible shut-off valve between the
water supply and unit. Do not use self-piercing
valves. A saddle valve kit (part #4200880) is avail- LOCATE ELECTRICAL
able from a Sub-Zero dealer. WITHIN SHADED AREA
It is not recommended that the appliance be con- ROUGH
nected to a softened water supply. Chemicals, such - 47 1/2" (1208 mm)
as salt from a malfunctioning softener, can damage STANDARD
the ice maker and lead to poor ice quality. if a soft- 48° (1219 mm)
i MIN HEIGHT
ened water supply cannot be avoided, be sure the REQUIRED ROUGH dE 2
I i | i TO FINISHED OPENING HEIGHT mm
softener is well maintained and operating properly. O FINISHEI ENING HEIG!
r . . . . (LEVELERS IN) FLOORING
NOTE: Do not use with water that is microbiological- 83112" 2121 mm) || 833/4" (2127 mm)
ly unsafe or of unknown water quality without ade- STANDARD STANDARD
a . 833/4" (2127 mm) ¡| 841/8" (2137 mm)
quate disinfection before or after the system. FLUSH FLUSH
Systems certified for cyst reduction may be used on
disinfected waters that may contain filterable cysts.
NOTE: Installations must meet local plumbing code WITHIN SHADED AREA
requirements.
NOTE: A reverse osmosis system can be used, if 67 (152 mm) + I
there is constant water pressure of 20 psi (1.4 bar) to Y { 3" 76 mm) | W | y
120 psi (8.3 bar) supplied to the unit at all times. In | — — 53/16"
this application, the integrated water filtration system FRONT VIEW (132 mm)
must be set to bypass mode.
Figure 2-3. Pre-install Specifications
#3758440 - Revision B - November, 2006 2-4
Pro-Series (648PRO)
Installation Information
MOVING THE APPLIANCE
After uncrating the unit, do not discard the kickplate that
is taped to the side of the refrigerator. Do not discard
the Anti-Tip Kit or hardware, you will need them to block
the installation.
Carefully move the unit from the crate base onto an
appliance dolly. Tip to one side removing styrene pads
under unit. Tip back onto appliance dolly. Retract lev-
eling legs to their uppermost position for easy move-
ment of the unit while installing. Remember this unit is
very heavy (900lbs/408kg) and encugh manpower
should be used when attempting to move this equip-
ment.
Protect the Flooring
Make sure the floor under the refrigerator is level with
the surrounding finished floor. Pushing the unit with
front leveling legs down will cause damage to the floor.
Make sure the leveling legs are in the uppermost posi-
tion prior to moving the product. Protect a finished floor
with masonite, plywood, 1/8”(3) pressed fiberboard or
some other suitable material before moving the refriger-
ator across it.
Á CAUTION
Protect any finished flooring before moving the unit in
place. This Sub-Zero product is equipped with rollers,
so it can be easily moved into place. If for any reason
the unit has been laid on its back side, you must allow
the unit to stand upright for a minimum of 24 hours
before connecting power.
Removing the Grille
In order to prevent damage to the grille, the top grille
assembly should be removed prior to moving the unit.
To remove the grille assembiy, pull out on the bottom
edge of the grille and tilt the grille frame forward (See
Figure 2-4). Disconnect the low-voltage cable which
connects the User Displays on the grille to the
Technician Display Module, and cut the two white cable
ties which attach the network cable to the right grille
support. These cables ties should be replaced once
the unit is properly installed with the extra cable ties
provided. Remove the three 7/16" bolts from base of
the grille. Remove the screw from the upper grille area
and remove the grille assembly.
| | USE PROTECTIVE
Ш CORNERS
NL TO PROTECT
| == DOOR/DRAWERS
FROM STRAPPING
Product is very heavy (900 Ibs/408kg) keep door(s)
and drawer(s) closed while moving unit and use
enough manpower to safely move unit.
A CAUTION
When using appliance dolly, make sure the strapping is
underneath the door handles and either underneath or
over the top of drawer handles. Use enclosed corner
protectors to avoid damage to stainless steel. Do not
cut corner protectors when unpacking the product.
SCREW
LOW-VOLTAGE
Figure 2-4. Grille Removal
43758440 - Revision B - November, 2006
Installation Information Pro-Series (648PRO)
INSTALLATION CONSIDERATIONS
This section covers common instaliation issues seen by Service Technicians. Improper installation, though not a
valid service issue, has the potential to lead to a call for service.
NOTE: If additional information is needed, refer to the complete Installation Guide.
AA WARNING
IF UNIT IS UNDER A SOLID SOFFIT AND CLEARANCE BETWEEN TOP OF UNIT AND SOFFIT IS GREATER
THEN 1” (25.4 mm), OR IF SOFFIT IS NOT SOLID, UNIT COULD TIP FORWARD UNDER CERTAIN LOAD
CONDITIONS. FAILURE TO INSTALL ANTI-TIP COMPONENTS AND EXTEND LEVELERS TO FLOOR
ACCORDING TO INSTALLATION MANUAL COULD RESULT IN SERIOUS INJURY OR DEATH.
MAKE SURE THERE ARE NO ELECTRICAL WIRES OR PLUMBING THAT THE SCREWS CAN COME INTO
CONTACT WITH.
Always wear safety glasses and other necessary protective devices or apparel when installing or working
with anchors.
Not recommended for use in light-weight masonry material such as block or brick. Use of core drills not
recommended to drill holes for this anchor. Not recommended for use in new concrete which has not had
sufficient time to cure.
#3758440 - Revision B - November, 2006 2-6
Pro-Series (648PRO) Installation Information
Anti-Tip Components Installation
(See Figures 2-5, 2-6 and 2-7)
NOTE: The anti-tip bracket is included and fastened to
crate base at the front of the unit.
NOTE: Use the center line reference point on the anti-
tip bracket to assure proper alignment and engagement
of the product to the anti-tip bracket,
1. Install anti-tip bracket exactly 26"(660 mm) from front
face frame, centered in the rough opening.
NOTE: The 26"(660 mm) measurement is from the
front face frame to the back of the anti-tip bracket.
2. Drilt 6 pilot holes 3/16”(5 mm) diameter maximum for
mounting anti-tip bracket to the floor.
3. Drill 6 pilot holes 3/16”(5 mm) diameter maximum,
for mounting anti-tip bracket to wall a minimum of
3/4"(19 mm) into the wall plate.
4. Install twelve 12 x 2-1/2” (64 mm) wood screws and
twelve 1/4 (6 mm) flat washers.
NOTE: If screws do not hit a wall stud in any of the
upper holes of anti-tip bracket, use the provided #8 x
1-1/47(32 mm) wood screw, 1/47(6.1 mm) flat washer
and a nylon zip-it wall anchor.
NOTE: For concrete floors use three 3/8 X 3-3/4” (10
mm x 95 mm) concrete wedge anchors to secure
anti-tip bracket to floor. Use six #12 x 2-1/2"(64 mm)
wood screws, and six 1/4”(6 mm) flat washers to
secure anti-tip bracket to wall.
| |
Finished Flooring
Underlayment
ELITE
Finished Flooring
Underayment
{hr ION
Er,
Wall Plate
Sub Flooring /
Figure 2-7. Anti-Tip, Concrete Floor Mounting
43758440 - Revision B - November, 2006
Installation Information Pro-Series (648PRO) Peve-zenod
Unit Leveling (All Models)
NOTE: The rear levelers must be in their lowest posi-
tion before unit is installed. Unit must be installed
before final leveling. If unit is anchored to cabinets,
remove anchor screws before leveling, reinstall after
leveling.
1. To level unit, first remove kickplate (See Figure 2-8).
2. To raise unit front, turn front leveler legs clockwise to
raise, counterclockwise to lower (See Figure 2-9).
3. Rear adjustment can be completed from the front of
unit through unit base. To raise unit rear, use 3/8”
(10 mm) socket wrench with an extension to turn
rear leveling bolt clockwise to raise, counterclock-
wise to lower (See Figure 2-9). Figure 2-8. Kickplate Removal
NOTE: Level is best checked at top & side of main-
frame.
Rear
Leveling —.
Bolt
Front Leveling Leg
Figure 2-9. Unit Leveling
#3758440 - Revision B - November, 2006 2-8
beue-z=nod Pro-Series (648PRO)
Door Adjustment
NOTE: Unit must be leve! before adjusting doors.
A CAUTION
When adjusting hinges it is important to keep
hinges parallel to the face of the door and side of
the cabinet. Excessive misalignment will result in
door switch malfunction. If switch is not activated
the fan will not operate and lights will remain on.
This will result in elevated cabinet temperatures.
After hinge adjustments are made, check for prop-
er functioning of door switch.
If unit is properly installed, blocked and leveled, it may
still be necessary to adjust door(s) left to right.
Adjustments are performed at top and/or bottom cabinet
hinge(s).
1. Open the vent portion of the top grille.
2. Open door to about 90 degrees and lift door off the
cabinet hinge assembly (See Figure 2-10).
Doors are very heavy. Use care and caution when
removing them.
3. Remove hinge pins (See Figure 2-12).
4. Loosen the two cabinet hinge screws 1/4 to 1/2 turn
(See Figure 2-12).
Reinstall hinge pin and door. With door open, use an
Allen wrench, and turn adjustment screw to adjust
cabinet hinge (See Figure 2-16).
6. Close door to check alignment.
NOTE: If addition adjustment is required repeat
steps above.
Installation Information
Hinge Pin
Cabinet Hinge
Assembly
Figure 2-10. Door Removal
/
Hinge Pin
Figure 2-11. Hinge Pin Removal
—]————]
Figure 2-13. Cabinet Hinge Adjustment
#3758440 - Revision B - November, 2006
Installation Information
Pro-Series (648PRO)
Drawer Adjustments
Vertical Drawer Adjustment:
NOTE: Before attempting drawer adjusiment, remove
drawer assembly. Pull drawer assembly out, then lift at
front and pull forward until drawer is free from unit.
(See Figure 2-14)
1. Loosen drawer slide mounting screws. (See Figure
2-15)
2. Using a 7/16” (11 mm) open end wrench, turn
adjustment screw until proper alignment is obtained.
{See Figure 2-15).
3. After adjustment, tighten all screws, reinstall drawer
assembly, then check door seal for proper gasket
seating.
NOTE: Assure the drawer is fully engaged onto the
tracks. Check alignment of the drawer closer. If the
closer catch does not align with closer pin adjust the
location of drawer closer.
NOTE: Before attempting drawer adjustment, remove
drawer assembly. Pull drawer assembly out, then lift at
front and pull forward until drawer is free from unit.
(See Figure 2-14) |
1. Loosen screws on the front two slide assemblies.
(See Figure 2-16)
2. Move adjust blocks to desired location and tighten
screws. (See Figure 2-16).
3. Release rear adjust block by disengaging snaps.
4. Move the block forward to shift drawer to the right,
and back to move to the left. Each position will
move the drawer .030" (.8 mm) (See Figure 2-16).
NOTE: Both sides should be moved in the same
direction.
5. Snap the block over the pins located on the rear
adjuster. (See Figure 2-16)
6. After adjustment, tighten all screws, reinstall drawer
assembly, then check door sea! for proper gasket
seating.
NOTE: Assure the drawer is fully engaged onto the
tracks. Check alignment of the drawer closer. If the
closer catch does not align with the closer pin adjust
the location of the closer.
#3758440 - Revision B - November, 2006
Figure 2-14. Drawer Assembly Removal
) /
X Loosen Screws
Figure 2-15. Vertical Drawer Adjustment
Loosen Screws
Figure 2-16. Horizontal Drawer Adjustment
sus-zero | Pro-Series (648PRO) Installation Information
Water Filter Bypass
If choosing not to use the water filtration system, the
system can be bypassed by removing the water filter
cartridge. If done, the water supplied to the ice maker
will not be filtered and the electronically controlled water
filter monitor will be deactivated.
Lift the grille to access the water filter cartridge by
pulling out on the bottom edge of the grille, then tilt the
grille frame forward (See Figure 2-17).
Slowly rotate the water filter cartridge 1/4 turn counter-
clockwise to disengage. Gently twist until the cartridge
is free from the base, DO NOT pull (See Figure 2-18).
There will be water in the filter cartridge, so it is normal
for a small amount of water to spill out.
Figure 2-18. Water Filter Removal / Bypass
2-11 #3758440 - Revision B - November, 2006
Installation Information Pro-Series (648PRO)
#3758440 - Revision B - November, 2006 2-12
sus-zero J Pro-Series (648PRO) Electronic Control System
SECTION 3
ELECTRONIC CONTROL
SYSTEM INFORMATION
Electronic Control System Pro-Series (648PRO) Paue-zenod
ELECTRONIC CONTROL TERMINOLOGY & COMPONENT DESCRIPTIONS
The model 648PRO utilizes an electronic control system which monitors, regulates, controls and displays a variety of
functions and operations in the appliance.
The table below defines some of the basic electronic control system terminology.
Term/Component
Control Panel Assembly ...........
Membrane Switch ...................
Keys (Function Keys) ...............
User Display Module ................
Technician's Display Module ......
LCD (Liquid Crystal Display) ......
Indicators ............e—...—...em=e.r.e...
Error Codes ............eseveveriarióee
Temperature Units of Measure....
Set-Point .................—.ereverene
¡High Offset (Cut-in) .................
Low Offset (Cut-out)...............
Thermistor „.........ккккккккккеекое.
Variable Speed Compressor ......
.. As the zone air temperature cycles up and down, the low offset is the minimum zone air
Definition / D ipti
(Also referred to as the Main “Controller” Board), is the printed-circuit board (PC Board)
which contains a microprocessor, relays, trials and electrical connections that monitor
and control all functions of the appliance.
An electrical component on the control board which receives electrical signals from
other components, processes the information, then sends electrical signals to relays and
trials on the board to open or close, switching components in the appliance ON or OFF.
An electrical component on the control board which switches other components in the
appliance ON or OFF when instructed to do so by the microprocessor.
Similar in function to the relay, the triac is a three terminal semiconductor for controlling
current in either direction.
(Also referred to as the Control Keypad interface), is that part of the electronic control
system where all input operations are performed.
Part of the control panel assembly, which consists of the function keys.
The “buttons” on the Membrane Switch used for input operations: “POWER”, “ALARM”,
“ICE MAKER”, “LIGHTS” and 3 sets of "WARMER™ & “COLDER”
Those parts of the electronic control system, one at each bottom corner of the grille
assembly, which display zone temperatures, mode and some error indicators.
That part of the electronic control system, behind the grille assembly, which displays
temperatures, along with mode, error and service text information.
A semi-liquid substance sandwiched between glass in the User and Technician's Display
Modules. The molecules of this semi-liquid substance have no specific orientation.
However, when electricity is applied to them, they react predictably, aligning and
straightening in such a way as to control light passage.
The words, numbers and icons that appear at the User Displays and the Technician's
Display through the use of LCD's.
The code numbers that may appear on the Technician's Display when accessing Error
Code History during Diagnostic Mode. Error Codes are logged if the unit experienced
specific problems related to electrical signals supplied by electrical components. There
are ninety-nine possible Error Codes, but only twenty can be stored at a time.
Temperature observed at the User and Technician Displays may be in Fahrenheit units
of measure (°F) or Celsius units of measure (°C). A series of key strokes altows the
temperature units of measure to be switched to display as either °F or °C.
The desired zone temperature, established by pressing the COLDER or WARMER
keys. |
As the zone air temperature cycles up and down, the high offset is the maximum zone
temperature that the electronic control system will allow before calling for cooling.
temperature that the electronic control system will allow before interrupting cooling.
(Also Referred to as a Temperature Sensor), is a resistor with which resistance changes
as the temperature around it changes. For electronic control system purposes, the
microprocessor measures the resistance, then displays it as a temperature reading.
A compressor that runs at varying speeds depending on the temperature detected in the
corresponding zone(s) of the appliance.
#3758440 - Revision B - November, 2006 3-2
sus-zero J Pro-Series (648PRO)
Electronic Control System
ELECTRONIC CONTROL SYSTEM OVERVIEW
Below is the wiring schematic for the model 648PRO, illustrating the components of the electronic control system.
« Manual input operations are performed at the Control Panel (Keypad).
+ Monitoring, regulating and controling functions take place at the Main Control Board.
* Temperatures, mode activation icons and possibly error indicators are displayed on the left and right User Displays
(Left and Right Display Boards) and the Technician Display (Tech Display).
The entire electronic control system is described in greater detail on the following pages.
NOTE: For more detailed electrical diagrams refer to the wiring diagram and schematic supplied with the unit.
L1 115 YOLTS
BO CYCLES
AWECO REF VALYE 2
160 0
M
WATER VALVE
CONDENSER FAN MOTOR
a FILL-TUBE HEATER
DEF HEATER 1
TROUGH HEATER 1
VSPEED
CONTROL
BOX FZ
REFRIGERATOR
STARTING RELAY
LOW VOLTAGE
Ica dic] ne
Figure 3-1. Wiring Schematic
3-3
(РОВ NON-GLASS
DOOR ONLY)
ET
VBPEED
CONTROL
BOX REF
{FOR GLASS
DOGA ONLY
= ЕМАРОНАТОМ FAN ZONE
E ACVAPORATOR FAN PONE 3
EVAPORATOR PAN ZONE 1
43758440 - Revision B - November, 2006
Electronic Control System
Pro-Series (648PRO) Peve-zanod
CONTROL BOARD LAYOUT AND SUMMARY TABLE
The electrical connection points on the main control board are labeled alphanumerically. These labels correspond
with the alphanumeric control board summary table, located on wiring diagrams. By referencing the summary table,
it is possible to identify which components are connected at which connection points on the main control board.
Below is a layout diagram of the control board and a copy of a summary table (See Figures 3-2 & 3-3).
NOTE: All components on control board are non-replaceable. If problems with control board are identified, the
complete control board must be replaced.
EVAP 12 VDC POWER GROUND RETURN
ZONE 1 SPEED SIGNAL EVAP FAN POWER 12 VDC
ZONE 4 TACHOMETER UNUSED
ZONE 3 TACHOMETER ZONE 4 SPEED SIGNAL
UNUSED —— —— ZONE 3 SPEED SIGNAL
ZONE 1 FAN TACHOMETER — — UNUSED
а С NETWORK
El PT ONCE Pit
a
a Pa
P14 NH LEFT DEFROST HTR
a
nn
о Р19 | RIGHT DEFROST HTR
a
a
P48 [| LEFT COMPRESSOR
P17 [H RIGHT COMPRESSOR
MAIN
ов CONTROL
ZONE 1 EVAP SENS P16 [| MAIN LIGHTS
ZONE 1 CABINET SENSOR —_] BOARD
ZONE 4 EVAP SENSOR —_|
ZONE 3 EVAP SENSOR —|
ZONE 4 CABINET SENSOR — | P15 | LA
ZONE 3 CABINET SENSOR —
RIGHT CONDENSOR —
LEFT CONDENSOR — |
AMBIENT —
Pi GND
1} | P13 LH NEUTRAL
FRONT OF 2 P12 7
UNIT [asp où TA poop]
| | То
| L WATER VALVE INPUT
REFRIGERANT VALVE ZONE 4 DRAWER INPUT
CONDENSER FAN | ZONE 3 DOOR INPUT
ICEMAKER — || Len —— ZONE 1 DRAWER INPUT
ICE ACCESSORIES ZONE 1 DOOR INPUT
WATER FILTER INPUT
ZONE 1 DEFROST BI-METAL INPUT
Figure 3-2.
Control Board Layout
DESCRIPTION FUNCTION a COLOR
: MEN RAL . ..— NEUTRAL INTOBOARD a AMBITE
....P14 |DEFROST HEATER 1 FOWERS DEF HTR 1 BLUE
_ POWERIN adden POWER NTO BOARD ene SLACK
, . PIE —__MôIS LGHTS a a Lee ¿POWERS MAIN LIGHTS ‚он YELLOW
‚ .‚В1Ро COMPRESSOR REF is A PCANERS REF COMPRESSOR GRAY
PIB COMPRESSOR FREEZER _. [POWERS COMPRESSOR FRE FURPLE
Pas UNUSED UNUSED en UNUSED
P12-1__ UNUSED UNUSED 0 aan —— UNUSED
ME - N м UNUSED tn _UNUSED …
|! USEC NE e Lee — EMUSED ___….
PZA... [WATER VALVE INPUT Te SENSES WATER VALVE AGITVATION | TAN _
Mm 125 .._SENSES IF ZONE 4 DRAWERS ARE OPEN | UNUSED
17 _BENSES If ZONE 3 DOOH OPEN UNUSED
157 _ _ UNUSED
Ч ¡UNUSED ———————]] UNUSED
PA E SENSES WHEN HEATER 1 SHUTS OFF mr GRAYMHITE
PEO. _ UNUSED es ——— UNUSED , .
2-11 UNUSED . -ABHUSED oman UNUSED :
+ ¡SENSE WATER FILT i... PE D ;
- RIE СООО POWERE FILL -TUBE AND ACCESSORIES WHITÉBLUE _:
1 CE MAKER . ¡POWERS IGE-MAKRE UNUSED i
AT ED. ‘UNUSED UNUSED |;
P1Z- TUNLEED — UNUSER Ne _ UNUSED __;
17 A eo "COMDENSER FAN ————— WHITE/RED
‚Р12- .. —— SE ROMANE Eu. 0000000 TANFAFAITE
„Ре JUNUSEB UNLSED — EMLISED
2-20 —
LEW VX VOLTAGE CIRCUITS
1 PA Tunu Lomme mm UNUSED ns mm UNUSED —
1 PB UNUSED mm sea Ом ЕО UNUSED
P23 UNUSED —_— UNUSED TTT UNUSED
JRE UNUSED Le ct ee Ne aa NN mm UNUSED
Р2-5 UNUSED TT UNUSED 5
648PRO CONTROL BOARD SUMMARY
Figure 3-3. Control Board Summary Table
#3758440 - Revision B - November, 2006
3-4
Pro-Series (648PRO)
Electronic Control System
CONTROL PANEL AND USER DISPLAYS LAYOUT
FREEZER
USER DISPLAY
(in Grille Assy)
La FILTER
| Control Panel |
REFRIGERATOR
USER DISPLAY
(in Grille Assy)
|
385: 3b:
| ¡CE MAKER | owes | E
FREEZER ZONE UNIT / POWER DOOR AJAR UPPER REFRIGERATOR
SET-POINT ON/OFF KEY ALARM ON/OFF ZONE SET-POINT
ADJUSTMENT KEY ADJUSTMENT
KEYS KEYS
¡CE MAKER ACCENT LOWER REFRIGERATOR
SYSTEM ON/OFF LIGHT ZONE SET-POINT
KEY ON/OFF ADJUSTMENT
* KEYS
Figure 3-4. 648PROG Series Control Panel Layout
NOTE: Figure 3-4 represents the 648PROG (with glass door). The control panel for the 648PROS (with solid door)
does not have the LIGHTS on/off key.
3-5
#3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO) Peue-zenod
BASIC ELECTRONIC CONTROL INPUT OPERATIONS
The following pages describe the basic input operations performed at the contro! pane! (switching unit ON and OFF;
adjusting set-point (temperature adjustment); switching ice maker system ON and OFF; enabling and disabling door
ajar alarm feature; and in models with glass doors only, accent lighting system ON and OFF). Please note that
though possible to display temperatures in Fahrenheit or Celsius, in most cases Fahrenheit readings are shown.
Unit ON/OFF
All units are shipped in the OFF Mode. When power is supplied to the unit the word “OFF” is visible in the right
User Display. By pressing the POWER key (See Figure 3-5), power is allowed past the main control board to the
rest of the unit, indicated by the appliance running through a self test, in which the lights and all the LCD's in the
User Displays energize, then the User Displays show temperatures.
NOTE: If the unit is switched OFF using the POWER key, the word “OFF” will be visible on the right User Display.
WHEN IN “OFF” MODE, AC LINE VOLTAGE IS STILL PRESENT AT THE MAIN CONTROL BOARD AND DC
POWER SUPPLY! AND, LOW DC VOLTAGE IS PRESENT IN THE LOW VOLTAGE ELECTRICAL SYSTEM.
0 FF
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Figure 3-5. Switching Unit ON or OFF - Press POWER Key
Adjusting Set-Point (Temperature Adjustment)
To adjust set-points, press the appropriate WARMER or COLDER key on control panel in multiple key strokes until
desired set-point is achieved (See Figure 3-6). One key stroke equals one degree change.
NOTES:
* To the right of each temperature reading is an icon representing the appliance. The darkened portion of the appli-
ance icon indicates which zone is associated with the temperatures to its left.
* The temperature range in a freezer zone is -5°F (-20°C) to +5°F (-15°C). The temperature range in a refrigerator
zone is +34°F (+1°C) to +45°F (+7°C). |
* The initial stroke of the WARMER or COLDER key will change the previous set-point by one degree.
* The set-point will be displayed on the User Display for ten (10) seconds after the last key stroke, then the zone
temperature will be displayed. As the zone temperature changes, the temperature displayed will change by no
more than one degree per minute.
F Upper refrigerator zone temper- /4 Е Е
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Figure 3-6. Adjusting Set-Point - Press Appropriate WARMER or COLDER Key In Multiple Key Strokes
#3758440 - Revision B - November, 2006 3-6
Pro-Series (643PRO) Electronic Control System
Icemaker System ON/OFF
All units are shipped with the icemaker system is OFF. By pressing the ICE MAKER key on the contro! panel, power
is allowed to the icemaker system and the ice making icon appears in the left User Display (See Figure 3-7). To
switch the ice maker system OFF, press the ICE MAKER key again and the ice making icon disappears.
NOTES:
* When in “Sabbath Mode,” the icemaker system is deactivated. Sabbath Mode will be explained later.
* To allow ice to freeze fully and reduce effects of low walter pressure, power lo the icemaker system is interrupted
for forty-five (45) minutes after each ice harvest. This can be bypassed for service purposes by switching the ice-
maker system OFF, then back ON with the ICE MAKER key.
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Figure 3-7. Switching Icemaker System ON or OFF - Press ICE MAKER Key
Door Ajar Alarm Feature
All units are equipped with a door ajar alarm feature. To enable the door ajar alarm, press the ALARM key on the
control panel (See Figure 3-8). The bell icon appears in both User Displays indicating the alarm is enabled. With
the alarm enabled, the bell icon will flash and an audible alarm will beep whenever a door or drawer is left open for
more then thirty (30) seconds. To disable the door ajar alarm, press the ALARM key again and the bell icon disap-
pears from the displays.
1 E д Alarm feature is activated — 88. JA E
5
Figure 3-8. Switching Door Ajar Alarm ON or OFF - Press the ALARM Key
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Accent Lighting System ON/OFF (Model 648PROG)
Models produced with glass doors possess an accent lighting system, which allows the lights on each side of the
upper refrigerator zone to stay ON when the door is closed. To make this happen, press the LIGHT key (See Figure
3-9). To switch back to normal operation, so that the lights on each side of the upper refrigerator zone switch ON
and OFF with light switch activation, press the LIGHT key again.
cone [wares | ICE MAKER |
RES | ae | | + cover [unen E me
Figure 3-9. 648PROG Accent Lighting System ON or OFF - Press the LIGHT Key
3-7 #3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO)
UNIQUE ELECTRONIC CONTROL INPUT OPERATIONS
The following pages illustrate unique customer input operations performed at the control panel. The input operations
described are: Temperature Unit Selection Mode, Sabbath Mode, Showroom Mode, Manual Zone Disable Mode
and Manual Freezer Evaporator Defrost.
Temperature Units Selection Mode (Selecting Degrees Fahrenheit or Degrees Celsius Display)
The appliance is initially set to display temperatures in Fahrenheit temperature units of measure, indicated by the “F”
on the User Displays above the appliance icons. This can be changed so Celsius units of measure are displayed by
initiating Temperature Units Selection Mode. |
NOTE: Temperature Units Selection Mode must be initiated within the first (1) minute after switching the unit ON.
To convert Fahrenheit (°F) temperature units of measure to Celsius (°C), press and hold the ALARM key and the
POWER key simultaneously for five (5) seconds, then release the keys (See Figure 3-10). À "c“ will appear on the
User Displays above the appliance icons, indicating that temperatures will now be displayed in Celsius units of
measure. Please note that changing from Celsius temperature units of measure to Fahrenheit is the same proce-
dure (See Figure 3-11).
NOTES:
* Temperature Units Selection Mode will end ten (10) seconds after the last key stroke.
* Do not press and hold the POWER key first, that will simply switch the unit OFF.
- JOE Ju Jo
|Press and hold for 5 seconds |
coco | {mnauca( ICE MAKER |
POWER | ALARM | LIGHT |
Figure 3-10. Converting Temperature Units of Measure to °C (within first minute after switching unit ON) -
Press and Hold ALARM Key and POWER Key for five (5) seconds
0 E |Press and hold for 5 seconds |
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T | COLDER WARMER COLDER | warmer]!
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Figure 3-11. Converting Temperature Units of Measure to °F {within first minute after switching unit ON) -
Press and Hold ALARM Key and POWER Key for five (5) seconds
#3758440 - Revision B - November, 2006 3-8
sus-zero d Pro-Series (648PRO) Electronic Control System
Showroom Mode
Showroom Mode was incorporated into the electronic control system so that these appliances could be displayed in
a showroom setting. When in Showroom Mode, all cooling, defrosting, and ice making functions are disabled, but
the lighting system, displays and door ajar alarm are operational... Set-points will appear on the User Displays, and
“Showroom Mode” will appear on the Technician Display.
To initiate Showroom Mode, the unit must first be switched OFF using the POWER key (See Figure 3-12), then
press and hold any pair of WARMER and COLDER keys, then the POWER key, then release all three keys (See
Figure 3-13). To return the unit to normal operation, repeat the steps above.
NOTES:
* Always check set-points after returning unit to normal operation.
* One unique operation that is possible when in Showroom Mode is to force the "REPLACE FILTER" icon to appear.
Do this by pressing and holding the ICE MAKER key for five seconds, but only if the filter is in place. And, to
deactivate the "REPLACE FILTER" icon, the filter must be removed, then replaced.
E
[coo] fun] fono] fun)
)eo.oen | [warmen
LIGHT
és
Figure 3-12. To Enter (or Exit) Showroom Mode, Switch Unit OFF First
i 38 386
E
(==
LIGHT
Figure 3-13. Then Press and Hold Any Pair of WARMER and COLDER Keys, Then the POWER Key
#3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO)
Sabbath Mode
Sabbath Mode was incorporated into the electronic control system for the observance of certain religious days.
Initiating Sabbath Mode disables the lighting systems, ice making system, alarm system and the User Displays, and
“Sabbath Mode” will appear on the Technician Display.
To initiate Sabbath Mode, the unit must first be switched OFF using the POWER key (See Figure 3-14), then press
and hold the POWER key until the User Displays and lights switch OFF, the alarm emits a quick series of beeps,
and “Sabbath Mode” appears on the Technician Display (See Figure 3-15). This will take approximately ten (10)
seconds. To return to normal operation, switch the unit OFF, then back ON.
NOTE: During Sabbath Mode, set-points cannot be changed and manual defrost cannot be initiated.
NOTE: When in Sabbath Mode, the following holds true in accordance with Star-K requirements:
» Freezer defrosting functions wili convert to a fixed time base sequence instead of adaptive defrosting, which
is usage based.
* The zone thermistors will still detect high off-set, which is the determining factor to start the cooling process,
but there will be a random 15 to 25 second delay before cooling begins.
=
e [=== PIE FE
Figure 3-14. To Enter Sabbath Mode, Switch Unit OFF First
| ALARM | LIGHT
E
| mom | | vor | [Joe
SE =! -
“Press and hold for 10 seconds |
Figure 3-15. Then Press and Hold POWER Key for ten (10) seconds
43758440 - Revision B - November, 2006 3-10
Pro-Series (648PRO) Electronic Control System
Manual Zone Disable Mode
Manual Zone Disable Mode aliows a customer or Service Technician to switch one zone, or “compartment” OFF for
interior cleaning, defrosting, or diagnostic purposes, while allowing the other zones to continue cooling.
To initiate Manual Zone Disable Mode, the unit must be ON. With the unit ON, press and hold the WARMER key for
the zone being disabled, then press the POWER key, then release both keys (See Figure 3-16). When a zone is
disabled, “- -” (double dashes) will appear on the User Display in place of zone temperatures, indicating all cooling
functions for that zone are disabled.
There are two ways to exit Manual Zone Disable Mode and return the unit to normal operation. Repeating the
WARMER and POWER key strokes is one way. The other way is to switch the unit OFF, then back ON.
NOTE: Always check set-points after returning unit to normal operation.
F Indicating that all cooling functions a» «и» F
I for that zone are disabled. a Ц
= me] == power | ) мам || оон | = олег] ——
Figure 3-16. To Enter (or Exit) Manual Zone Disable Mode, Press and Hold WARMER Key for Zone Being
Disabled, Then Press POWER Key.
Manual Freezer Evaporator Defrost
Manual Freezer Evaporator Defrost was incorporated into the electronic contro! to assist in servicing and diagnos-
tics.
To initiate manual freezer evaporator defrost, press and hold the ICE MAKER key for five (5) seconds (See Figure
3-17). :
NOTE: Manual Freezer Evaporator Defrost will not operate if unit is in Sabbath Mode.
NOTE: The defrost terminator opens at fifty-five (55°F/13°C) degrees and closes at thirty (30°F/-1°C) degrees, so it
will not allow power to the defrost heater if the evaporator is above thirty degrees.
Dé 386 386
| couver | Jue : Е KER | POWER | :
Press and hold for 5 seconds E
Figure 3-17. Initiate Manual Freezer Evaporator Defrost - Press and Hold ICE MAKER Key for 5 Seconds
LIGHT
|сокова | [lanes] | corona | unen
1
'
=
3-11 #3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO)
FUNCTIONS OF THE ELECTRONIC CONTROL SYSTEM
The following pages explain monitoring, regulating and controlling functions of the electronic control system. Signal
traces on a mode! 648PRO wiring schematic are used to show current flow for functions being explained.
Supply Power to the Lighting System
Power is supplied to the lighting system through the control board when the unit is switched ON by pressing the
POWER key. With a door or drawer open, light switches allows power to the lights (See Figure 3-18).
NOTES:
* Power to the upper refrigerator lights is monitored by the microprocessor to control switching ON and OFF of the
accent lights. This information is ignored if the accent lighting system has been switched to 100% ON.
* Power to all lights is monitored by the microprocessor to control the door ajar alarm feature.
* If in Sabbath Mode, the lighting system is disabled. Sabbath Mode will be covered later
L1 115VOLTS ——
e y 60 CYCLES vo
CHREARHIE WHITE
| SRAYMHITE - т ri т
| Lighting power monitor lines |
1 CLAM GE
| ] 7 | ORANGE RED
oooohn ELECECERTEE Pee]
P12 20 2 a £0) WHITE
e 1 Va Nae”
P13 + pi - CAAWER 2 LIGHT —
DHAWER 7 SWITCH »
MAIN prev foed — WHITE |
CONTROL En me
par BOARD veo [o EEN =
DEGYE E a TT
|
1
1 HC. i
YELLOW CRANGERED CO WHITE
a - Ne ERMNER 1 LZHT
DRAWER 1 SWITCH -
{| Р15 NC
Р5 YELLOW WHITE
! DICC 1 LIGHT
1 Ti
+ P16 NE
24
system unless unit is switched OFF or
is in Sabbath Mode.
[ee 7 Power supplied through P16 to lighting
N
DE POWER
SUPPLY
NN
Figure 3-18. Signal Trace Schematic of Lighting System
43758440 - Revision B - November, 2006 3-12
Pro-Series (648PRO) Electronic Control System
Monitor, Display and Regulate Zone Temperatures
Temperature signals from thermistors in each zone are monitored and displayed on the User Displays. When a
zone temperature reaches high offset (calling for cooling), the compressor and evaporator fan are switched ON, and
if a refrigerator zone, the refrigerant valve is switched to the appropriate side. (See Figure 3-19). When a zone
reaches low offset (cut-out) temperature, the compressor and evaporator fan are switched OFF. Though zone air
temperature fluctuates from off and on cycles, the “average” temperature is displayed.
NOTES:
. Freezer zone temperature range is: -5°F (-21°C) to +5°F (-15°C); Refrigerator zone temperature range is: +34°F
(+1°C) to +45°F (+7°C).
ef average zone temperature changes, the display will change by only one degree per minute.
- if a freezer zone thermistor is faulty, the compressor defaults to 20 minutes on, 20 minutes OFF cycling, the evap-
orator fan will cycle with the compres- _
sor at medium fan speed, EE = - dbevcies | NEUTRAL |
appears in appropriate User Display, y y
SERVICE flashes and the Error Code
is logged. uns 0900000 ANNECO REF VALVE 2 was
* If a freezer evaporator thermistor is
faulty, the freezer compressor and 5. Refrigerator refrigerant
evaporator fan will not energize until | "Ч solenoid valve opens to
zone air temperature exceeds high Г appropriate side
offset by 5°F (3°C). SERVICE flash- es a
es and the Error Code is logged.
- If a refrigerator zone thermistor is 1
faulty, the compressor defaults to 10 I
minutes ON, 10 minutes OFF cycling, AN ©
the evaporator fan will cycle with the ms BOARD
U
compressor and/or the refrigerant
valve at medium fan speed, EE
appears in appropriate area of User hig 7
Display, SERVICE flashes and the wy ll [4. Compressor(s) energized|
Error Code is logged. es MN Y iaa va
- If a refrigerator evaporator thermistor mo | ore Em, None
is faulty, the refrigerator compressor REFRIGERATOR
and evaporator fan will not energize Gr VEPEED Japon /
and/or the refrigerant valve will not FF
switch sides until zone air tempera- D00ROMM |
ture exceeds high offset by 5°F (3°C). ==
SERVICE flashes and the Error Code
is logged. LOW VOLTAGE
If in Sabbath Mode, the zone thermis- ||
tors still control compressor opera- — ——- E
tion, except that when high offset is
reached, there is a random 15 to 25
second delay before a compressors
is energized.
MTL
2. Zone(s) calling for cooling
pu + | (Temp above high offset)
MO
ES Oca Cami Я с
1. Temperatures
displayed on
User Displays
[3. Evaporator fan(s) energized |
Figure 3-19. Signal Trace Regulating Temperatures
3-13 #3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO) Peus-zenod
Assist in Control of Variable Speed Compressors
As mentioned on the previous page, temperature signals from the thermistors in the zones/compartments are moni-
tored by the microprocessor and then displayed on the User displays.
When a zone reaches high-offset (calling for cooling), a start command is sent to the inverter, which is supplied with
AC power at all times. The inverter then provide high DC voltage (3-phase, 50 - 150 Hz), outputs to the compressor.
The inverter in turn senses the compressor load. If the the compressor load is high, the speed command from the
inverter will be for high speed compressor operation; if medium compressor load, speed command from the inverter
will be for medium speed; if low compressor load, speed command from the inverter will be for low speed. If/when a
zone reaches low-offset, a stop command signal is sent to the inverter, which then cuts DC power to the compres-
sor.
NOTE:
* Variable speed compressors, evapo- mx LT USVOLTS NEUTRAL =
rator fans and the condenser fan will Ÿ y
run a great majority of the time. This
is normal. These components will | 000008 AWECO REF VALVE 2 ae
295 0
only cycle off during defrost and may
also cycle off for short periods of time
if the ambient temperature is low | if]
enough. De |
- Initial speed command from an invert- | Men al
er to a compressor are always for
High speed. HI В
« The refrigerator compressor will not Je AC power supplied to variable speed
be variable speed on solid door units. MAIN compressor inverter at all times. When
* The refrigerator service replacement O Boa: cooling 5 called for. S-phase, high DC
compressor is non-variable speed, ne voltage is then supplied to variable
regardless of the unit configuration [ee [|] speed compressor. It compressor load
(glass door or solid door) | [Jr 7 5 ap. medium or low, speed com-
- u ; and will adjust accordingly.
a = О IM
— Г contol ROT o olas |
“о
=
LT BLUE
VSPEED
{| CONTROL [ROW
BOX REF
(FOR GLA
DOOR TINLY]
4
|
| a RE
px NA
| 4 _ IEEE
[J + на 3
[| BT CONTROL BROT on) TE ss rs
or
|
WAL LEA | UH HAN SOME
EVAPORATOR FAR MME |
Figure 3-20. Signal Trace Variable Speed Compressor Control
#3758440 - Revision B - November, 2006 3-14
peoezenod Pro-Series (648PRO) Electronic Control System
Control Refrigerator Dual Refrigerant Solenoid Valve
The electronic control senses refrigerator zone temperatures via thermistors, one in each of two refrigerator zones
(Zones 3 and 4). if either zone reaches high-offset (calling for cooling), then two parallel circuits on the control
board (1 relay per circuit, with 1 common triac) are used to control the dual refrigerant valve. Depending on which
zone is calling for cooling, its corresponding relay supplies power to the triac, a positive (+) polarity, or a negative (-)
polarity pulse signal (500ms / 30 pulses per 1/2 second) is delivered to the dual refrigerant valve, forcing the bead
inside the valves T-connection to one side or the other. If the pulse signal is positive (+), the upper evaporator is
supplied with refrigerant; If the pulse signal is negative (-), the lower evaporator is supplied with refrigerant. (See
Figure 3-21).
NOTES:
+ On initial pull-down, the r efriger ant cu. Lt 145 VOLTS NEUTRAL mm
x : a 60 CYCLES
valve will receive a (+) pulse signal, y |
then switch back and forth between
(+) and (-) on thirty (30) minute inter-
vals until a zone achieves set-point. lon EE AE
- If neither compartment is calling for 3. Refrigerator refrigerant valve
cooling, the compressor and evapora- | == i receives (+), or (-) pulse signal to
tor fans are switched off. 1 o E force bead in valve T-connector to
Refrigerator evaporator fans cycle Ur pz one side or the other, depending on
with the refrigerant valve. HU + pulse polarity, to supply refrigerant
A. | to appropriate evaporator.
2 MAIN 4
2. Refrigerator compressor
energized
REFRIGERATOR
COMPRESEDA LT BLUE
TARTING RELAY VSPEED
an $ CONTROL {BROWN
| 20% REF gm)
[FOR GEASS
DOOR ONLY)
MATE
DC POWER
LOW VOLTAGE suba
Cc] , 1. Refrigerator compartment
= n UE high-offset temperature
pa observed via thermistors
TMERMISTLA
RLF Lo ABET
BMRA,
MAIN
CONTROL
z EVAPORAI COR FAM ZONE +
Figure 3-21. Signal Trace Refrigerant Valve Activation
3-15 #3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO) Peun-zenod
Control Condenser Fan Operation
The microprocessor observes the condenser outlet temperatures of both systems. If either compressor is running
and a condenser outlet temperature is>= 90°F (32°C), a signal is sent to the condenser fan relay on the control
board to close, supplying power to the condenser fan (See Figure 3-22). If both compressors are off, the condenser
fan will be off.
NOTES:
* If both condenser outlet temperatures 4 isvors ware
are < 90°F (32°C), no power is sup- = y р
plied to the condenser fan motor,
regardless of compressor operational
state.
« Currently, the condenser fan operates
at 1350 RPM, whenever it is ener-
gized. In the near future, the con- genen =, iE moe (VM) CONOENSERFARMOTOR sn
denser fan will operate at a variable ]
speed as follows: +»
1. Compressor running and con-
denser outlet temperature >= mai ||
U
|
d
|
=[ | 13. Condenser fan energized |
90°F (32°C), condenser fan
speed will be Low = 1100 RPM.
2. Compressor running and con-
denser outlet temperature >=
85°F (35°C), condenser fan
speed will be High = 1350 A
RPM. DÉ CO]
* If a condenser outlet thermistor is
defective, the condenser fan will run
at high speed whenever a compres- REFRIGERATOR
sor is energized. =)
MAIN
CONTROL
BOARD
[1. Compressor(s) energized |
nF
TOFZ
=> mw
ror | ple (FOR NON-GLASS
ELA DOOR ONLY)
LT BLUE
VSPÉED
STARTING BELAY
CONTROL (BROWN
|
|! BOX REF =
(FOR GLASS
DOOR ONLY)
WHITE
WL
DC POWER
LOW VOLTAGE e
J AS 2. Condenser outlet temper-
Fz 0 atures >= 90°F (32°C)
TOGO Са Са © СЭ
Figure 3-22. Signal Trace Schematic of Condenser Fan Operation
#3758440 - Revision B - November, 2006 3-16
sus-zero | Pro-Series (648PRO) Electronic Control System
Minimize Condensation on Refrigerator Door Glass
On units produced with glass doors, the microprocessor detects when the refrigerator door is opened, via the light
switch, so when the door closes, the evaporator fan is energized for five (5) minutes, regardiess of compressor oper-
ational status. This draws any warmer moist air away from the door glass. (See Figure 3-23). To further assist in
minimizing condensation on the glass, the door is equipped with a braided wire heater around the glass perimeter.
NOTES:
» Refrigerator evaporator fans also cycle with the refrigerant valve.
+ This door heater on glass door models is powered off of the condenser fan circuit relay.
L1 115 VOLTS ET
RE |” CYCLES pu
| лк 0000000 AWECC REF VALVE 2 E
2950
Ta PEZ ..
1 wines {x ay CONDENSER FAN MOTOR maz
1 gt (M
[Je m Ш
1 P13 5
HH] Pis Ps mon E № page FAX wir
| Ги A herr
MAIN 4 i
N camp 1. If Ref door is opened then
| SOARD closed, microprocessor
[]re senses light switch opera-
Dre i tion.
[ju ?
и i 1
"= =D
DC POWER
LOW VOLTAGE SUPPLY
===,
[|
[= 2. Evaporator fan
[es switched on for 5
MAN minutes even if
L , у
[]re BOARD compressor is
"EZ , Door heater not energized.
[re >| on with con- = :
[Jr > | |denser fan ue т
1 — = 1 = CT. ABE DOOR TR 2
a i 5 i! AA
[ WHITE
|
Figure 3-23. Signal Trace Schematic of Refrigerator Evaporator Fan Operation & Door Heater
3-17 #3758440 - Revision B - November, 2006
Electronic Control System -Pro-Series (648PRO) Meue-zenod
Monitor and Control Refrigerator Fan-Assisted, Off-Cycle Defrost
Temperature signals from refrigerator evaporator's thermistor's are observed by the microprocessor. During off cycle
defrost, if a refrigerator zone temperature reaches high offset {calling for cooling) before evaporator temperature
rises to 38°F (3°C), no power will be supplied the the compressor, and/or no (+) or (-) pulse signal will be supplied to
the refrigerant valve. But, the the zone evaporator fan will switch ON at low speed. Once the evaporator tempera-
ture reaches 38°F (3°C), normal cooling functions begin. (See Figure 3-24).
NOTES: Lan L1 115 VOLTS NEUTRAL ==
* If a refrigerator zone thermistor is у” CYCLES y
faulty, the refrigerator compressor
defaults to 10 minutes ON, 10 min-
utes OFF cycling, the evaporator fan
will cycle with the compressor at
medium fan speed, EE appears in
appropriate area of User Display,
SERVICE flashes and the Error Code
is logged. +
|
Hee
* If a refrigerator evaporator thermistor
is faulty, the refrigerator compressor le E
will not energize and/or the refriger- [=e an ,
ant valve will not switch sides until [or CONTRO
zone air temperature exceeds high es
offset by 5°F (3°C). SERVICE flash- Г |
es and the Error Code is logged. | |
= ES lil 3. Compressor will not
= - switch on
EIT me]
ких
DOOR OM] U
LOW VOLTAGE
== 1. Refrigerator compartment
es thermistor(s) at high offset
J синт ||| E
0 - MAIN = EE
CONTROL A ях
Ц” BOARD à à
[] re | |2. Refrigerator evaporator ;
fes [| thermistor(s) below 38°F 1
y (3°C) DO
n— “IF À. Evaporator
Dl fan(s) will
not switch
on
Figure 3-24. Signal Trace Schematic of Refrigerator Off-Cycle Defrost
43758440 - Revision B - November, 2006 3-18
Pro-Series (648PRO) Electronic Control System
Monitor and Control “Adaptive Defrost” of Freezer Evaporator
Initially, the freezer compressor cycle-runs 12 hours. The control board defrost relay is then closed, supplying power
to the defrost and drain trough heaters. The compressor and evaporator fan are switched OFF.
With “Adaptive Defrost”, the length of time the defrost heater stays on to open the defrost terminator bimetai
(55°F/13°C), is observed by the microprocessor via the grey w/white stripe wire to P12-9. This length of time is
used to calculate the number of hours before the next defrost (defrost interval). If the heater then stays on for a
shorter time period, the microprocessor increases the next defrost interval. If the heater stays on for a longer time
period, the microprocessor decreases the defrost interval. (See Figure 3-25) This is an ongoing process whereby
the defrost time and the defrost interval will vary by unit use.
NOTES:
* A five (5) minute time delay/dwell fol- Li MSVOLTS — NEUTRA =
lows all defrosts, during which the y Mi y
draín trough and fill tube heaters
remain energized. Af the end of the
dwell, the compressor and evaporator _
fan are energized, and the drain го
trough heater switches OFF. ef т -«—— Length of defrost
* If the freezer is at high offset (calling time monitored by
for cooling) after the five (5) minute MICroprocessor via
time delay/dwell, the compressor will TT grey/white defrost
switch ON, but the evaporator fan will | | sense fine.
=
Noa —&
En
=
db
DOT
sir 2
с
remain OFF until the evaporator has
fallen below 20°F (-7°C).
|
!
— Ca
a
т
a
E
MAIN
» Minimum defrost interval = 6 hours of Jer O ,
compressor run time; Maximum [re «|
defrost interval = 80 hours of com- e [|| Ue MERTER
pressor run time; Maximum defrost ne ; ear
duration = 30 minutes, plus 5 minute == ео р АИ wae
dwell , a == Ц E OA -
* If the defrost sensing line is open,
defrost operation defaults to 30
minute defrost time / 6 hour build
time, and an Error Code is logged. If
the evaporator thermistor detects an
under-heat or overheat situation at
the same time, another Error Codes
AUTE
is logged. OC POWER
+ During defrost, the displayed temper- LOW VOLTAGE
ature is locked. E
IIA ac WI U
a a
ol)
Figure 3-25. Signal Trace Schematic of Freezer Adaptive Defrost
3-19 43758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO)
Monitor Compressor Run Duration, Displays If Service is Needed
The microprocessor observes the changing state of the compressor relays to determine the length of compressor
run time (See Figure 3-26). if a compressor runs 100% (Fre = 6 hours / Ref = 4 hours), an error code is logged, and
defrost is initiated, but SERVICE will not flash.
If several 100% run periods occur, and
the compartment temperature does not ase — encvcies | NEUTRAL
fall to at least the set point / low off-set y |
temperature average (and the door is
not opened during the last run period),
then SERVICE alone will flash (See
Figure 3-27).
NOTE: To clear a flashing SERVICE, pi
the problem must be corrected, the 1 „[[]
Error Code must be cleared from mem- Has ;
ory while in Service Mode, and the unit |
must be switched OFF, then back ON. pe ”
Ue MAIN 4
Hew CONTROL
1 Pig 4
07 "|| Length of compressor run time is
es 5 monitored by microprocessor.
wT =
conn — Eaton |
REFRIGERATOR
COMPRESSOR LT. BLUE
STARTING RELAY VSPEED | mW
| BOX REF SADO,
[FOR GLASS
DOOR ONLY)
‘WHITE
DC POWER
LOW VOLTAGE SUPPLY
Figure 3-26. Signal Trace Schematic of Compressor Electrical System
A F Hi em JH F
Figure 3-27. SERVICE Flashing = Several Excessive Compressor Run Periods
#3758440 - Revision B - November, 2006 3-20
Pro-Series (648PRO)
Electronic Control System
Monitor Icemaker System and Display if Service is Needed
The microprocessor observes the voltage supplied to the icemaker water valve solenoid. If the solenoid is energized
for more than fifteen (15) seconds, power to the icemaker system is disabled for 12 hours (See Figure 3-28), and an
error code is logged. If this happens five consecutive times, ice making icons in both User Displays and the SER-
VICE icon in the right User Display will flash, indicating the ice making system is now disabled (See Figure 3-29).
NOTES:
* To clear this error indicator from the
User Displays and reactivate the ice
making system, the problem must be
corrected, the Error Code must be
cleared from memory while in Service
Mode, and the unit must be switched
OFF, then back ON.
+ To allow ice to freeze fully and reduce
effects of low water pressure, power
to the ice making system is interrupt-
ed for forty-five (45) minutes after
each ice harvest. This can be
bypassed for service diagnostic pur-
poses by swifching the icemaker sys-
tem OFF, then back ON using the
ICE MAKER key.
* When in Sabbath Mode, the ice mak-
ing system is disabled. Sabbath
Mode will be covered later.
ELA
WHITE.
L1 115YOLTS
y 50 CYCLES |
NEUTRAL
MAIN
CONTROL
BOARD
tt 1
a
WATER VALVE
ta TE: L
WHITE
Power to water valve solenoid is
monitored by microprocessor.
If energized longer than 15 seconds,
power to ice making system is cut
for 12 hours. If this occurs 5 con-
||] sables times, ice making system is
|
disabled.
Figure 3-28. Signal Trace Schematic of lIcemaker Electrical System
F
Ba |
fs
i! i UN
=
Figure 3-29. ICE & SERVICE Flashing = Solenoid Energized 15 sec., every 12 hrs., 5 Consecutive Times
3-21
#3758440 - Revision B - November, 2006
Electronic Control System
Pro-Series (648PRO) Paum-zenod
Monitor Water Filter Time in Use and Display When it's Time to Replace it
The microprocessor observes the switch behind the water filter. When the filter is installed, the switch behind the fil-
ter is depressed/ciosed, telling the microprocessor to start the filter timer countdown (see Figure 30). After approxi-
mately one (1) year of use, the REPLACE FILTER icon on the left User Display will appear (See Figure 3-31).
Removing the filter will will open the switch and replacing the filter with a new one will re-close the switch. When
this is done, the REPLACE FILTER
icon wilt disappear and the countdown
will start over.
NOTES:
If removing the filter for service pur-
poses, it is possible to avoid restart-
ing the filter timer by depressing the
filter switch five (5) times within five
(5) seconds before replacing the filter.
If this is done, the timer will resume
counting from when the filter was
removed.
* One unique operation that is possible
when in Showroom Mode is to force
fhe "REPLACE FILTER" icon to
appear. Do this by pressing and
holding the ICE MAKER key for five
seconds, but only if the filter is in
place. And, lo deactivate the
"REPLACE FILTER" icon, the filter
must be removed, then replaced.
WHITE
bd LAN
rss Filter switch monitored by microprocessor. When
L1 115 VOLTS
9 eo cycles | NEUTRAL
switch is closed, 1 year countdown begins.
1
Ё Pt
IL P13
+ Р15
Г) Pig
CONTROL
{] Pr BOARD
| Pa
[| Ma
Fil
EJ
Figure 3-30. Signal Trace Schematic of Icemaker Electrical System
F REPLACE
Г FILTER
385 36°
Figure 3-31. REPLACE FILTER icon Appears after approximately one (1) Year of Filter Use
#3758440 - Revision B - November, 2006
3-22
Deus-z=nod Pro-Series (648PRO) Electronic Control System
Self Diagnostics of the Electronic Control System
The electronic control system automatically runs through self diagnostics at predetermined time intervals and in the
event of an excessive run condition. During this self test, the control cycies the loads and checks the inputs for fail-
ures. The following components are energized for a few seconds during the self diagnostic program:
* Thermistors
» Glass Door Heater Li $15VOLTS
» Evaporator Fans
+ R8485 Transceiver
+ Aweco (Refrigerant) Valve
60 CYCLES
ANECO REF VALVE 2
* Condenser Fan WATER VALVE
* Accent Lights oe
« Power Relays and trials
« Digital AC Inputs
If there is a problem with the electronic
control system or an electrical compo-
nent, the appropriate Error Code will be
logged. If the problem causes the
inability of the appliance to maintain
temperature, SERVICE will flash on the
right User Display (See Figure 3-33).
N OTES . FiLL-TUBE HEATER
* It is possible to force the appliance to AE
run self diagnostics when in Service TROUGH HEATER 1
mode. Service Mode is explained == Г увРЕЕО
later in this section. EE
* A Service Technician should always
initiate Service Mode and view Error STARTING RELAY
Code History when the SERVICE e
icon is flashing. Service Mode is
explained later in this section.
ONLY]
LOW VOLTAGE
EMAPORATOR ARE TONE 1
CC CoC cae dE —.
r ENMARCHATOR FAR CRE A
=
Figure 3-32. Signal Trace Schematic E-Control System Components
F НИЙ у F
| SERVICE &
Г Рен 1
Figure 3-33. “SERVICE” Flashing = Multiple Possibilities; See Error Code History
3-23 #3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO)
POSSIBLE ERROR INDICATORS
This page contain diagrams illustrating what a customer may see on the User Displays, alerting them that there is a
problem with the appliance. |
NOTE: A Service Technician should always initiate Service Mode and view Error Code History when error indicators
are observed.
NOTE: For thermistor errors described below, thermistors can be tested by submersing them in a glass of ice water
for two (2) to five (5) minutes, and checked for 30,000 to 33,000 ohms.
EE: 38190
Figure 3-34. “EE” in Left User Display, SERVICE Flashing in Right = Freezer Zone Thermistor Fault
F awhile,
SERVICE Z
I (rire
Figure 3-35. “EE” at Left of Right User Display 8 “SERVICE” Flashing = Upper Ref. Zone Thermistor Fault
F utili, F
= = SERVICE
Г LE
Do DD a
Fig. 3-36. “EE” at Right of Right User Display & “SERVICE” Flashing = Lower Ref. Zone Thermistor Fault
a NT
Frias ma fol? - т
w || pk
Fig. 3-37. Ice Making Icon & “SERVICE” Flashing = Water Valve Powered 15 Sec.; Icemaker System Disabled
F
F
E
Figure 3-39. “ - - ” Double Dashes Displayed = Zone Manualiy Disabled
#3758440 - Revision B - November, 2006 3-24
Deve-zenod Pro-Series (648PRO) Electronic Control System
SERVICE MODE (Troubleshooting Input Operations)
The service features in this electronic control system allow the technician to perform a series of key strokes at the
control panel in order to verify, configure, query and troubleshoot the appliance and its electronic control system.
These service features are activated while in the four sub-modes of the Service Mode.
The four sub-modes of the Service Mode are:
1) Diagnostics Mode
2) Operational Status Mode
3) Model Information Mode
4) Version information Mode.
The technicians display, located behind the top grille assembly, utilizes a two (2) line X sixteen (16) character LCD.
While in Service Mode, this display will indicate which sub-mode is active, the data being searched for, and what
other data can be accessed. When not in the Service mode, the Technician's display will indicate system informa-
tion as defined for each particular operational mode.
Basic instructions for working
through the Service Mode menu
can be found on the Technician’s For Service Mode, Press and hold then press
Display cover (See Figure 3-40).
These basic instructions (the Key
= a - Pro48 Zones
Symbol and Arrows), correspond SERVICE MODE (-DIAGNOSTICS
" 1} GIRGNLGSTICS -> ii SELF TEST >
with keys on the control panel, | =} crReNA HISTORY >
thus directing the technician as to | Fc mone =} THERMISTORS >
what keys need be pressed in =1 09 STeErIS > 4 ACTIVE CONE > 1 3
order to move in the direction | Sj STATISTICS >
indicated by the arrow closest to EEPUICE MODE
each key symbol. 2) MaopeL INFO ->| For complete Service
NOTES: | Mode menu see back 1 4
» A complete Service Mode SERMICE FUORE of wiring diagram. e
Menu can be found on the back | E==e1 1 >
of the wiring diagram and on
the next page of this manual. ARMER 4
» Since it is possible to initiate,
bypass, an/or step back
through the four different sub-
modes while in Service Mode,
initiating Service Mode will <a
always be the first step when
explaining how to work through
the Service Mode menu for the
sub-modes.
О
Y
CAUTION 4
The grille is connected with a AE
low-voltage display cable behind AIR
this cover. It MUST be disconnected >
before grille is removed.
3758484 B
Figure 3-40. Technician’s Display with Service Mode Menu
3-25 #3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO)
i Serv ice Mode <Diagnostics «Self Test <Self Test
Service Mode Menu 1)Diagnostics > 1)Self Test > Start? > Active |
a A +
<Self Test <Self Test Data
Results > Board OK
Y
<Diagnostics
2)ErrorHistory >
A
ror 2;
12345 d 10:29:01
+
Error 3: 34 300
12345d 8:15:45
+
| Error 4: None |
. Y
+ Continue for 20 errors
<ErrorHistory <ClearHistory
. 2)ClearH istory > No? >
To initiate the Service <ClearHistory
Mode, press and hold Ÿ ; - Fr | Yes > |
COLDER then POWER = <Diagnostics | | Ambient (degF) |
rues 3)Thermistors > 70
я 4 +
Condensers (F)
Lt 143 Rt 141
+
Zone #1 (deg F)
Evp 51 Cab 18
+
m : Zone #2 (deg F) |
re РТТ NotPrasent
To exit, press ICE _—
MAKER repeatedly | Zone #3 (deg F) |
until you are out. Evp 51 == 18
dh Zone #4 (deg F)
Evp 51 Cab 18
F
<Diagnostics <Manual Zone Manual Zone: Z1
4)Activ ate Zone> Zone #1, start? Evp51 Cab 18
A +
<Manual Zone Manual Zone: 72
Zone #2, start? Evp 51 Cab 18
+
<Manual Zone Manual Zone: Z3 |
Zone #3, start? Evp51 Cab 18
<Manual Zone Manual Zona; Z4
Zone HA, start? Evp 51 Cab 18
Y
<Diagnostics L
5)Statistics > |
r
Service Mode <OpStatus Z1:+Cooling
Z\Op Status > 1)Zone Status > -Def
2 4 +
| Z2: Not Present |
+
Z3:+Cooling
-Def
Za: -Cogling
+Def
<OpStatus Ice Maker Status
2Nce Maker > Harv est
Y
Sarv ice Mode <Model:PRO48 <Select Model Accept New Model
3)Model Info > Change Modal? > PRO48 > No? >
A
I ccepl New a
Yas? >
ervice © ersion nfo +
4 Version info> Contral:01.3.3 <Select Model Accept New Modal
PRO48G > No? >
«Version info +
Hy Micra:02.2.0 Accept New Modal |
<Version info Continuefor number Yes? >
EEConf:01.1.1 | of models defined
+
«Version inf o
LtLCD:01.2.0
«Version info
RtLCD:01.2.0
Logger: 02.2.4
<Versioninfo |
Key pad: unknown
«Version info
S/N:M0000000
#3758440 - Revision B - November, 2006 3-26
peue-zenod Pro-Series (648PRO)
Electronic Control System
Non-Service Mode Display Information
Prior to initiating Service Mode, the foliowing information will appear on the Technician's Display, depending on oper-
ational mode.
1) Model Name
2) Zone #1 Status
3) Zone #2 Status
4) Zone #3 Status
5) Zone #4 Status
Operational Mode LCD Line 41 LCD Line #2
Power Up Scrolling Messages (every 2s) Scrolling Messages (every 2s)
1) Model ID # 1) Unit ID #
2) Main Software Version # 2) E2 Version #
3) Left Display Version # 3) Right Display Version #
4) Keyboard Version # 4) Tech Display Version #
Off
Showroom Sub Zero Showroom mode
Sabbath Sub Zero Sabbath mode
Normal Scrolling Messages (every 25) Scrolling Messages (every 2s)
1) S/N: XXXXX
2) Status
3) Status
4) Status
5) Status
Initiating Service Mode
To initiate Service Mode, press and hold any COLDER key, then press the POWER key, then release both keys
(See Figure 3-41). “Service Mode, 1) Diagnostics” is the first sub-mode to appear in the Technician's Display, with a
small arrow in the bottom right corner pointing right.
NOTES:
- By following the basic directions on the Technicians Display cover and the prompts that appear in the Technician's
Display, a Service Technician will be able to work through the Service Mode menu, to the desired verification point,
configuration portion, and troubleshooting section of the menu.
* For sake of space, the directions that follow will
not explain or show what is seen in the display
after each key stroke. Only the final, and/or
desired result will be explained and illustrated.
+ There are three (3) ways to exit Service Mode: ICE MAKER
1. To exit the Service Mode at any time, press
the ICE MAKER key repeatedly until com- <a
pletely out of Service Mode menu.
2, Pressing the POWER key wili switch the
unit OFF and exit Service Mode.
3. If no keys are pressed for five (5) minutes
after initiating Service Mode, the electronic
control will automatically exit the mode.
[WARNER] 4»
Seruice More
1} Discrustics
| COLDER | | waRMER
ICE MAKER |
ALARM
пож
A
©
rm
o
m
A
| | WARMER] COLDER
|
:h veses
Figure 3-41. Key Strokes and Tech Display - Initiate Service Mode
3-27
43758440 - Revision B - November, 2006
Electronic Control System Pro-Series (64aPR0) Fsus-zerod
Service Mode, 1) Diagnostics (Sub) Mode
There are five levels under Diagnostics Mode, they are:
1) Self Test
2} Error Code History
3) Thermistor Read
4) Activate Zone
5) Statistics
The next few pages explain the steps for working through the five levels of Diagnostics Mode. For sake of space,
the directions that follow will not explain or show what is seen in the display after each key stroke. Only the final,
and/or desired result will be explained and illustrated.
ics 1 Ta - As mentioned, when Service mode is initiated “Service Mode, 1) Diagnostics” appears
in the Technician's Display, with a small arrow in the bottom right corner pointing right. That is the prompt to enter
Diagnostics Mode. Follow the steps below to work through Diagnostics Mode 1) Self Test:
1. After initiating Service Mode, press ALARM key three (3) consecutive times; "Self Test, Active" appears on display
(See Figure 3-42).
During Self Test, which lasts approximately ninety (30) seconds, the main controller board cycles through all
relays and trials, switching components ON and OFF, and checking for correct feedback information from various
electrical components. For example: each
evaporator fan will be energized for a few sec- 4
onds, regardless of the door being opened or
closed. Then, if a relay or triac fails to function
properly, or incorrect feedback is received, a ICE MAKER >
message will appear on the Technician's
Display, headed by the words ":Self Test Data", <a
with words indicating where the problem exists.
2. To see if multiple problems were detected,
press the COLDER key to toggle down through
the Self Test Data.
If there are no problems, the display will read
"Self Test Data, Board OK"
y
| | fem fone] fen] fed
| Press ALARM key 3 times |
Figure 3-42. Key Strokes and Tech Display - Self Test
#3758440 - Revision B - November, 2006 3-28
Deus-z=nod Pro-Series (648PRO)
Electronic Control System
Diagnostics 2) Error History - As mentioned, when Service mode, is initiated “Service Mode, 1) Diagnostics”
appears in the Technician's Display, with a small arrow in the bottom right corner pointing right. That is the prompt
to enter Diagnostics Mode. Follow the steps below to work through Diagnostics Mode 2) Error History:
1. After initiating Service Mode, press ALARM key once.
2. Press the COLDER key once.
3. Press the ALARM key two (2) times. Now, if
error codes are present, the most recent will be
displayed (See Figure 3-43). Below the Error
Code will be the number of days, hours and
minutes since the error was logged.
NOTE: Though there are ninety-nine possible
Error Codes, twenty is the most that can be
stored. If over twenty occur, the newest error
code over-writes the oldest.
4. To see if multiple error codes are logged, press
the COLDER key to toggle down through the
Error History.
NOTE: See following page for Error Code Table.
See directions below to clearing Error Codes.
[WARNER] 4 >
(cower) <b
jean] fu] Pen р
Figure 3-43. Key Strokes and Tech Display - Error History
Before attempting to clear Error History, the cause must first be corrected. If this is not done, the Error Codes will
be re-logged. After repairs, follow the steps below to clear Error History:
1. After initiating Service Mode, press ALARM key
once.
. Press the COLDER key once.
Press ALARM key once.
Press the COLDER key once.
Press ALARM key once.
Press the COLDER key once, and “Clear Error
History, Yes? ->" appears (See Figure 3-44).
Press ALARM key now and all Error Codes will
be cleared from memory.
о том
~
[WARMER] 4»
armer | {CE MAKER |
[over] Farmer] | cour | [ner],
Figure 3-44. Key Strokes and Tech Display - Clearing Error History
#3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO) Paue-zenod
Error Code Table
CODE | ZONE | SERVICE INSTRUCTION
01 X Zone “X” Cabinet Thermistor Failure (Device or Wiring)
02 X Zone “X” Evaporator Thermistor Failure (Device or Wiring)
03 X Zone “X” Condenser Thermistor Failure (Device or Wiring)
04 0 Ambient Thermistor Failure (Device or Wiring)
20 X Check Zone “X” Defrost Bi-metal for Proper Operation
21 X Check Zone "X” Defrost Bi-metal for Proper Operation
22 X Check Zone “X” Defrost Wiring
23 X Check Zone “X” Defrost Wiring
24 X Check Zone “X™ Defrost Heater Ohms
30 0 Check for Stuck Icemaker or Water Valve Failure
35 X Check Zone “X” Fan, Fan Speed Error
40 X Zone “X” Excessive Run
41 X Check Zone “X” Compressor and Wiring
42 0 Check Condenser Fan and/or Wiring
43 X Check Left Refrigerant Valve and Wiring
44 X Check Zone “X” Glass Door Heater and Wiring
45 X | Errors Detectable with Red Door Switches-Disabled Now. Check Overhead Lighting
46 0 Check Ice Accessory Wiring for Open Circuit
47 3 Check Accent Lighting Wiring for Short Circuit
80 X Check Power to Compressor Controller for Zone “X”, Troubleshoot with Manual Activation Mode
83 X Replace Zone “X” VS Compressor and Filter-Drier
84 X Check Zone “X” VS Compressor Wiring
85 X Zone “X” VS Compressor Control Overheat
86 X Check Communication Wiring, Replace Zone “X” VS Controller
87 X Check for Broken Wiring or Open Defrost Heater
89 X Check icemaker Solenoid Valve and Wiring
90 X Change Main Control Board
92 0 Check Keypad Wiring
93 0 Replace Keypad
94 1 Check Wiring / Replace User Display #1
94 3 Check Wiring / Replace User Display #2
96 0 Datalogger Malfunction
97 0 Check Communications Cables / Connectors
98 0 Brownout Check Input Power Supply
Explanation of zone error codes 648PROJB4BPROG ZONES
If “X” = 0, Failure was with a common component.
MX" = 1, Failure occurred in Zone 1 or left system. ZONE ZONE
If “X” = 2, Failure occurred in Zone 2. 1 3
FX = 3, Failure occurred in Zone 3 or right system.
If “X" = 4, Failure occurred in Zone 4.
Note: Zone 2 and zone 4 may or may not be present depending on model. ZONE ZONE
#3758440 - Revision B - November, 2006 3-30
Pro-Series (648PRO)
Electronic Control System
Diagnostics 3) Thermistors - As mentioned, when Service mode, is initiated “Service Mode, 1) Diagnostics”
appears in the Technician's Display, with a smali arrow in the bottom right corner pointing right. That is the prompt
to enter Diagnostics Mode. Follow the steps below to work through Diagnostics Mode 3) Thermistor Read:
1. After initiating Service Mode, press ALARM.
2. Press COLDER two (2) times.
3 Press ALARM now, and the ambient thermistor
is the first to be read (See Figure 3-45).
4. Press the COLDER key to toggle down through
the other thermistor readings.
These readings are real time temperatures, with
no temperature averaging as seen on the User
Displays.
Note: Zones 2 and 4 may or may not be present
depending on model. If not present, "Zone #X
(°F), Not Present” will appear in display.
(WARVER] 4
a] fun) Pr] fo o
[unmuenl| co.en | )warmen||
Figure 3-45. Key Strokes and Tech Display - Thermistor Read
Diagnostics 4) Activate Zone - As mentioned, when Service mode, is initiated “Service Mode, 1) Diagnostics”
appears in the Technician's Display, with a small arrow in the bottom right corner pointing right. That is the prompt
to enter Diagnostics Mode. Follow the steps below to work through Diagnostics Mode 4) Activate Zone;
1. After initiating Service Mode, press ALARM.
Press COLDER three (3) times.
2.
3 Press ALARM now, and “Manual Zone, Zone #1, Start ? ->” appears on the display (See Figure 3-46).
4.
If Zone #1 is the desired zone to activate,
press ALARM. If Zone #1 is NOT the desired
zone to activate, press COLDER until desired
zone appears, then press ALARM.
When a zone is activated, the compressor will run
at high speed and the compartment's evaporator
fan will energize for five minutes. During this five
minute run, the activated zone's evaporator and
cabinet real time temperatures will be displayed
on the Technician's Display.
Note: Zones 2 and 4 may or may not be present
depending on model. If not present, “Manual
Zone, Not Present” will appear in display.
=
(Warver] 4»
| ALARM
[cower] <b
mm а =
fcoen| fmmmmen]) formen | Y rom Y
| LIGHT
| couver | — | couoe | a
Figure 3-46. Key Strokes and Tech Display - Thermistor Read
3-31
#3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO)
Diagnostics 5) Statistics - As mentioned, when Service mode, is initiated “Service Mode, 1) Diagnostics” appears
in the Technician's Display, with a small arrow in the bottom right corner pointing right. That is the prompt to enter
Diagnostics Mode. Follow the steps below to work through Diagnostics Mode 5) Statistics:
1. After initiating Service Mode, press ALARM.
2. Press COLDER four {4} times.
3 Press ALARM now (See Figure 3-47), and it is possible to work through the following ten {10} levels:
1)
2)
3)
4)
9)
6)
7)
8)
9)
10)
“Running Time ->” = Total days, hours and minutes unit has been operating.
“Power Cycles ->" = Total number of power cycles unit has performed.
“% Run Btwn Def ->” = % of freezer compressor run time between freezer defrosts(four possibie zones).
“% Run 50 Cycles ->" = % of each of four possible zone's run time, based on 50 cycles (% and duration).
“Comp Cycles ->” = Total number of compressor cycles for left and right compressor.
“Defrost ->” = Last defrost interval in hours and minutes; Last defrost duration in minutes.
“Average Temps ->" = Average temperature of: Ambient, left/right condenser, 4 cabinet & evaporators.
“Door Open Tim ->” = Greatest non-cumulative duration of light switch open readings (four possible zones).
“Ice Maker ->" = Number of ice harvests in 14 days; Number of minutes ON in 14 days.
“Self Test ->" = Amount of time since last self test was implemented,
[WARNER] 4
<a SUNG Fe | ALARM
[comer] 6
fo" fr [ewe {
—
um | [oon] [ee] ecc] frena)
m
#3758440 - Revision B - November, 2006
Figure 3-47. Key Strokes and Tech Display - Statistics
3-32
Pro-Series (648PRO) Electronic Control System
Service Mode, 2) Operationai Status (Sub) Mode
There are two levels under Op (Operational) Status Mode, they are:
1) Zone Status - Accessing Operational Status, Zone Status will show a zone's cooling and defrost status.
2) Ice Maker - Accessing Operational Status, Ice Maker shows ice maker status as Harvest or Production.
The next few pages explain the steps for working through the two levels of Op Status Mode. For sake of space, the
directions that follow will not explain or show what is seen in the display after each key stroke. Only the final, and/or
desired result will be explained and illustrated.
Op Status 1) Zone Status - As mentioned, when Service mode is initiated “Service Mode, 1) Diagnostics” appears
in the Technician's Display. Follow the steps below to work to and through Op Status Mode 1) Zone Status:
1. After initiating Service Mode, press COLDER key one (1) time; “Service Mode, 2) Op Status” appears on display.
2. Press ALARM key two (2) times (See Figure 3-48), and it is now possible to work through the following four (4)
levels:
1} *Z1 +/ Cooling; +/- Def” = Zone 1 15
cooling, or defrosting. 4
2) “Z2 Not Present” = Zone 2 is currently
not present in this appliance.
3) “Z3 +/- Cooling; +/- Def’ = Zone 3 is e ECO
cooling, or defrosting. =4 00H
4) “ZA +1- Cooling; +/- Def” = Zone 4 is <a DEF
cooling, or defrosting.
J
[er | [em
| Press ALARM key 2 times |
Figure 3-48. Key Strokes and Tech Display - Operational Status, Zone Status
oi [erm] [om
)warmer] | |] coLDER | ;
3-33 #3758440 - Revision B - November, 2006
Electronic Control System
Pro-Series (648PRO)
2) ice Maker - As mentioned, when Service mode is initiated “Service Mode, 1) Diagnostics” appears in
the Technician's Display. Follow the steps below to work to Op Status Mode 2) Ice Maker:
1. After initiating Service Mode, press the COLD-
ER key one (1) time; "Op Status, 1) Zone
Status” appears on display.
2. Press COLDER key one (1) time.
3. Press the ALARM key one (1) time {See Figure
3-49); “Ice Maker Status, Harvest (or
Production)” appears on dispiay.
(WARMER] 4
[cower] |}
= [= =)
ver | | comen | Barner | con | fuma]
| Press ALARM key 1 time |
Figure 3-49. Key Strokes and Tech Display - Operational Status, lce Maker
Service Mode, 3) Model Information (Sub) Mode
Accessing Mode! Information allows the Service Technician to verify, or change model configuration.
This page explains the steps for working through Model Information Mode. For sake of space, the directions that fol-
low will not explain or show what is seen in the display after each key stroke. Only the final, and/or desired result
will be explained and iltustrated.
As mentioned, when Service mode is initiated
“Service Mode, 1) Diagnostics” appears in the
Technician's Display. Follow the steps below to
work to and through Service Mode, 3) Model
Information (Sub) Mode:
1. After initiating Service Mode, press the COLD-
ER key two (2) times; “Service Mode, 3) Model
Info” appears on display.
2. Press ALARM key two (2) times (See Figure 3-
50), and it is now possible to select, change, or
verify model configuration.
WARMER 2
| ALARM
(cower) <b
j'couver| unen] | кемакея ||} vowes
—— fe] fem] foca] fa]
| Press ALARM key 2 times |
Figure 3-50. Key Strokes and Tech Display - Model Information
#3758440 - Revision B - November, 2006
Pro-Series (648PRO) Electronic Control System
Service Mode, 4) Version Information (Sub) Mode
Accessing Version Information allows the Service Technician to recall all the electronic control modules software ver-
sions and the E2 version of the main control board.
This page explains the steps for working through Version Information Mode. For sake of space, the directions that
follow will not explain or show what is seen in the display after each key stroke. Only the final, and/or desired result
will be explained and illustrated.
As mentioned, when Service mode is initiated WARMER 4
“Service Mode, 1) Diagnostics” appears in the
Technician's Display. Follow the steps below to
work to and through Service Mode, 4) Version <- lercion Ine >
Information (Sub) Mode: _ E gl
LonCroi Gi.z.=
1. After initiating Service Mode, press the COLD- <= = | ALARM
ER key three (3) times; “Service Mode, 4)
Version Info” appears on display.
2. Press ALARM key one (1) time (See Figure 3-
51), and it is now possible to toggle down
through the software version information.
[comer] |}
‚сое | —
| с MAKER { | POWER
[o] fume] feo] fun
| Press ALARM key 1 time — |
Figure 3-51. Key Strokes and Tech Display - Version Information
3-35 #3758440 - Revision B - November, 2006
Electronic Control System Pro-Series (648PRO) Deua-zenod
#3758440 - Revision B - November, 2006 3-36
sus-zeno 4 Pro-Series (648PR0O) Sealed System Information
Де «д. “бб Sy
SECTION 4
SEALED SYSTEM
INFORMATION
Sealed System Information Pro-Series (648PRO)
HFC-134a REFRIGERANT SERVICE INFORMATION
The Pro Series sealed systems contain HFC-134a refrigerant. This section provides general rules for working with
134a, and procedures to be followed while servicing the sealed system. This is followed by diagrams illustrating
sealed system operation, then model-specific refrigerant flow diagrams.
A CAUTION
134a refrigerant requires Synthetic Ester oil in the compressor, and does not tolerate contamination from
other refrigerants, moisture, petroleum-based lubricants, silicone lubricants, cleaning compounds, rust
inhibitors, leak detection dyes, or any other type of additive.
General Rules for Working with 134a Refrigerant
» Use equipment dedicated to 134a sealed system service only.
* Use only 134a refrigerant for back-flushing and sweep charging.
« Always replace the filter-drier when servicing the sealed system.
+ The filter-drier must be cut from the sealed system. Never un-braze the drier as the heat will drive moisture
back into the sealed system.
° Do not leave sealed system nor replacement compressor open to the atmosphere for more than 10 minutes.
* When the rubber plugs are pulled from the service compressor, a release of pressure should be heard. If no
release of pressure is heard, do not use the compressor.
- Use ONLY virgin 134a refrigerant when recharging the sealed system.
#3758440 - Revision B - November, 2006 4-2
Deue-zanod Pro-Series (648PRO) Sealed System Information
| PRO SERIES SEALED SYSTEM REPAIR PROCEDURES |
Problem Service Procedures
Capture refrigerant
Replace Compressor
Replace filter-drier
Evacuate or sweep charge system
NOTE: If evacuating refrigerator sealed system, unit must be evacuated from the low & high
sides due to refrigerant valve. If sweep charging refrigerator sealed system, refrigerant valve
must be energized during procedure. (See Diagnostics 4) Activate Zone in Section 3)
e. Recharge system with Virgin 134a refrigerant
Noisy Compressor
ap59
(NOTE: To check for a non-
operating compressor, a hard
Non-Operating, Inefficient,
start kit can be used)
High Side leak Capture refrigerant
Repair leak
Replace filter-drier
Evacuate or sweep charge system
NOTE: If evacuating refrigerator sealed system, unit must be evacuated from the low & high
sides due to refrigerant valve. If sweep charging refrigerator sealed system, refrigerant valve
must be energized during procedure. (See Diagnostics 4) Activate Zone in Section 3)
e. Recharge system with Virgin 134a refrigerant
ap oo
Low Side Leak Capture refrigerant
Repair leak (if at solder joint) or replace part
Back flush high side of sealed system
If all refrigerant has escaped and system is in a vacuum, replace compressor
Replace filter-drier
Evacuate or sweep charge system
NOTE: If evacuating refrigerator sealed system, unit must be evacuated from the low € high
sides due to refrigerant valve. If sweep charging refrigerator sealed system, refrigerant valve
must be energized during procedure. (See Diagnostics 4) Activate Zone in Section 3)
g. Recharge system with Virgin 134a refrigerant
maß TH
Capture refrigerant
Repair leak (if at solder joint} or replace part
Back flush high side of sealed system
Replace compressor
Replace filter-drier
Replace heat exchanger if cap tube is clogged
install a low side drier on suction tube
Evacuate or sweep charge sealed system
NOTE: If evacuating refrigerator sealed system, unit must be evacuated from the low é high
sides due to refrigerant valve. If sweep charging refrigerator sealed system, refrigerant valve
must be energized during procedure. (See Diagnostics 4) Activate Zone in Section 3)
i. Recharge with Virgin 134a refrigerant
System
Examples:
> Burned out compressor
> Excessive moisture from
leak in condensate loop or
in low side
> Plugged capillary tube
топоров
Restriction Capture refrigerant
Locate and remove restriction or locate and replace part
Back flush high side of sealed system
Replace filter-drier
e. Evacuate or sweep charge system
NOTE: If evacuating refrigerator sealed system, unit must be evacuated from the low é high
sides due to refrigerant valve. If sweep charging refrigerator sealed system, refrigerant valve
must be energized during procedure. (See Diagnostics 4) Activate Zone in Section 3)
f Recharge system with Virgin 134a refrigerant.
(NOTE: If restriction is due fo
sealed system being contami-
nated, see Contaminated
Sealed System above.)
an
Overcharge a Capture refrigerant
b. Replace filter-drier
С. Evacuate or sweep charge system
NOTE: If evacuating refrigerator sealed system, unit must be evacuated from the low & high
sides due to refrigerant valve. If sweep charging refrigerator sealed system, refrigerant valve
must be energized during procedure. (See Diagnostics 4) Activate Zone in Section 3)
d. Recharge system with Virgin 134a refrigerant
4-3 #3758440 - Revision B - November, 2006
Sealed System Information
Pro-Series (648PRO) Peua-zenod
FREEZER SEALED SYSTEM OPERATION
The following six diagrams illustrate a 648PRO freezer
sealed system. The components are listed in order of
refrigerant flow, with an explanation of their fundamental
role as part of a sealed system.
(1) - Compressor (Figure 4-1)
The compressor creates a high side and low side pressure
difference in the sealed system by compressing the refrig-
erant gas, thus raising the pressure and temperature. The
compressor pushes this high-pressure/high-heat gas
through the discharge tube to the condenser.
(2) - Condenser (Figure 4-2)
The high-pressure/high-heat gas travels through the con-
denser, where the heat is dissipated by cooler air being
drawn over the condenser tubing by the condenser fan.
This changes the gas into a high-pressure/warm liquid that
is then routed through the door gasket seat heater loop to
prevent sweating, and through the drain pan heater loop fo
help evaporate water in the drain pan. The high-pres-
sure/high-heat gas then enters the high-side filter-drier.
(3) - High-Side Filter-Drier (Figure 4-3)
The high-pressure/warm liquid travels through the high-
side filter-drier, which removes moisture from the refriger-
ant before it enters the capillary tube.
Fu
Condenser
Door Gasket
Seat Heater
Loop
Drain Pan
Heater Tubing
Figure 4-2. Condenser
43758440 - Revision B - November, 2006 4-4
Figure 4-1. Compressor
High-Side Filter-Drier J (3)
Figure 4-3. High-Side Filter-Drier
Deue-zenod Pro-Series (648PRO)
Sealed System Information
(4) - Capillary Tube (Part of Heat Exchanger) (Fig. 4-4)
The high-pressure/warm liquid refrigerant travels through
the long skinny capillary tube which is attached to the suc-
tion tube (these two tubes soldered together create the
heat exchanger). As the high-pressure/warm liquid refrig-
erant travels through the capillary tube it gives up heat to
the cool refrigerant gas traveling through the suction tube
and the pressure drops, so it is a low-pressure/cool liquid
before it enters the evaporator.
(5) - Evaporator (Figure 4-5)
As the low-pressure/coo! liquid refrigerant enters the evap-
orator, it vaporizes. This is caused by a dramatic pressure
change which occurs when the refrigerant enters the larger
diameter evaporator tubing from the smaller diameter capil-
lary tubing. This vapor travels through the evaporator
absorbing heat from the compartment, gradually converting
the vapor to a cool gas. This cool gas then enters the suc-
tion tube.
(6) - Suction Tube (& Heat Exchanger) (Figure 4-6)
The cool gas travels through the suction tube which is
attached to the capillary tube (as mentioned earlier, these
two tubes soldered together create the heat exchanger).
As this cool refrigerant gas travels through the suction tube
it absorbs heat from the warm liquid refrigerant traveling
through the capillary tube, making it a luke warm gas. The
lukewarm refrigerant gas returns to the compressor where
the process begins again.
|
|
|
|
|
|
/
I Evaporator
Figure 4-5. Evaporator
4-5
|
|
|
|
|
E,
|
|
|
|
|
|
|
|
O
Capillary Tube
Heat _ Ñ —
Exchanger
(5)
Figure 4-6. Suction Tube (Part of Heat Exchanger)
43758440 - Revision B - November, 2006
Sealed System Information
REFRIGERATOR SEALED SYSTEM OPERATION
Pro-Series (648PRO)
The following six diagrams illustrate a 648PRO refrigerator sealed system. The components are listed in order of
refrigerant flow, with an explanation of their fundamental role as part of a sealed system.
(1) - Compressor (Figure 4-7)
The compressor creates a high and low side pressure dif-
ference in the sealed system by compressing the refrigerant
gas, raising its pressure and temperature. The compressor
pushes the high-pressure/high-heat gas through the heater
loop in the muilion to prevent sweat, then to the condenser.
(2A) - Condenser (Figure 4-8)
The high-pressure/high-heat gas travels through the con-
denser, where the heat is dissipated by cooler air being
drawn over the condenser tubing by the condenser fan.
This changes the gas into a high-pressure/warm liquid that
then enters the high-side filter-drier.
(2B) - Filter-Drier (Figure 4-8)
The high-pressure/warm liquid travels through the high-side
filter-drier, which removes moisture from the refrigerant
before it enters the dual refrigerant valve.
(3) - Dual Refrigerant Valve (Figure 4-9)
A Tubing T-connection that is part of the dual refrigerant
valve has a bead inside. This bead is forced to one side or
the other of the T-connection, depending on the electrical
signal from the control board to the valve solenoid. When
the bead is to one side of the T-connection, that side is
closed, the other side is open. The open side allows the
high-pressure warm liquid to the appropriate capillary tube.
| ©
High-Side
Filter-Drier
Figure 4-8. Condenser & Filter-Drier
#3758440 - Revision B - November, 2006 | 4-6
Compressor
|
Door Gasket
Seat Heater |
gp SV
|
|
|
|
|
|
|
À
©
Dual 7 4
Refrigerant |
Valve |
|
|
Figure 4-9. Dual Refrigerant Valve
Pro-Series (648PRO)
Sealed System Information
(4) - Capillary Tube(s) (Figure 4-10)
The high-pressure/warm liquid refrigerant travels through the long skinny capillary tube which is attached to the suc-
tion tube (these two tubes soldered together create the heat exchanger). As the high-pressure/warm liquid refriger-
ant travels through the capillary tube it gives up heat to the cool refrigerant gas traveling through the suction tube
and the pressure drops, so it is a low-pressure/coo! liquid before it enters the evaporator.
(5) - Evaporator(s) (Figure 4-11)
As the low-pressure/cool liquid refrigerant enters the evapo-
rator, it vaporizes. This is caused by a dramatic pressure
change which occurs when the refrigerant enters the larger
diameter evaporator tubing from the smaller diameter capil-
lary tubing. This vapor travels through the evaporator
absorbing heat from the compartment, gradually converting
the vapor to a cool gas. This cool gas then enters the suc-
tion tube.
(6) - Suction Tube(s) & Heat Exchanger(s) (Figure 4-12)
The cool gas travels through the suction tube which is soi-
dered to the capillary tube (as mentioned earlier, these two
tubes soldered together create the heat exchanger). As this
cool refrigerant gas travels through the suction tube it
absorbs heat from the warm liquid refrigerant traveling
through the capillary tube, making it a luke warm gas.
(There is a suction tube “T” connection that diverts the two
separate suction tubes from the evaporators to one suction
tube that enters the compressor.) The lukewarm refrigerant
gas is pulled back to the compressor (via vacuum force),
where the process begins again.
Y 7 Capillary |
Tube(s) |
Fig. 4-10.Capillary Tube(s)-Part of Heat Exchangers
|
4
|
|
|
|
evaporators) |
|
|
| a
|
|
|
Figure 4-11. Evaporator(s)
4-7
T-Connection -—
>
Y
A
Heat
Exchanger(s)
Suction <
Tube(s)
Figure 4-12. Suction Tube(s) & Heat Exchanger(s)
#3758440 - Revision B - November, 2006
Sealed System Information Pro-Series (648PRO) Faus-zenod
REFRIGERANT FLOW DIAGRAMS
Suction T-Connection
Refrigerator Compressor
Refrigerator Drier
Freezer Compressor
Condenser
Freezer Drier
Dual
Refrigerant Upper
Freezer Heat Exchanger Valve Refrigerator
Heat Exchanger
Upper
Refrigerator
Evaporator
Freezer Heater Loop
Lower
Refrigerator
Heat Exchanger
. Freezer Evaporator Lower
Refrigerator
Evaporator
Drain Pan Heater Refrigerator Heater Loop
Figure 4-13. Models 648PRO Refrigerant Flow
#3758440 - Revision B - November, 2006
sus-zero / Pro-Series (643PRO) Airflow & Fan Blade Spacing
SECTION 5
AIRFLOW
AND
FAN BLADE SPACING
Airflow & Fan Blade Spacing Pro-Series (648PR0) Peun-z=nod
AIRFLOW DIAGRAMS
UPPER REFRIGERATOR
FAN BRACKET TO FAN
BLADE HUB SPACING
1-3/8" + 1/1 J
(34.33 mm £ 1.58 mm)
Clamp Down
FREEZER
FAN BRACKET TO FAN
BLADE HUB SPACING
LOWER REFRIGERATOR
FAN BRACKET TO FAN
BLADE HUB SPACING
— k—1 -3/16" + 1/16"
(30.16 mm + 1.59 mm)
1-1/8" + 1/16"
(28.58 mm + 1.59 mm)
Clamp Up
»
WN
Figure 5-1. Air Flow and Fan Blade Spacing, Model 648PRO
#3758440 - Revision B - November, 2006 5-2
beuezanod Pro-S eries (648PRO) Icemaker Information
SECTION 6
ICEMAKER INFORMATION
6-1 #3758440 - Revision B - November, 2006
Icemaker Information
Pro-Series (648PRO)
ICEMAKER SYSTEM INFORMATION
The model 648PRO utilizes a MidSouth 6 icemaker, or
a Japan-Servo € icemaker, for which the operating
characteristics of each are similar.
lcemaker operation is not complex, but icemaker com-
ponents and operation cycles should be understood by
a Service Technician in order to make proper diagnosis.
TO AVOID ELECTRIC SHOCK, ALWAYS DISCON-
NECT ELECTRICAL POWER TO UNIT WHEN SER-
VICING ICEMAKER.
NOTE: The ICE MAKER key at the control panel acti-
vates the icemaker system. If the ice making icon is
not displayed on the LCD, the icemaker system is OFF.
NOTE: To allow ice to freeze fully and reduce effects of
low water pressure, the electronic control disables the
icemaker system for 45 minutes after each ice harvest.
ICEMAKER COMPONENTS
Following are descriptions that explain the function of
each icemaker component. The components are dia-
gramed in Figure 6-1 on the next page.
Support - The support is the housing around the elec-
trical components and wire connections. The support is
attached to the ice mold.
Mounting Plate - The drive motor, holding switch,
water valve solenoid switch, timing gear, timing cam
and water fill adjusting screw are attached to the metal
mounting plate. The mounting plate is then attached to
the support.
Drive Motor - AC power supplied to the drive motor
causes the motor to operate. The motor has a single
output shaft with a small gear. The motor gear
drives/spins the timing gear.
Timing Gear - The timing gear is driven/spun by the
drive motor gear and is attached to the timing cam.
Timing Cam - The timing cam is attached to the tim-
ing gear, and the ice ejector is inserted into the center
of the timing cam. As the timing cam rotates, high and
low spots on the cam operate the water valve solenoid
switch and the holding switch. The timing cam aiso
moves the lever arm side to side and rotates the ice
ejector.
#3758440 - Revision B - November, 2006
fce Mold - The ice mold is where the eight crescent
shaped ice cubes are formed.
Mold Heater - The mold heater uses 175 watts to
thaw the ice free from the mold.
Ice Ejector - The drive end of the ice ejector is "D”
shaped to fit into the “D” shaped hole in the timing cam.
It has eight blades which rotate and sweep the ice from
the mold cavities during the ejection phase of the cycle.
Ice Stripper - The stripper is attached to the dumping
side of the mold, serving as a decorative side cover and
it also prevents ice from falling back into the mold.
Bearing / Inlet - The bearing / inlet is attached to the
ice mold, opposite the support. Water enters the bear-
ing / inlet and is directed to the ice mold. The
bearing/inlet also supports the ice ejector at the end
opposite the timing cam.
Thermostat - The thermostat is a single-pole, single-
throw, bi-metal switch. At 15°F (-9°C) + 3° it closes,
starting the ice ejection phase.
Thermal-Mastic - A substance similar in appearance
to grease that is applied between the thermostat and
the ice mold. Its purpose is to increase thermal con-
ductivity between the mold and the thermostat.
Lever Arm and Shut-off Arm - The lever arm is
moved side to side by two revolutions of the timing
cam. As it moves, it raises and lowers the shut-off arm
and operates the shut-off switch to control quantity of
ice production. [f shut-off arm comes to rest on top of
the ice in the storage bin during either revolution, the
shut-off switch will remain open, stopping ice production
at the end of that revolution.
Water Valve Solenoid Switch - A single-pole, double-
throw type switch that allows electricity to the water
valve solenoid, opening the valve, during the fill cycle.
Holding Switch - A single-pole, double-throw type
switch that assures completion of a revolution once the
icemaker has been energized.
Shut-off Switch - A single-pole, double-throw type
switch that stops ice production when the ice bin is full.
TCO (Thermal Cut Out) - The TCO is thermal protec-
tion device in the wire harness that would open in the
event of mechanical failure, thus protecting against over
heating. (The TCO is not shown in diagram.)
Pro-Series (648PRO) Icemaker Information
Ice Ejector
(Location of Thermal-Mastic)
Shut-off Switch Bearing / Inlet
Support
Thermostat
Drive Motor >.
Holding Switch
Ice Stripper
Support Plate
ice Mold and Mold Heater
Timing Gear Ice Level Arm
Lever Arm
Timing Cam
Water Valve Solenoid Switch
Figure 6-1. Diagram of Icemaker Components
ICEMAKER OPERATION | 118VOLTS N
The following series of electrical schematics illustrate a и
typical icemaker cycle of operation. Below each SHUT-OFF SWITCH THERMOSTAT
schematic is a diagram indicating the approximate ¡oca- RO MOLD HEFTER
tion of the ice ejector and ice level arm during the
phase the schematic indicates.
Freeze Phase of Ice Making Cycle (See Figure 6-2) SOLENOID SWITCH
* The ice moldis filled with water. "0000 — 5 MOTOR
* The thermostat is open. WATER
« No icemaker componentS are energized. SOLENOID с Incl) +
С
HOLDING SWITCH
== = -
APPROXIMATE POSITION |
OF ICE EJECTOR AND
ICE LEVEL ARM
DURING OPERATION |
\
\ \ ICE BUCKET |
Es O —o—U———;— ak _—_—_— — —B
Figure 6-2. The Freeze Phase
6-3 43758440 - Revision B - November, 2006
Icemaker Information Pro-Series (648PRO)
Start of the First Revolution (See Figure 6-3) | 115 VOLTS
60 CYCLES TCO
* The water in the ice mold has turned to ice.
* At 15°F (-9°C) + 3° the thermostat closes. SHUT-OFF SWITCH ~~ THERMOSTAT
* Mold heater is energized through the thermostat. La MOLD HEATER
+ The drive motor is started through the thermostat = “CC
and “normally closed” terminal of the holding switch.
* The ice ejector begins to turn and the shut-off arm \
begins to rise. SOLENOID SWITCH
AU | MOTOR
WATER
SOLENOID ED.
HOLDING SWITCH
i |
APPROXIMATE POSITION | |
OF ICE EJECTOR AND
ICE LEVEL ARM \ |
DURING OPERATION
VL ICE BUCKET |
Figure 6-3. Start of First Revolution
First Revolution Continued (See Figure 6-4) | 115 VOLTS
60 CYCLES TCO
* The holding switch is tripped by the timing cam to
“normally open” thus holding power to the motor. SHUT-OFF SWITCH THERMOSTAT
* The mold heater remains energized through the ther-
mostat.
* The shut-off arm begins to rise.
MOLD HEATER
SOLENGID SWITCH
ve
MOTOR
WATER
SOLENOID С INC] {
HOLDING SWITCH
i |
APPROXIMATE POSITION | |
OF ICE EJECTOR AND ICE MOLD
ICE LEVEL ARM 1 NY i
DURING OPERATION
\ ICE BUCKET |
Figure 6-4. First Revolution Continued
#3758440 - Revision B - November, 2006 6-4
Pro-Series (648PRO)
Icemaker Information
First Revolution Continued (See Figure 6-5)
« The ice ejector reaches the ice in the mold.
+ The ice releases from the mold as the ejector blades
begin to rotate the cubes out.
+ The drive motor remains energized through the hold-
ing switch.
« The mold heater remains energized through the ther-
mostat.
+ As the shut-off arm rises, the shut off switch is
tripped to “normally closed”, and then the shut-off
arm begins to lower.
First Revolution Continued (See Figure 6-6)
+ The ice has released from the mold.
+ The motor remains energized through the holding
switch.
« The shut-off arm is lowered and the shut off switch is
tripped to “normally open”.
+ The water valve solenoid switch is tripped by the tim-
ing cam, but the solenoid is not energized, because
the thermostat is still closed and is energizing the
mold heater. (Electric current follows the path of
least resistance.)
445 VOLTS
60 CYCLES тсо
SHUT-OFF SWITCH THERMOSTAT
MOLD HEATER
[NO]
SOLENOID SWITCH
MOTOR
WATER
SOLENCID
HOLDING “<
{
APPROXIMATE POSITION |
OF ICE EJECTOR AND ICE MOLD
ICE LEVEL ARM
DURING OPERATION |
ı | ICE BUCKET
Figure 6-5. First Revolution Continued
115 VOLTS
60 CYCLES тсо
SHUT-OFF SWITCH - THERMOSTAT
MOLD HEATER
FE
SOLENOID SWITCH |
nf | u J
(AN! — (TRIED =
= m = Y | MOTOR
WATER A
SOLENOID ick de Fd
HOLDING SWITCH
DES = -
%
ICE MOLE
{
APPROXIMATE POSITION |
OF ICE EJECTOR AND
ICE LEVEL ARM \
DURING OPERATION
\
\ q ICE BUCKET
LE — — анны — A
Figure 6-6. First Revolution Continued
43758440 - Revision B - November, 2006
Icemaker Information Pro-Series (648PRO)
End of First Revolution (See Figure 6-7) 115 VOLTS
60 CYCLES TCO
* The water valve solenoid switch is tripped by the
timing cam back to “normally open.” SHUT-OFF SWITCH ~~ THERMOSTAT
* The timing cam trips the holding switch to “normally — Er, MOLD a a
close,” which ends the first revolution, but the Ne]
thermostat is still closed, so the motor is again start-
ed.
* The mold heater remains energized through the ther- SOLENOID SWITCH
mostat. i ) i [Eva
> MOTOR
WATER
SOLENCID le]
HOLDING SWITCH
A
APPROXIMATE POSITION | |
OF ICE EJECTOR AND ICE MOLD
ICE LEVEL ARM
DURING OPERATION \ !
Vo ICE BUCKET |
Figure 6-7. End of First Revolution
Start of Second Revolution:(See Figure 6-8) ] 715 voLTS
60 CYCLES TCO
- The water valve solenoid switch is tripped by the
timing cam back to “normally open.” SHUT-OFF SWITCH — THERMOSTAT
* The timing cam trips the holding switch to “normally №] MOLD HEATER
close,” which ends the first revolution, but the
thermostat is still closed, so the motor is again start- С
ед.
- The mold heater remains energized through the ther- SOLENOID SWITCH
mostat. - 0000 — |
MOTOR
WATER
SOLENOID
r
RI
1 ы
HOLDING SWITCH
| бен = =
APPROXIMATE POSITION |
OF ICE EJECTOR AND
ICE LEVEL ARM \
DURING OPERATION
\ ICE BUCKET ]
"ba а ЛЕ — — — —
Figure 6-8. Start of Second Revolution
#3758440 - Revision B - November, 2006 6-6
Pro-Series (648PRO)
Icemaker Information
Second Revolution Continued (See Figure 6-9)
The mold heater has warmed the thermostat, so the
thermostat opens, and the mold heater is de-ener-
gized.
if the shut-off arm comes to rest on top of the ice in
the storage bin (as illustrated), the shut-off switch
will remain in the “normally closed” position.
The motor remains energized through the holding
switch.
Second Revolution Continued (See Figure 6-10)
The water valve solenoid switch is tripped by the tim-
ing cam. This time the solenoid is energized
because the thermostat is open. The water solenoid
is open for approximately seven seconds, filling the
ice mold with water.
The mold heater is energized through the solenoid
switch and holding switch.
115 VOLTS
60 CYCLES тсо
SHUT-OFF SWITCH ~~ THERMOSTAT
INO]
NCL )
\
MOLD HEATER
SOLENOID SWITCH
= 7 |
MOTOR
WATER
SOLENOID ¡er NC
HOLDING SWITCH
Fe
} Y |
APPROXIMATE POSITION | |
OF ICE EJECTOR AND ICE MOLD
ICE LEVEL ARM
DURING OPERATION |!
VoL ICE BUCKET
Figure 6-9. Second Revolution Continued
115 VOLTS
60 CYCLES TCO
SHUT-OFF SWITCH THERMOSTAT
MOLD HEATER
NO
N
SOLENOID SWITCH
MOTOR
WATER
SOLENOID
3
HOLDING SWITCH
TE
f |
APPROXIMATE POSITION | |
OF ICE EJECTOR AND ICE MOLD
ICE LEVEL ARM \ |
DURING OPERATION
\ ICE BUCKET - |
\ A
— ,_ ан —_— —; —
Figure 6-10. Second Revolution Continued
43758440 - Revision B - November, 2006
Icemaker Information Pro-Series (648PRO)
End of ice making Cycle (See Figure 6-11) 115 VOLTS |
60 CYCLES TCO
* The water valve solenoid switch is tripped by the tim- y юн
ing cam back to "normally open” ending the water fill. SHUT-OFF SWITCH ~~ THERMOSTAT
* The timing cam trips the holding switch to “normally
close,” which ends the second revolution.
* The thermostat is still open, so it does not start the
drive motor.
+ If the shut-off arm has come to rest on top of the ice
MOLD HEATER
in storage bin (as illustrated), the shut-off switch re- in Ré
mains in the “normally closed” position. "Qu |
This interrupts power from reaching the thermostat, WATER
until sufficient ice has been removed from the stor- SOLENOID
age bin allowing the shut-off arm to lower.
NOTE: To allow ice to freeze fully and reduce effects of r HOLDING swiTen 00
low water pressure, the electronic control system dis-
ables the icemaker system for 45 minutes after each ice
harvest.
APPROXIMATE POSITION |
OF ICE EJECTOR AND
ICE LEVEL ARM
DURING OPERATION
\
\ 0 ICE BUCKET |
Figure 6-11. End of Ice Making Cycle
MANUALLY STOPPING ICE PRODUCTION
Ice production can be manually stopped by pressing the
ICE MAKER key on the control panel so that the ice
making icon is not displayed on the left User Display.
NOTES:
* If the ice level arm sticks in the “up” position, ice pro-
duction will stop (See Figure 6-12). |
* Removing the ice bucket will NOT stop ice produc-
tion, as there is no ice maker rocker-switch used in
this series.
Icemaker will Stop
Arm DOWN,
Icemaker wil! Operate
Figure 6-12. Stopping Icemaker
#3758440 - Revision B - November, 2006 6-8
Deus-zenod Pro-Series (648PRO)
Icemaker Information
MANUALLY STARTING THE ¡CEMAKER
NOTE: To allow ice to freeze fully and reduce effects of
low water pressure, the electronic control disables the
icemaker system for 45 minutes after each ice harvest.
To bypass this 45 minute dwell for service purposes,
press the the ICE key at the control panel.
Manual Start Procedure:
1. Pry the icemaker front cover from the support using
a flat-blade screwdriver or coin.
2. With a flat-blade screwdriver, turn the drive gear
counterciockwise until the holding switch is activat-
ed, completing the circuit to the drive motor (this will
be about a 1/8 turn). (See Figure 6-13) The ice-
maker will then complete its cycle automatically.
NOTE: If after 1/4 turn the icemaker is not running on
its own, it may be in the 45 minute dwell period or there
is an electrical or mechanical problem.
ADJUSTING WATER FILL LEVEL
Proper water fill level for a MidSouth icemaker is 100 -
110 cc's (3.5 - 3.75 oz). If the fill level is checked and
needs to be adjusted, tum the water fili adjusting screw
clockwise to reduce fill level, or counterclockwise to
increase fill level. One ful! turn of the screw equals 15
cc's. (See Figure 6-14)
NOTE: Always check fill level before making any
adjustments of the water fill adjusting screw.
6-9
Turn Drive Gear
Counterclockwise
Figure 6-13. Manually Start icemaker
Water Fill Adjusting Screw
1 Full Turn Equals 15 CC's
Tum Clockwise to Reduce Fill
Figure 6-14. Adjust Water Fill Level
#3758440 - Revision B - November, 2006
icemaker Information
Pro-Series (648PRO) Paue-zanod
ICEMAKER FAULT TESTING
Bypass 45-minute dwell by pressing ICE ON/OFF key to OFF
then ON. Then depress icemaker switch & manually start ice-
maker by turning driver gear counter-clockwise with screw-
driver.
1 If icemaker starts & finishes cycle:
(NOTE: If >15°F (-9°C), icemaker will only complete 1
revolution.)
a. Visually inspect electrical connections at icemaker &
valve. Repair if necessary.
b. Check valve operation with test cord, if doesn't open,
replace.
c. Check thermostat. Open: 48° (9°C) + 6°, Close: 15°
(-9°C) + 3°. Replace icemaker if defective.
d. With icemaker in park position, check solenoid switch
terminals "C" & "NO" for continuity. With ejector
between 8:00 & 10:00 position, check solenoid switch
terminals "C" & "NC" for continuity. If no continuity for
either terminal check, replace icemaker.
If icemaker starts but does not finish cycle:
a. With icemaker in park position check holding switch ter-
minals "C" & "NC" for continuity. Then with icemaker
ejector between 10:00 & 12:00, check holding switch
terminals "C" & "NO™ for continuity. If no continuity for
either terminal check, replace icemaker. (Refer to
enclosed wiring diagram)
With icemaker in park position check shut-off switch
terminals "C" & "NO" for continuity. With ejector
between 12:00 & 2:00 check shut-off switch terminals
"C" & "NC" for continuity. If no continuity for either ter-
minal check, replace icemaker.
Check mold heater for 75-85). if outside range,
replace icemaker.
If icemaker motor does NOT start:
a. Lower shutoff arm
b. Check motor operation with test cord. If motor doesn't
run, replace icemaker.
Check power to & from icemaker switch. Reconnect or
repair connection or replace icemaker as necessary.
Check for 115V AC from control board. If power is pres-
ent check & repair connection. If no power, replace
control board.
©.
QUICK REFERENCE
+ Water Fill Time - 6.31.2 seconds
* Fill Tube Heater Ohm - 2850-38900
Mold Heater Ohm - 75-850
Water Valve Ohm - 160-1650
Thermostat - Open: 48° (9°C) + 6”, Close: 15° (-9°C) + 3°.
Water Pressure Needed - 20-100 psi constant
#3758440 - Revision B - November, 2006
6-10
Possible Problems
No / Slow Ice Production
Ice maker system switched OFF. Switch ice system ON.
Shut off arm in up/OFF position. Move to ON position.
Freezer too warm. Check temp’s & see troubleshooting
guide in service manual.
Poor airflow over icemaker. Remove obstructions.
Ice cube jam. Remove ice & check water fill setting.
a. Water fill setting too low (< 6.5 sec's). Adjust setting.
b. Water fill setting too high (> 7 sec’s). Adjust setting.
Water froze in inlet tube. Remove ice from tube. Check
for 115VAC from control board; Fill tube heater = 2850-
38900.
Water supply not constant 20-100 psi. instruct customer.
Water line to unit pinched/kinked. Repair water line.
Saddle valve not installed correctly to supply line.
Reposition.
10 Saddle valve not fully open. Open valve fully.
11 Icemaker wire/connections loose/broken. Repair wiring.
12 Water valve wire/connections loose/broken. Repair wiring.
13 Defective water valve. Check valve (160-1650), Replace
valve.
14 Thermostat wire/connections loose/broken. Repair wiring.
15 TCO overheat or short. Replace icemaker.
16 See icemaker Fault Testing.
No Water Fill
1 Water supply switched OFF. Switch supply water line ON.
2 Water line to unit pinched/kinked. Repair water line.
3 Saddle valve not installed correctly to supply line.
Reposition.
Water froze in inlet tube. Remove ice from tube. Check
for 115VAC from control board: Fill tube heater = 2850-
3890Q.
Water valve wire/connections lcose/broken. Repair wiring.
Defective water valve. Check valve (160-1650), Replace
valve,
—
7
8
9
Ww
Icemaker not level. Level icemaker.
Unit not level. Level unit
Water supply not constant 20-100 psi. Instruct customer.
Water fill setting too high (> 7 sec’s). Adjust setting.
Water fill setting too low (< 6.5 sec's). Adjust setting.
Defective water valve. Check valve (160-1650), Replace
valve.
Ice Cubes Hollow or Smal
lcemaker not level. Level icemaker.
Unit not level. Level unit
Water supply not constant 20-100 psi. Instruct customer.
Water fill setting too low (< 6.5 sec's). Adjust setting.
Too little thermalmastic on thermostat. Add thermalmastic.
Defective thermostat (Open: 48° (8°C) x 6°, Close: 15°
(-8°C) £ 3°. Replace icemaker if defective.
Rh + © № a
CO bh 62 № —
Too much Ice
1 Shut off arm/linkage bent/broken. Repair or replace
arm/linkage.
If ejector blades rotate with arm in up/OFF position -
Icemaker faulty. Replace icemaker.
2
Pro-Series (643PRO) Component Access/Removal
SECTION 7
COMPONENT ACCESS
AND REMOVAL
Component Access/Removal Pro-Series (648PRO)
COMPONENT ACCESS AND REMOVAL
This section explains how to adjust, access and/or remove components.
This section is arranged as follows: ...........................ere..1.m.0r0riiererene een ne erronea rare rranereneerenanen rene neroreeearerenea. Page:
* Exterior Cosmetic / Mechanical Components ................... eee sere ne rene enc rare erIrrareraerreravraoverArarEATECEND A 7-3
* Refrigerator Interior Cosmetic / Mechanical Components ...................... 0.222 000m0e Ra RR RR e RDA retenes 7-8
* Freezer Interior Cosmetic / Mechanical Components...............ee.eee ==. errerereerrereaciiee re ee re einer ereaereIrcanceeneerare mentores 7-15
* Compressor Area Mechanical Components ...............e..e=eiieciemciverecieee recen e recorrer erre errverrrrENrrUreCANE re aa rares een ressens 7-20
* Sealed System Components......................e.eeereeerierriee reee erre erro area raven rareereenevanerarretuerar TF EerrreaneU eme CEmEE ERC One rrrra veran erereve 7-21
An attempt has been made to arrange these procedures in such a way as to simulate which components would
need to be removed first in order to gain access to other components. When following a component removal proce-
dure, it may be necessary to reference another component removal procedure earlier in this section.
NOTE: Before continuing, please take note of the WARNINGS and CAUTIONS below.
IFIT IS NECESSARY TO REMOVE A UNIT FROM ITS INSTALLATION, REMEMBER THAT THE UNIT
COULD TIP WHEN PULLED FORWARD BEYOND THE ANTI-TIP COMPONENTS, RESULTING IN SERIOUS
INJURY OR DEATH. PULLING A UNIT FROM ITS INSTALLATION SHOULD ONLY BE PERFORMED BY AN
AUTHORIZED SERVICE TECHNICIAN OR INSTALLER.
« TO AVOID ELECTRIC SHOCK, POWER TO THE UNIT MUST BE DISCONNECTED WHENEVER ACCESS-
ING AND/OR REMOVING COMPONENTS POWERED BY ELECTRICITY OR COMPONENTS NEAR OTHER
ELECTRICAL COMPONENTS. IF THE UNIT IS PLUGGED IN, BUT HAS NOT BEEN SWITCHED ON BY
PRESSING THE UNIT ON/OFF KEY, AC VOLTAGE IS STILL PRESENT AT THE CONTROL BOARD.
› IF REMOVING A DOOR OR DRAWER, REMEMBER THAT DOORS AND DRAWERS ARE HEAVY. IF THEY
WERE TO FALL, THEY COULD CAUSE SERIOUS PERSONAL INJURY.
If working in the compressor area, remember that compressors and tubing may be hot.
- If working on or around an evaporator or condenser, remember that evaporator and condenser fins are
sharp.
#3758440 - Revision B - November, 2006 7-2
beuszenod Pro-Series (648PRO) Component Access/Removal
=
Exterior Cosmetic and Mechanical
Components
Kickplate Removal
The kickplate is located on the bottom of unit, between
the base assemblies.
To remove the kickplate, extract screws from left and
right corners of kickplate, then pull kickplate forward
(See Figure 7-1). Kickplate
Figure 7-1. Kickplate Removal
Drain Pan Removal 9 Р
The drain pan slides in from the front of unit on two side
brackets, coming to rest on a rear bracket. A locking
feature was formed into the drain pan, that drops into
notches at the front of the side brackets.
To remove the drain pan (See Figure 7-2):
1. Remove kickplate.
2. Push front of drain pan up slightly and pull forward.
Door/Drawer Handle Assembly Removal
A screw through the handle standoff into the handle Figure 7-2. Drain Pan Removal
secures the handle 10 the standoff. The standoff then
slides over a threaded stud that is attached to the door
shell,. A socket head set-screw inserted through the Handle Mount Screw Threaded Stud
standoff secures the standoff to the stud. т
To remove a handle assembly (See Figure 7-3): | |
ELLA
1. Use a 3/32” Allen-wrench to loosen the set-screw in
each handle standoff. Y
2. Pull handle assembly off of the threaded studs. de
\
Door Removal Handle Standoff
Set-Screw
To remove a door (See Figure 7-4):
NOTE: See WARNING at beginning of this section.
1. Open door to ninety (90) degrees.
3. Lift door up off off hinge pins.
Figure 7-3. Handle and Standoff Cut-Away View
| I f
ПО,
1
i
i
7
i
NOTE: Hinge pins sit loosely in hinge assemblies. — =
Take care to not drop the hinge pins during this pro- —=. |
cedure. =f
— ° i Hinge Pin
| Cabinet Hinge
Assembly
Figure 7-4. Door Removal
#3758440 - Revision B - November, 2006
Component Access/Removal
Pro-Series (648PRO)
Drawer Assembly Removal
To remove a drawer assembly (See Figure 7-5):
1. Open drawer until the slides are fully extended.
2. Lift front of drawer up, then continue pulling drawer
forward, off of slides.
Door and Drawer Gasket Removal
A dart at the back of the door and drawer gaskets fit
into channels built into the door and drawer liners.
NOTE: To remove a drawer gasket, the drawer must
be removed from the unit.
To remove a door, or drawer gasket, pull the gasket
dart from the channel! in the door, or drawer (See
Figure 7-6).
NOTE: On older models, silicone may have been used
at the corners of the gasket to help hold it in place.
Cabinet Hinge Assembly Removal
Cabinet hinge assemblies are mounted to the exterior
of the appliance. The upper hinge assemblies house
the door light switches.
To remove a cabinet hinge assembly:
1. Remove door.
2. Extract hinge mounting screws (See Figure 7-7).
3. Disconnect wire leads from unit (See Figure 7-8).
#3758440 - Revision B - November, 2006
|
UN
NO
©
A
Figure 7-6. Door/Drawer Gasket Removal
FE
Hinge Mounting Screws
ле
E
PT
(3)
WE
Figure 7-8. Disconnect Wire Leads
7-4
Pro-Series (648PRO)
Component Access/Removal
Water Filter Removal
The water filter is located behind the grille assembly.
To remove the water filter:
1. Lift Louvered section of grille assembly up (See
Figure 7-9).
2 Rotate filter counterclockwise to remove it (See
Figure 7-10); clockwise to install it.
NOTE: The water filter timer will reset to a one year
countdown when the filter is replaced. If the water filter
was removed only to service other components, press
the filter switch five times within five seconds to allow
the filter timer to continue the original countdown. A
beep will be emitted indicating the original countdown
has been resumed.
Water Valve Removal
The water valve is attached to the back side of the
water valve bracket, located behind the grille assembly.
NOTE: Before continuing, disconnect or switch off
water supply. |
To remove the water valve (See Figure 7-11):
Lift Louvered section of grille assembly up.
Rotate water filter counterclockwise to remove it
Extract mounting screws from mounting bracket.
Disconnect wire leads from vaive.
Disconnect water lines from valve.
Extract mounting screws from valve mounting
bracket.
On SON A
A le
Г
Figure 7-9. Lift Grille Louvers
o
— ZN
TD
В
INE E =>
Figure 7-10. Water Filter Removal
E Water Valve Л Electrical
| A0 Connection
Screws +
Hs Water
Water = |
Connection” i | Connection
Figure 7-11. Water Valve Removal (Rear View)
#3758440 - Revision B - November, 2006
Component Access/Removal Pro-Series (648PR0) Peunzenod
Grille Assembly Removal
The grille assembly is located at top front of the unit.
The grille Louvers can be lifted up to provide access to
the technician display and sealed system components. ?
To remove the grille assembly (See Figure 7-12): | —
1. Lift Louvered section of grille assembly up.
2. Disconnect communication cable from behind the 5
Technician display cover, and remove any cable tie-
downs. 7/16” (11) Grille Panel
3. Extract the bolts holding the grille assembly to the Bolts
top of the refrigerator.
4. Extract the mounting screw to right of center, then
Figure 7-12. Grille Assembly Removal
lift the assembly from the top of the appliance. 9 п sembly va
Gas Grille Spring Cylinder Valve Removal
To remove a gas grille spring cylinder valve (See Figure
7-13):
1. With smali flat bladed screwdriver, expand the
retaining clips at each end of the gas grilie spring
away from the stud mounts.
2. Then, pull each end from the mounts.
Cylinder
User Display Removal Mount
The two User Displays are mounted in the grille assem-
bly. The left User Display is for the freezer zone and Figure 7-13. Cylinder Valve Removal
the right User Display is for the two refrigerator zones.
To remove a User Display (See Figure 7-14):
1. Remove the grille assembly.
2. Disconnect the communication cables from display
being removed. Communication Cables
3 Extract mounting screws securing the displays to — eT ZII — — = — zo
the grille assembly. | en
Figure 7-14. User Display Removal (Rear View)
#3758440 - Revision B - November, 2006 7-6
Pro-Series (648PRO)
Component Access/Removal
Main Controller Board Removal
NOTE: Electrical shock hazard. Refer to WARNING
at beginning of sectioN.
The main control board is located on top of the unit,
behind the grille assembly, to the right of the condenser,
and is covered by a control cover.
To remove the main controller board (See Figure 7-15):
1. Extract screws along front flange of cover.
2. Work wire leads and grommets down and out
through key-hole slots in sides of cover, while lifting
front of cover up.
3 Disconnect wire leads from DC power supply locat-
ed inside the control cover. Control cover is now
free to be removed.
4. Disconnect all wire leads from main controller
board.
5. Extract mounting screws securing control board to
unit top, then lift board out.
Unit Shroud Removal
The unit shroud houses the sealed system and techni-
cian display.
To remove the unit shroud (See Figure 7-16):
1. Remove the grille assembly.
2 Extract screws along left side and rear flange of unit
shroud.
3. Extract screws from top of unit shroud, above con-
denser.
4. Lift stroud from top of unit.
DC Power Supply
a pe
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x A NN
CO EZ: << æ — Wire Leads
= e E ANN ToDC Power
Supply
Figure 7-15. Control Board (Right Side View)
Figure 7-16. Top Cover Removal
#3758440 - Revision B - November, 2006
Component Access/Removal Pro-Series (64aPRo) Fsus-zenod
Refrigerator Interior Cosmetic and Mechanical Components
Refrigerator Slide Bin Removal | | | | |
|
Slide bins fit into guideways under either side of any of | |
the refrigerator shelves. — | ‘ |
To remove a slide bin, pull it forward, out of the guide- |
ways (See Figure 7-17). \
Refrigerator Shelf Adjustment and/or Removal
To adjust and/or remove a refrigerator shelf, lift up at
front slightly, then lift back up and out of shelf ladders
(See Figure 7-18).
Upper Refrigerator Light Diffuser Removal
The refrigerator light diffuser is located at the top of the
compartment. The light diffuser is held in place by C-
shaped clamps fitting over pegs protruding from the | |
side walls (See Figure 7-19). | |
unit to disengage C-shaped clamps from the pegs in
the side wall, then lower the diffuser down and pull from
the compartment.
To remove the light diffuser, push diffuser toward rear of | _ |
Figure 7-19. Light Diffuser Removal
#3758440 - Revision B - November, 2006 7-8
=> Gao (648PRO) Component Access/Removal
LED Accent Lighting (Side Lights) Removal
To access and remove the accent lights:
1. Use a small flat bladed screwdriver to pry accent
light diffuser out of the breaker strip, taking care not
to damage the edges of diffuser or the breaker strip
(See Figure 7-20).
NOTE: On earlier models the side light diffusers Side
were glued in place. In this case, the glue must be | Light
broken loose in order to remove the diffuser. Diffuser
2 Bow the diffuser out, then extract both ends from |
the top and bottom of the breaker strip.
3 With the diffuser removed, use a needle-nose pli- | |
ers, starting at bottom of light strip, to depress the Figure 7-20. Side Light Diffuser Removal
plastic tabs securing light strip to pocket in breaker
strip.
4. Now, pull the light strip past the tabs (See Figure 7-
21). — Г
Control Keypad Interface (Control Panel) Removal | $0]
TI ó
The Control Keypad Interface (AKA Control Panel) is Tab — ol
located on the top front of the refrigerator compartment. = |
To remove the control panel: e
1. Remove the top light diffuser.
2. Disconnect the communication cables from the left Light Strip
rear side of the control panel. (See Figure 7-22) | |
3. Extract screws from the top rear of the control panel | fofo] |
and pull the assembly down and out.. Figure 7-21. LED Light Strip Removal
Upper Refrigerator (Zone 3) Light Assembly Removal!
To remove the upper refrigerator light assembly, the и
control panel must first be removed, then: M
(Not lustrated) a >>
1. Extract the screws at each end of the assembly. |
Lower the light assembly down, and disconnect the NES
wire leads behind the right side. —— — =
3. Now, push the communication cable grommet from a
the hole at the left end and remove the communica- Communication Cables A
tion cables from the hole. \\
Figure 7-22, Control Panel Removal
7-9 #3758440 - Revision B - November, 2006
Component Access/Removal Pro-Series (648PRO)
Upper Refrigerator (Zone 3) Evaporator Cover |
Removal | |
The bottom of the evaporator cover is secured by slots |
in the side flanges that fit over pegs at the bottom of |
each shelf ladder. The top is secured by screws hold- |
ing it to the evaporator fan shroud.
‚ Extract Screws at top, then N
To remove an evaporator cover, the light diffuser must | lean forward and lift up.
be removed first, then (See Figure 7-23): |
|
1. Extract screws from top of evaporator cover. |
2. Tilt cover forward and lift off of locating pegs.
|
|
Upper Refrigerator (Zone 3) Evaporator Fan Shroud | |
Assembly Removal /
The evaporator fan shroud assembly is secured to the | |
ceiling with screws. |
To remove an evaporator fan shroud assembly, the light | |
diffuser and evaporator cover must be removed first, |
then (See Figure 7-24): |
re
1. Extract mounting screws along front flange and Figure 7-23. Zone 3 Evaporator Cover Removal
middle sides of shroud.
2. Lower assembly and disconnect wire harness.
|
|
Upper Refrigerator (Zone 3) Evaporator Fan \ \ 4
Assembly Removal | 1) Electrical Connection |
The fan assembly is secured to the shroud with screws. , a Middle Side
El a Mounting Holes
To remove an evaporator fan assembly, the light dif- | ||
fuser, evaporator cover and fan shroud must be (IHR i -
removed first, then extract the fan assembly mounting AC N 5
screws from the shroud and pull the fan assembly from | |
the shroud (See Figure 7-24):
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Figure 7-24. Zone 3 Fan Shroud Removal
#3758440 - Revision B - November, 2006 7-10
Pro-Series (648PRO)
Component Access/Removal
Upper Refrigerator (Zone 3) Compartment
Thermistor
The upper refrigerator compartment thermistor is locat-
ed behind the evaporator cover, and attached to the
rear wall with a screw.
To remove the compartment thermistor, the light diffuser
and evaporator cover must be removed first, then (See
Figure 7-25):
1. Extract thermistor mounting screw.
2. Cut thermistor’s wire leads six (6) to twelve (12)
inches from the back wall, then pull thermistor from
compartment.
Upper Refrigerator (Zone 3) Evaporator Thermistor
The upper refrigerator evaporator thermistor is inserted
into the third opening from the top in the evaporator fins
left side, and extending approximately to the center of
the evaporator.
To remove the evaporator thermistor, the light diffuser
and evaporator cover must be removed first, then {See
Figure 7-25):
1. Pull thermistor from evaporator fins.
2. Cut thermistor’s wire leads six (6) to twelve (12)
inches from the back wall, then pull thermistor from
compartment.
>
|
}
\
\ VE er CCT? |
N
o
L
Compartment
Thermistor
Evaporator
Thermistor
Um ML MA
PE ARO for orar
TL mi a alar mm a
PPT PL Pr ry pea il o
MO Paper PERE
Figure 7-25. Zone 3 Thermistors
43758440 - Revision B - November, 2006
Component Access/Removal
Pro-Series (648PRO)
Refrigerator Crisper Lid Assembly Removal
To remove the crisper lid assembly (See Figure 7-26):
1. Open top drawer until the slides are fully extended.
2. Pull glass crisper lid forward.
3. Lift front of crisper lid up and out.
Drawer Light and Socket Removal
The drawer lights are located at the top front of each
drawer compartment.
To remove the drawer light or replace the light socket,
the drawer assembly must first be removed, then (See
Figure 7-27):
1. Remove light bulb from socket by turning the light
bulb counterclockwise.
Extract screws from light socket mounting bracket.
Disconnect wire leads from light socket.
The light socket is held in place with retaining clips.
Depress the retaining clips and extract socket from
mounting bracket.
2.
3.
4
Drawer Closer Removal
Drawer closer assemblies are located at the front right
side wall of the drawer compartments, Screws secure
each drawer closer to the wall.
To removal a drawer closer assembly (See Figure 7-
28):
1.
2.
Remove appropriate drawer assembly.
. Extract screws that secure the drawer closer to
side wall.
Drawer Slide Assembly Removal
To remove a drawer slide assembly (See Figure 7-29):
1. Extract drawer slide assembly mounting screws.
2. Pull assembly from side wall.
NOTE: When removing drawer slides and their associ-
ated components, it is important to keep track of their
original location. Failure to do so may lead to mis-
aligned drawers when reinstalled.
43758440 - Revision 8 - November, 2006
2
a
N |
У
/
а
с o
Vo
—
\ 4
N
Figure 7-26. Crisper Lid Assembly
X
a
/
gr
99
FA
“E
SX
| je o
6 | | | Extract Screws
; ||
И
Figure 7-27. Drawer Light Socket Removal
Drawer Closer
Assembly NN
Figure 7-28. Drawer Closer Removal
7-12
Figure 7-29. Carriage Assembiy
Pro-Series (648PRO) Component Access/Removal
Lower Refrigerator (Zone 4) Evaporator Fan Shroud
The lower refrigerator evaporator fan shroud is secured
to the evaporator cover assembly with screws.
To remove the lower evaporator fan shroud, extract its
mounting screws and pull it from the compartment (See
Figure 7-30). ~,, Assembly
Lower Refrigerator (Zone 4) Evaporator Cover
Assembly
T— Switch
The lower refrigerator evaporator cover assembly Enclosure
includes the evaporator fan assembly, and is attached
to the back wall with screws. “th.
Evaporator AD E
To remove the evaporator cover assembly, the left Cover и Su
drawer slide assemblies and fan shroud must be Za I
removed first, then (See Figure 7-30): >
Switch
1. Extract evaporator cover mounting screws.
2. Work the compartment thermistor wires through the
key-hole slot in the left side of the evaporator cover. Figure 7-30.
3. Lean evaporator cover assembly forward and dis- Zone 4 Fan Shroud, Evaporator Cover Assembly and
connect evaporator fan wire leads, then pull assem- Light Switch Assembly
bly from the compartment.
Lower Refrigerator (Zone 4) Evaporator Fan
Assembly
The lower refrigerator evaporator fan assembly is
attached to the evaporator cover with screws.
To remove the evaporator fan assembly, the left drawer
slide assemblies, fan shroud and evaporator cover
assembly must be removed first, then extract evapora-
tor fan assembly mounting screws and pull fan assem-
bly from evaporator cover (See Figure 7-30):
Lower Refrigerator (Zone 4) Light Switch Removal
The light switches for the lower refrigerator zone are
located in the right rear switch enclosure. The enclo-
sure is held to the back wall with screws.
To remove a light switch, the right drawer slide assem-
blies, fan shroud and evaporator cover assembly must
be removed first. Then, (See Figure 7-30):
1. Extract switch enclosure mounting screw.
2. Pull enclosure forward and disconnect switch elec-
trical leads.
3. Depress tabs at back side of switch and push
switch from switch enclosure.
7-13 #3758440 - Revision B - November, 2006
Component Access/Removal
Lower Refrigerator (Zone 4) Compartment
Thermistor
The lower refrigerator compartment thermistor is
attached to the left side wall with screws and tube
clamps.
To remove the compartment thermistor, the left drawer
slide assemblies, fan shroud and evaporator cover
assembly must be removed first, then (See Figure 7-
31):
1. Extract screws and clamps holding thermistor to left
side wall.
2. Cut thermistor’s wire leads six (6) to twelve (12)
inches from the back wall, then pull thermistor from
compartment.
Lower Refrigerator (Zone 4) Evaporator Thermistor
The lower refrigerator evaporator thermistor is inserted
info the third opening from the top in the evaporator fins
left side, and extending approximately to the center of
the evaporator.
To remove a evaporator thermistor, the left drawer slide
assemblies, fan shroud and evaporator cover assembly
must be removed first, then (See Figure 7-31):
1. Pull thermistor from evaporator fins.
2. Cut thermistor's wire leads six (6) to twelve (12)
inches from the back wail, then pull thermistor from
compartment.
#3758440 - Revision B - November, 2006
Pro-Series (648PRO)
В
>
— Evaporator
Compartment По Thermistor
ne
e.
—]
a
\
7-14
Figure 7-31. Zone 4 Thermistors
Pro-Series (648PRO)
Component Access/Removal
Freezer Interior Cosmetic and Mechanical Components
Freezer Shelf Adjustment and/or Removal
To adjust and/or remove a freezer shelf, lift up at front
slightly, then lift back up and out of shelf ladders (See
Figure 7-32).
Light Diffuser Removal
The freezer light diffuser is located at the top of the
compartment. The light diffuser is held in place by C-
shaped clamps fitting over pegs protruding from the
side walls (See Figure 7-33).
To remove the light diffuser, push diffuser toward rear of
unit to disengage C-shaped clamps from the pegs in
the side wall, then lower the diffuser down and puli from
the compartment.
Upper Freezer Light Assembly Removal
To remove the upper freezer light assembly (Not
Hustrated): |
1. Extract the screws at each end of the assembly.
Lower the light assembly down, and disconnect the
wire leads.
3. Now, push the communication cable grommet from
the hole at the left end and remove the communica-
tion cables from the hole.
Upper Freezer Evaporator Duct/Cover
The bottom of the upper freezer duct/cover is secured
by slots in the side flanges that fit over pegs at the bot-
tom of each shelf ladder. The top is secured by screws
holding it to the back wall.
To remove the upper freezer duct/cover, the light dif-
fuser must be removed first, then (See Figure 7-34):
1. Extract screws from top of duct/cover.
2. Tilt duct/cover forward and lift off of locating pegs.
|
|
an
y
Extract Screws at top, then
lean forward and lift up.
7-15
Figure 7-34. Upper Freezer Duct/Cover Removal
#3758440 - Revision B - November, 2006
Component Access/Removal
Freezer Bottom Shelf Assembly Removal
At the bottom of the upper freezer compartment is a
shelf separating the top compartment from the drawer
compartments.
To remove the shelf, lift the front up, then lift the back
off of the locating pegs in the rear side walls of the
compartment. (See Figure 7-35)
Freezer (Zone 1) Compartment Thermistor Removal
The freezer thermistor is located behind the upper
duct/cover and attached to the back wall with a screw
and tube clamp.
To remove the freezer thermistor, the light diffuser and
upper duct/cover must be removed, then (See Figure 7-
36):
1. Extract screw and clamp holding thermistor to back
wall.
2. Cut thermistor's wire leads six (6) to twelve (12)
inches from the back wall, then pull thermistor from
compartment.
Ice Bucket Removal
The ice bucket sits in the bottom freezer drawer.
To remove the ice bucket, open bottom freezer drawer
and lift bucket out of drawer. (See Figure 7-37)
NOTE: When reinstalling the ice bucket, make sure its
rear flange is not sifting up on the back edge of the
drawer. If this happens, the ice level arm will be held in
the up position, stopping ice production.
#3758440 - Revision B - November, 2006
Pro-Series (648PRO)
|
Locating
Pegs
aN
FS=
o_o
ERITH
ei
/
/
\
Figure 7-35. Freezer Bottom Shelf Removal
Freezer
Compartment
Thermistor
7-16
Figure 7-37. Ice Bucket Removal
Pro-Series (648PRO)
Component Access/Removal
Drawer Light and Socket Removal
The drawer lights are located at the top front of each
drawer compartment.
To remove the drawer light or replace the light socket,
the drawer assembly must first be removed, then (See
Figure 7-38:
1. Remove light bulb from socket by turning the light
bulb counterclockwise.
2 Extract screws from light socket mounting bracket.
3. Disconnect wire leads from light socket.
4. The light socket is held in place with retaining clips.
Depress the retaining clips and extract socket from
mounting bracket.
Upper Freezer Evaporator Fan Shroud Removal
The upper freezer evaporator fan shroud is located
under the freezer bottom shelf and is mounted over the
top of the evaporator fan assembly with screws.
To remove the upper freezer evaporator fan shroud,
the freezer bottom shelf must be removed first, then
(See Figure 7-43).
1. Extract screws securing shroud to fan assembly.
2. Lift fan shroud out of unit.
Lower Freezer Evaporator Fan Shroud Removal
The lower freezer evaporator fan shroud is located
under the freezer bottom shelf, and is mounted in front
of the evaporator fan assembly with screws.
To remove the lower freezer evaporator fan shroud,
the freezer bottom shelf must be removed first, then
(See Figure 7-43):
1. Extract screws securing shroud to fan assembly.
2. Tilt top of shroud down, then lift shroud out of unit.
Freezer Evaporator Fan Assembly Removal
The freezer evaporator fan assembly is located behind
the freezer evaporator fan shrouds.
To remove the freezer evaporator fan assembly, the
freezer bottom shelf and both fan shrouds must be
removed first, then (See Figure 7-44):
1. Disconnect wire leads from fan assembly.
2. Extract fan assembly mounting screws.
3. Lift assembly from the compartment.
Ñ
x %
{
e
|
\
Extract Screws
||
Figure 7-38. Drawer Light Socket Removal
Fan Assembly
„Ен
La
E
Y
A
N= aa À
= a
D
y
|
/
A il
/ Ш |
ТГ
(
©]
Ne
E]
А
A
7-17
Figure 7-44. Freezer Evaporator Fan Assembiy
#3758440 - Revision B - November, 2006
Component Access/Removal Pro-Series (648PRO)
Icemaker Assembly Removal Screws
The icemaker is located behind the bottom freezer 7 \ 7
drawer, mounted on a plate that is attached to the back о
wall. | o
To remove ice maker the freezer drawers must be |
removed first, then (See Figure 7-45): | 1%
1. Extract icemaker mounting screws from below and | CCC
above ice maker. |
2. Pull ice maker forward and disconnect icemaker 7 >—,
electrical leads. x te
3. Pull icemaker forward, out of the compartment. : = rd
Co = 7
DZ DD DD o И
cr KT Co} с
O; 7 = Се E —
Freezer Evaporator Cover Removal SI E
Sos
The freezer evaporator cover is located behind the top o
freezer drawer compartment. Screw
To remove the freezer evaporator cover, the freezer -
bottom shelf needs to be removed first, then (See Figure 7-45. icemaker Removal
Figure 7-46):
1. Extract evaporator cover mounting screws.
2. Pull cover forward and out of compartment. ®
Freezer Evaporator
Cover
Freezer Evaporator Thermistor Removal
The freezer evaporator thermistor is inserted into the
third opening from the top in the evaporator fins left
side, and extending approximately to the center of the e
evaporator.
To remove the evaporator thermistor (See Figure 7-47): I //
1. Pull thermistor from evaporator fins.
Cut thermistor’s wire leads six (6) to twelve (12)
inches from the back wall, then pull thermistor from
Figure 7-46. Evaporator Cover Removal
compartment. | | |
o D @\
Freezer Defrost Terminator Removal
. . . Defrost Terminator
The freezer defrost terminator sits on the tubing at the
upper left hand side of the evaporator.
E
. . DE |
To remove the defrost terminator (See Figure 7-47): | = me: i Tr AR a
. . , DENT A | |
1. Disconnect the terminator clip from the evaporator Gi И ea aa
tubi ng. I WM La | Л НЫ
2. Cut the cable ties at the back wall nn.
3. Disconnect terminator electrical leads, then pull the | En i pe ; i, I
. [TART ETE TERE TTT CII + CTE ih tir Л В
terminator from the freezer compartment. | TN ON HEUT ie
| l/r FEAR
Evaporator Thermistor
Figure 7-47. Freezer Evaporator Thermistor &
Defrost Terminator
#3758440 - Revision B - November, 2006 7-18
Pro-Series (64aPRO) Component Access/Removal
Freezer Defrost Heater Removal
The freezer defrost heater is located under the freezer
evaporator, and is held in place by a heater bracket that
is screwed to the back wall.
To remove the freezer defrost heater (See Figure 7-48):
4. Cut heater electrical leads at wiring junction points.
2. Extract heater bracket mounting screws.
3 Lift defrost heater from freezer compartment.
Freezer Drain Trough Heater Removal
The drain trough heater is located at the bottom rear of
the freezer compartment, behind the lower freezer
evaporator cover assembly.
To remove the drain trough heater, access the drain
trough heater the freezer drawers and the icemaker
assembly must be removed first, then (See Figure 7-
49):
1. Cut heater wire leads at their junction points
2. Extract heater bracket mounting screws.
3. Lift drain trough heater from the freezer compart-
ment.
un
COTE LE
dut
an
|
Figure 7-48. Freezer Defrost Heater Removal
\ /
Drain — Heater Loop ZU
Figure 7-49. Drain Trough —
7-19 #3758440 - Revision B - November, 2006
Component Access/Removal Pro-Series (648PRO) Peue-zenod
Compressor Area Mechanical Components
Water Filter Removal
The water filter is located behind the grille assembly.
To remove the water filter;
1. Lift Louvered section of grille assembly up
2. Rotate filter counterclockwise to remove it (See
Figure 7-50); clockwise to install it.
NOTE: The water filter timer will reset to a one year
countdown when the filter is replaced. If the water filter
was removed only to service other components, press
the filter switch five times within five seconds to allow
the filter timer to continue the original countdown. A
beep will be emitted indicating the original countdown Figure 7-50. Water Filter Removal
has been resumed.
Water Valve Removal
The water valve is attached to the back side of the Co Water Valve | Electrical
. . | :
water valve bracket, located behind the grille assembly. > Connection
NOTE: Before continuing, disconnect or switch off
water supply. Screws —
To remove the water valve (See Figure 7-51):
Lift Louvered section of grille assembly up. Ч — Water
ater | =
Rotate water filter counterclockwise to remove it Connection © Connection
Extract mounting screws from mounting bracket. _ TT
Disconnect wire leads from valve. | =
Disconnect water lines from valve. |
Extract mounting screws from valve mounting
bracket.
DPARWNA
Figure 7-51. Water Valve Removal (Rear View)
Condenser Fan Removal
The condenser fan is mounted to the condenser fan
shroud with three (3) fan brackets that hook into grom-
meted holes in the fan shroud. Screws passing through
these brackets secure the fan motor to the brackets. и Screws (3)
To remove the condenser fan (See Figure 7-52);
7
1. Disconnect electrical leads from fan motor. й Bracket (3)
2. Extract screws securing motor to brackets. Silencer —.— »
NOTE: Brackets will unhook from grommeted holes in Fan Blade DD
condenser fan shroud after screws are removed.
3. To remove fan blade from fan motor:
L A
a. Grab blade and motor while turning nut coun- Condenser Fan shroud
terclockwise.
b. Pull blade from the motor shaft. Figure 7-52. Condenser Fan Removal (Top View)
#3758440 - Revision B - November, 2006 7-20
Deus-zanod Pro-Series (648PRO) Component Access/Removal
Sealed System Components
NOTE: When entering the sealed system, always —
use solder-on process valves. Do NOT use bolt-on OR
process valves as they are prone {o leak.
NOTE: Whenever servicing the sealed system, the Cut Here
high-side filter-drier must be replaced.
Freezer High-Side Filter-Drier Removal High-Side
Filter-Drier
To remove the freezer high-side filter-drier, first captur-
ing the refrigerant from sealed system, then (See
Figure 7-53):
1. With a file, score a fine around capillary tube 1” or cut H
less from drier outlet, then fatigue capillary tube at ut Here
this line until it separates.
2 With a tube-cutter, cut inlet tube 1” or less from
drier inlet.
Figure 7-53. Freezer Filter-Drier Removal
NOTE: It is not recommended to sweat tubing apart.
Doing so will induce moisture into the sealed system.
NOTE: After capillary tube separates, check tubing for
internal burrs. If burrs exist, repeat step 1 above.
NOTE: When installing replacement filter-drier, insert
capillary tube until it touches screen inside drier, then
pull capillary tube away from screen approximately 3/8" К 3/8”
before brazing. (See Figure 7-54). a | (9.5 mm)
NOTE: Filter-drier outlet must be facing downward in 7
order to function properly.
Refrigerator High-Side Filter-Drier/Refrigerant Valve
Assembly Removal
To remove the refrigerator drier/valve assembly, first
capturing the refrigerant from sealed system, then (See
Figure 7-55): | ) И
1. With a file, score a line around capillary tubes 1” or
less from drier/valve outiet tubes, then fatigue capil-
lary tubes at these lines until they separate.
2. With a tube-cutter, cut inlet tube 1” or less from | |
drier inlet. И |
Cut Here
Cut Here
NOTE: It is not recommended to sweat tubing apart.
Doing so will induce moisture into the sealed system. High-Side
Filter-Drier
NOTE: After capillary tube separates, check tubing for
internal burrs. If burrs exist, repeat step 1 above.
Figure 7-55. Refrigerator Drier / Valve Assembly
7-21 #3758440 - Revision B - November, 2006
Component Access/Removal
Pro-Series (648PRO)
Compressor Removal
Compressors are secured to the top of the unit with
nuts over stud-bolts. The left compressor is the freezer
compressor, the right compressor is the refrigerator
compressor.
NOTE: When replacing a compressor, the high-side fil-
ter-drier must also be replaced.
After capturing the refrigerant from sealed system, (See
Figure 7-56):
1. Disconnect electricals from compressor.
2. Extract nuts from stud-bolts at each corner of com-
pressor base.
3. Lift compressor up and pull forward to gain access
to suction and discharge lines.
=== А
Na Cut Here
4. Using a tube cutter, cut suction and discharge lines
approximately 1” from compressor.
NOTE: itis not recommended to sweat tubing apart.
Doing so will induce moisture into the sealed system.
Figure 7-56. Compressor Top View
Condenser Removal
NOTE: When replacing the condenser, both high-side
filter-driers must also be replaced.
To remove the condenser the unit shroud will need to
be removed first, then after capturing the refrigerant
from sealed system, (See Figure 7-57):
1. From control board side of condenser, extract
screws which hold condenser side brackets to con-
denser.
2. Cut cable-ties holding thermistors to condenser out-
let tubes.
3. Using a tube cutter, cut condenser inlet and outlet
tubes.
NOTE: It is not recommended to sweat tubing apart.
Cut Tubes
Doing so will induce moisture into the sealed system.
4. Lift condenser off of unit.
#3758440 - Revision B - November, 2006 7-22
Figure 7-57. Condenser Removal
beuezanod Pro-Series (648PRO) Component Access/Removal
Evaporator Removal
Evaporators are attached to rear walls of the compart-
ments with screws, behind evaporator covers which
must be removed first.
NOTE: When replacing an evaporator, the high-side fil-
ter-drier must also be replaced.
NOTE: When removing a freezer evaporator, the evap-
orator thermistor, defrost terminator and defrost heater
must also be removed and reused on new evaporator.
After capturing the refrigerant from the sealed system
(See Figure 7-58):
1. Extract screws which hold evaporator to rear wall
of compartment.
2. Pull and rotate evaporator so heat exchanger is Figure 7-58. Refrigerator Evaporator
accessible. NOTE: Freezer evaporator removal not illustrated.
3. With a file, score a line around capillary tube, 1” or
less from evaporator inlet, then fatigue capillary
tube at this line until it separates.
4. With a tube-cutter, cut evaporator outlet 1” or less
from accumulator (if applicable), or 1" or less from
suction line connection point.
NOTE: It is not recommended to sweat tubing apart.
Doing so will induce moisture into the sealed system.
NOTE: After capillary tube is fatigue until it separates,
check tubing for internal burrs. If burrs exist, repeat
step 3 above.
7-23 #3758440 - Revision B - November, 2006
Component Access/Removal Pro-Series (648PRO)
Heat Exchanger VE
NOTE: When replacing a heat exchanger, the high- ee Cut Here
side filter-drier must also be replaced. || | OS
To remove the heat exchanger the top cover and evap- | ‚ No TS
orator cover must be removed, then after capturing the
refrigerant from the sealed system (See Figures 7-59):
1. Extract screws which hold evaporator.
2. Remove insulation from heat exchanger.
3. With a file, score a line around capillary tube, 1" or
less from evaporator inlet, then fatigue capillary
tube at this line until it separates.
With a tube-cutter, cut evaporator outlet 1” or less
from accumulator (if applicable), or 1” or less from
suction line connection point.
5. With a tin snips, or similar tool, cut heat exchanger
in compartment as close as possible to wall or ceil-
ing where heat exchanger passes through.
In upper compressor area, use a tube-cutter to cut
drier from condenser.
7. Extract nuts from stud-bolts at each corner of com- Figure 7-59. Heat Exchanger
pressor base.
Lift compressor up and pull forward to gain access
to suction line.
8. Using a tube cutter, cut suction line approximately
1" from compressor.
9. Pull remaining heat exchanger from unit.
>
©
o
NOTE: It is not recommended to sweat tubing apart.
Doing so will induce moisture into the sealed system.
NOTE: When replacing the heat exchanger, it is recom-
mended to attach it at the evaporator end first, then
feed the heat exchanger through hole, up to compres-
sor area.
#3758440 - Revision B - November, 2006 7-24
Pro-Series (648PRO) Component Access/Removal
Drain Pan Heater Loop Removal
The drain pan heater loop is located on the underside
of the bottom panel of unit and above the drain pan.
NOTE: When replacing a condensate heater foop, the
filter-drier must also be replaced.
NOTE: It is recommended that a suction line drier be
added to the sealed system when replacing the con-
densate heater loop.
To remove the drain pan heater loop, the drain pan
must be removed first, then after capturing the refriger-
ant from sealed system, (See Figure 7-60):
1. Using a tube cutter, cut condensate loop inlet and
outlet.
NOTE: It is not recommended fo sweat tubing apart.
Doing so will induce moisture info the sealed system.
2. Extract tubing from heater loop brackets.
Figure 7-59. Drain Pan Heater Loop Removal
7-25 #3758440 - Revision B - November, 2006
Component Access/Removal Pro-Series (648PRO)
43758440 - Revision B - November, 2006 7-26
peus-zenod Pro-Series (648PRO) Troubleshooting
SECTION 8
TROUBLESHOOTING
GUIDES
Troubleshooting Pro-Series (648PRO) Peue-zenod
SERVICE MODE (Troubleshooting Input Operations)
The service features in this electronic control system allow the technician to perform a series of key strokes at the
control panel in order to verify, configure, query and troubleshoot the appliance and its electronic control system.
These service features are activated while in the four sub-modes of the Service Mode.
The four sub-modes of the Service Mode are:
1) Diagnostics Mode
2) Operational Status Mode
3) Model Information Mode
4) Version Information Mode.
The technicians display, located behind the top grille assembly, utilizes a two (2) line X sixteen (16) character LCD.
While in Service Mode, this display will indicate which sub-mode is active, the data being searched for, and what
other data can be accessed. When not in the Service mode, the Technician's display will indicate system informa-
tion as defined for each particular operational mode.
Basic instructions for working
through the Service Mode menu
can be found on the Technician's For Service Mode, Press and hold| COLDER [then press} POWER
Display cover (See Figure 8-1).
These basic instructions (the Key ———— — Pro48 Zones
SERLIICE [TUE [ENTRAMOS TILS
Symbol and Arrows), correspond 11 DIACNOSTICS —> 1 SELF TEST >
with keys on the control panel, | >) 29999 UISTORY ->
thus directing the technician as to — 31 THERMISTORS ->
Sex ICC MODE 1 3
what keys need be pressed in > 09 STATILS > di ACTIVE SUE >
order to move in the direction | >} STATISTICS >
indicated by the arrow closest to SERVICE MODE
each key symbol. 31 MODEL INFO >| For complete Service
NOTES: | Моде menu see back 1 4
. SERUTOS MODS of wiring diagram.
* A complete Service Mode Sr LESS TON INFO —>
Menu can be found on the back —
of the wiring diagram and on
the next page of this manual. 4
* Since it is possible to initiate,
bypass, an/or step back
through the four different sub- >
modes while in Service Mode,
initiating Service Mode will =
always be the first step when
explaining how to work through
the Service Mode menu for the
sub-modes.
[cover] <b
CAUTION
The grille is connected with a
low-voltage display cable behind
this cover. It MUST be disconnected
before grille is removed.
3758484 B
Figure 8-1. Technician’s Display with Service Mode Menu
#3758440 - Revision B - November, 2006 8-2
sus-zero | Pro-Series (648PRO)
Troubieshooting
Non-Service Mode Display Information
Prior to initiating Service Mode, the following information will appear on the Technician’s Display, depending on oper-
ational mode.
1) Model Name
2) Zone #1 Status
3) Zone #2 Status
4) Zone #3 Status
5) Zone #4 Status
Operational Mode LCD Line #1 LCD Line #2
Power Up Scrolling Messages (every 2s) Scrolling Messages (every 2s)
1) Model ID # 1) Unit ID #
2) Main Software Version # 2) EZ2 Version #
3) Left Display Version # 3) Right Display Version #
4) Keyboard Version # 4) Tech Display Version #
Off
Showroom Sub Zero Showroom mode
Sabbath Sub Zero Sabbath mode
Normal Scrolling Messages (every 2s) Scrolling Messages (every 2s)
1) S/N: XXXXX
2) Status
3) Status
4) Status
5) Status
Initiating Service Mode
To initiate Service Mode, press and hold any COLDER key, then press the POWER key, then release both keys
(See Figure 8-2). “Service Mode, 1) Diagnostics” is the first sub-mode to appear in the Technician's Display, with a
small arrow in the bottom right corner pointing right.
NOTES:
* By following the basic directions on the Technicians Display cover and the prompts that appear in the Technician's
Display, a Service Technician will be able to work through the Service Mode menu, to the desired verification point,
configuration portion, and troubleshooting section of the menu.
* For sake of space, the directions that follow will
not explain or show what is seen in the display
añer each key stroke. Only the final, and/or
desired result will be explained and illustrated.
* There are three (3) ways to exit Service Mode: ICE MAKER
1. To exit the Service Mode at any time, press
the ICE MAKER key repeatedly until com- <a
pletely out of Service Mode menu.
2. Pressing the POWER key will switch the
unit OFF and exit Service Mode.
3. If no keys are pressed for five (5) minutes
after initiating Service Mode, the electronic
control will automatically exit the mode.
[WARNER] 4»
TICS
ALARM
ICE MAKER À
coupes | | warmer| [eos | |
| LIGHT
="
==
WARMER |
Figure 8-2. Key Strokes and Tech Display - Initiate Service Mode
8-3
#3758440 - Revision B - November, 2006
Troubleshooting
Pro-Series (648PRO)
Service Mode Menu
To initiate the Service
Mode, press and hold
COLDER then
To exit, press ICE
MAKER repeatedly
until you are out.
To work through sub-modes,
press ALARM, ICE MAKER,
WARMER, or COLDER as
indicated by arrows in flowchart.
Service Mode <«Diagnostics
1)Diagnostics > 1)Self Test >
А
Start? >
<Self Test
Results >
<Diagnostics
Z\ErrorHistory >
<ErrarHistory
1\View History =
<Self Test
Active
<Seif Test Data
Board OK
Error 1: 35 000
12245 d 21:32:45
mor £:
12345 а 10:29:01
Error 3: 34 300
12345d 8:15:45
| Error 4: None |
Continue for 20 errors
Zone #2 (deg F}
NotPresent
one #3 (dé
Evp51 Cab
—%
Zone #4 (deg F)
Evp 51 Cab 18
18
<ErrorHistory <ClearHistory |
2)ClearHistory > No? >
earHistory
Yes? >
—
«Diagnostics | | Ambient (deg F) |
3)Thernistors > 70
К +
Condensers (F}
Lt 143 Rt 141
| Zone #1 (deg F) |
Evp51 Cab 18
<Diagnostics <Manual Zone
4Activate Zone> Zone #1, start?
5—
Manual Zone: Z1 |
Evp 51 Cab 18
<Manuat Zone
Zone #2 start?
Manual Zone: 22 |
Evp51 Cab 18
<Manual Zone
Zone #3, start?
<Manual Zona
Zone #4, start?
<Diagnostics
b)Statistics >
"
Service Mode
20p Status >
<Op Status
Zone Status >
Z21:+Cooling
-Def
_
ol Fresan
+
Z3:+ Cooling
-Def
<OpStatus
2)lce Maker >
X
ce Maker Status
Harvest
Service Mode «Model PRO48
3)Model Info > Change Modet? >
Y KE
4Wersion Info >
Y
e ersión into
Manual Zone: Z3
Eyvp51 Cab 18
Evp 5% Cab 18
<Select Model
PRO48 >
ь
Accept New Model
<Select Modei
PRO48G >
Accept New Model |
No? >
Continuefornumber
of models defined
#3758440 - Revision B - November, 2006
Control:01.3.3
+
varsion info
Hv Mero:02.2.0
«Version info
ЕЕСоп!:01. 1.1
|
«Version info
LILCO:01.2.0
+
Mars ion info
RiLCD:01.2.0
Version info
Logger: 02.2.4
Version info
Ke dd: unknown
«Version info
SiN: MO000000
8-4
*
Accapt New Model |
Yas? >
Pro-Series (648PRO) Troubleshooting
Error Code Table
CODE | ZONE | SERVICE INSTRUCTION
01 X Zone “X” Cabinet Thermistor Failure (Device or Wiring)
02 X Zone “X” Evaporator Thermistor Failure (Device or Wiring)
03 X Zone “X” Condenser Thermistor Failure (Device or Wiring)
04 0 Ambient Thermistor Failure (Device or Wiring) a
20 X Check Zone “X” Defrost Bi-metal for Proper Operation
21 X Check Zone “X” Defrost Bi-metal for Proper Operation
22 X Check Zone “X” Defrost Wiring
23 X Check Zone “X” Defrost Wiring
24 X Check Zone “X” Defrost Heater Ohms
30 0 Check for Stuck Icemaker or Water Valve Failure
35 X Check Zone “X” Fan, Fan Speed Error
40 X Zone "X” Excessive Run
41 X Check Zone “X” Compressor and Wiring
42 0 Check Condenser Fan and/or Wiring
43 X Check Left Refrigerant Valve and Wiring
44 X Check Zone “X" Glass Door Heater and Wiring
45 X Errors Detectable with Red Door Switches-Disabled Now. Check Overhead Lighting
46 0 Check Ice Accessory Wiring for Open Circuit
47 3 Check Accent Lighting Wiring for Short Circuit
80 X Check Power to Compressor Controller for Zone “X”, Troubleshoot with Manual Activation Mode
83 X Replace Zone “X” VS Compressor and Filter-Drier
84 X Check Zone “X” VS Compressor Wiring
35 X Zone “X” VS Compressor Control Overheat
86 X Check Communication Wiring, Replace Zone “X” VS Controller
87 X Check for Broken Wiring or Open Defrost Heater
89 X Check Icemaker Solenoid Valve and Wiring
90 X Change Main Control Board
92 0 Check Keypad Wiring
93 0 Replace Keypad
94 1__ | Check Wiring / Replace User Display #1
94 3 Check Wiring / Replace User Display #2
96 0 Datalogger Malfunction
97 0 Check Communications Cables / Connectors
98 0 Brownout Check Input Power Supply
8-5 #3758440 - Revision B - November, 2006
Troubleshooting Pro-Series (648PRO)
SEALED SYSTEM DIAGNOSTICS TABLES
NORMAL OPERATING PRESSURES TABLE NOTES:
+ Only enter the sealed system to check pressures if the cause of the temperature problem could not identified with
the appliance in Service Mode.
« Always use solder-on process valves when entering the sealed system. Do NOT use bolt-on process valves as
they are prone to leak.
Whenever servicing the sealed system, the high-side filter-drier MUST be replaced.
Pressures listed below are not indicative of initial pull down, but rather of a steadily running and properly function-
ing appliance.
« Pressures listed are for reference only, as actual pressure readings may vary because of one or more of the fol-
lowing reasons:
1. Ambient temperatures (Pressures are based on a 70°F (21°C) Ambient).
2. Temperature set-points {Pressures listed below are based on set-points of 0°F (-18°C} in freezers and 38°F
(3°C) in refrigerators)
Food load quantity and temperature.
Condenser cleanliness.
Whether or not one or both refrigeration systems are operating.
Gauge calibration.
pos
NORMAL OPERATING PRESSURES
Model Normal Low-Side Pressures | Normal High-Side Pressures
Refrigerator 0 - 12 psi to 30 - 42 psi 75 psi to 110 psi
648PRO
Freezer 5” Vac - 1 psi to 6 - 12 psi 75 psi to 120 psi
PRESSURE INDICATIONS
If low-side pressure is & high-side pressure is possible problem is
NORMAL NORMAL MECHANICAL
(see General Troubleshooting Guide)
LOW LOW LEAK
LOW HIGH RESTRICTION
HIGH LOW INEFFICIENT COMPRESSOR
HIGH HIGH OVER CHARGE
#3758440 - Revision B - November, 2006 8-6
beuszerod Pro-Series (648PRO) Troubleshooting
EVAPORATOR TEMPERATURE / SEALED SYSTEM LOW-SIDE PRESSURE CORRELATION
NOTE: The temperature/pressure table at right is for
reference only. A unit's temperature/pressure correla- Temperature § Pressure
tion may differ from those listed due to: variations in -30°F (-34°C) 10” Vac
evaporator thermistor location, set-points, where the -25°F (-32°C) 7" Vac
sealed system is in the refrigeration cycle, ambient tem- -20°F (-29°C) 4" Vac
perature, efc. N -15°F (-26°C) 0” Vac
If a unit is experiencing temperature problems, it is rec- -10°F (-23°C) 2 Psi
ommended that you initiate Service Mode and interpret -5°F (-21°C) 4 Psi
the information therein before accessing the sealed sys- O*F (-18°C) 7 Psi
tem. After all mechanical and electrical components 5°F (-15°C) 9 Ps;
have been ruled out, sealed system pressures can be 10°F (-12°С) 12 Psi
checked by applying solder-on process valves and ref- 15°F (-9°C) 15 Psi
erencing the preceding page. Do NOT use bolt-on 20°F (-7°C) 18 Psi
process valves as they are prone to leak. 25°F (-4°C) 29 Psi
This table should only be used as a last quick check 30°F (-1°C) 26 Psi
before entering the sealed system, 35°F (2°C) 30 Psi
40°F (4°C) 35 Psi
45°F (7°C) 40 Psi
50°F (10°C) 45 Psi
55°F (13°C) 51 Psi
60°F (16°C) 57 Psi
65°F (18°C) 64 Psi
70°F (21°C) 71 Psi
75°F (24°C) 78 Psi
8-7 #3758440 - Revision B - November, 2006
Troubleshooting Pro-Series (648PRO) Peue-zenod
43758440 - Revision B - November, 2006 8-8
beus-zenod Pro-Series (648PRO) Technical Data
SECTION 9
TECHNICAL DATA
9-1
#3758440 - Revision B - November, 2006
Technical Data
Pro-Series (648PRO) Faus-zerod
Model 648PRO
REFRIGERATOR
FREEZER
CHARGE (R-134a Refrigerant)
NOTE: Always check serial tag for exact charge
4.0 07.
6.0 oz.
NORMAL OPERATING PRESSURES
Low Side
High Side
0 - 12 psi to 30 - 42 psi
75 psi to 110 psi
5” Vac-1 psi to 6-12 psi
75 psi to 120 psi
COMPRESSOR
NOTE: Always check parts price list for possible substitutions.
Service Part No.
Manufacturer
Mig. Part No.
Original Compressor / Service Compressor Amps
Original Compressor / Service Compressor BTU's
4201880
Embraco
EMI3OHER
2.1(V), 0.8 (non-V3 / 1.1
864(V), 345(non-V) / 280
4204741
Embraco
VEGY
26/26
1070 / 1070
DEFROST METHOD
“Fan Assisted Off
Cycle Defrost”
Evap > 38°F before
Compressor ON.
“Adaptive Defrost”
Intervals and duration
varies. Followed by 5
min. compressor delay.
DEFROST TERMINATOR Cut-In Temp. — 30°F / -1°C
Cut-Out Temp. — 55°F 1 13°C
DEFROST HEATER Watts —— 450
Amps —— 3.75
Ohms — ~ 32
DRAIN TROUGH HEATER Watts — 80
Amps — 66
Ohms — ~ 180
FILL TUBE HEATER Watts m= 4.2
Amps — .04
Ohms u. 3000 - 3500
WATER VALVE Watts — 50
Amps —— 4
Ohms (inductive) ---- - 288
THERMISTORS
(Evap & Compartment) Ohms at 32°F / 0°C
30000 - 33000
30000 - 33000
GLASS REFRIGERATOR DOOR HEATER Watts
Amps
Ohms
5 @ 12VDC
4
~ 29
#3758440 - Revision B - November, 2006
Leus-z=rod Pro-Series (648PRO) Wiring Diagrams/Schematics
SECTION 10
WIRING DIAGRAMS
AND SCHEMATICS
Wiring Diagrams/Schematics Pro-Series (648PRO)
WIRING DIAGRAM A WARNING
“This wir information «à provided for use by qualified
SCH peronnal caby
= -Descrinect applianos fram elachical supply before
Daginning service
nu «Ва sure all grounding davies: ang connected whan
BErvICo ¡E Crew,
-Fañura obaarrs the above warnings may resuh in
(HIGH VOLTAGE) Ес
- LA
WATER FILTER Sw . REFRIGERATOR
FR SUPPLY COMPRESSOR
CORD
E = 5 STARTING RELAY
N + > E A
E Are | i
IZEMARER q ||
WATER VALVE |
|| | :
sls |
AE
+ HINGE 3WITCH
|
| | TOP ACCENT LIGHT
DEFROST
HEATER
|
|
|
|
|
|
|
| i
| |
FIiLL TUBE |
| HEATER |
El r
e =u Ë
8 | u :
| e | H |
| Li Boh a |
— y a НЕ |
= HAN CH e |
| ZONE 1 3 e | zones | || ||
| LAU oe LL LL Ш —— |
] WHITE ST ; mas eee —_—
| Е ОН
UPR DRAWER LIGHT e | |
————] ; - | В |
а lil]. =| | Sl
| | |
ee PL... À L 111 LA LL LL 0Œ… PL aa À | races |.
e 1 y — LT db 0
bf, wm vores || | PeWITCHES |"
| re 3, | | SWITCHES | | | |
| | LR DRAYWER LHSHT i ! ’
|| умны» | |
E Ho ; |
| _ e Lo
HIGH VOLTAGE 1
|
#3758440 - Revision B - November, 2006 10-2
Pro-Series (648PR0) Wiring Diagrams/Schematics
WIRING DIAGRAM — wanna
MODELS: PRO48 ЕЕ ттт
“This wiring Wiormation is provided for use by qualified
Service ke competa
Fale lo haar tha shove wamings may ras br
(LOW VOLTAGE) remanso:
NEAR SENSOR END)
=
SENSOR (FRE CONDI | aiwET CABLE
т НН rr r———
i SENSOR JACKET CABLE (MARK |
AMBENT) yy(TH 1 BLUE STRIPE
EAR SENSOR END) |
UFFER REF EVAF FAN [
‘ |
| |
JACKET CABLE [MARE WITH 2 BLUE |
STAIFS NEAR SENSOR END) _)
O J
| CF SENSOR JACKET CALLE {MARK
SENSOR JACKET LE (MARK (REF EVAF] WITH pr SHIPS
[FRE ЕМАР) "WITH 2 GREEN STRIPS HEAR SOR |
EAR 8 END) |
SENSOR |
[FRE CAB) j Cu
5 SENSOR JACKET CABLE
(REF CAB) WITH 1 BRCWN STRIFE
HEAR SENSOR END;
|
JACKET CABLE (MARK
SENSOR
REFCONO; YH STHIPE
BLUEBLACK
PUE: HT
| —1 DOOR
— HEATER
SIDE kEC
SIDE LEE
TELA
[ЕН-
FRE EVAP Fak MOTOR
|
|
(IN HINGE) |
E
Ё
Ï
LOW VOLTAGE o
10-3 #3758440 - Revision B - November, 2006
Wiring Diagrams/Schematics Pro-Series (648PRO)
WIRING SCHEMATIC _ 4h WARNING
BENVICE personnel cn.
MODELS: PRO48 sort
servie 18 complete —
Fosure to chearre tha: Slows wimings Tay resull in
Sea geectrical shook,
Li 115 VOLTS
60 CYCLES
WATER FILTER Sw
AWECO REF VALVE 2
WATER VALVE
IM
M CONDENSER FAN MOTOR
Hi MÉTAL LIGNE +1
2300-2900 £ FILL-TUBE HEATER
DEF HEATER 1
Tn 1
BI-METAL 1 TROUGH HEATER 1
VEPEED
CONTROL
BOX FZ
LT. BLUE
COMPRESSOR
+ RELAY YSPEED
(SOLID DOOR) CONTROL
BOX REF
(GLASS DOOR)
LOW VOLTAGE
—
THERMISTER 4
THERRESTER
MAIN
CONTROL
BOARD
EVAPORATOR FAN TOME 4
EVAPORATOR FAM TUNE 3
m N Cargy [ea
=
#3758440 - Revision B - November, 2006 10-4
sus-zero / Pro-Series (648PRO) Wiring Diagrams/Schematics
MODEL 648PRO CONTROL BOARD LAYOUT
EVAP 12 VDC POWER GROUND RETURN
ZONE 1 SPEED SIGNAL ————— | ——— EVAP FAN POWER 12 VDC
ZONE 4 TACHOMETER UNUSED
ZONE 3 TACHOMETER ZONE 4 SPEED SIGNAL
UNUSED —— — ZONE 3 SPEED SIGNAL
ZONE 1 FAN TACHOMETER = UNUSED
= | | Or NETWORK
fi Г у Pit
D
D PS
P14 I= LEFT DEFROST HTR
a
a
a P49 || RIGHT DEFROST HTR
o
ps [| LEFT COMPRESSOR
P17 Г RIGHT COMPRESSOR
MAIN
CONTROL
ZONE + EVAP SENSOR P16 [| MAIN LIGHTS
ZONE 1 CABINET SENSOR —] BOARD
ZONE 4 EVAP SENSOR —_ |
ZONE 3 EVAP SENSOR -—.
ZONE 4 CABINET SENSOR — P15 LI 11
ZONE 3 CABINET SENSOR ——
RIGHT CONDENSOR —
LEFT CONDENSOR — |
AMBIENT -—1
p1 [| GND
JL P13 [| NEUTRAL
FRONT OF 2 P12 5
UNIT SELL, [email protected]!
[.—.— WATER VALVE INPUT
REFRIGERANT VALVE ZONE 4 DRAWER INPUT
CONDENSER FÁN ————————n— ———— ZONE 3 DOOR INPUT
ICEMAKER L—. ZONE 1 DRAWER INPUT
ICE ACCESSORIES ZONE 1 DOOR INPUT
WATER FILTER INPUT
ZONE 1 DEFROST BI-METAL INPUT
MODEL 648PRO CONTROL BOARD SUMMARY TABLE
PRP de 5
— — lNuseD TC
me. CONDENSER FAN __…
en. | POWERS AWECO VALVE 2
UNUSED
UMUSED | .. ee es’.
648PRO CONTROL BOARD SUMMARY и „то UNED TT
10-5 #3758440 - Revision B - November, 2006
Wiring Diagrams/Schematics Pro-Series (648PRO) Paua-zanod
#3758440 - Revision B - November, 2006 10-6

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