Viking VDSC367, FDSB5421, VCSB5421, FDSB5481 Service Notebook

Service Manual

This manual is to be used by qualied appliance technicians only. Viking does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualied person.

Built-In Side by Side Non-Dispenser

®

Preferred Service

This Base Manual covers general and

specic information including, but not

limited to the following models:

Refrigerator / Freezer

FDSB5421

FDSB5481 VCSB5421 VCSB5481

SMR-0020

MAY 2012

Table of Contents

Important Information 3

Safety Information .................................................... 3

Warnings .................................................................. 4

Electrical Requirements ........................................ 4

Tip Over Hazard .................................................... 4

General Information 5

Model - Serial Number Matrix .................................. 5

Operation 6

Settings and Functions ............................................ 6

Electronic Temperature Settings ........................... 6

Key Press Conrmation ........................................ 6

Fast Cool .............................................................. 7

MAX FRZ .............................................................. 7

MAX REF .............................................................. 7

Forced Pull-Down (Forced compressor start) ....... 8

Forced Defrost ...................................................... 8

Showroom Mode .................................................. 9

Sabbath Mode ...................................................... 9

Fahrenheit to Celsius ............................................... 9

Display Panel Operation ........................................ 10

Temperature Control Operation .............................11

Disassembly 12

Parts Location–Control Panel ................................ 12

Upper Grille Assembly ........................................ 13

Control Panel ..................................................... 13

Control Panel (continued) .................................. 14

Overlay Switch .................................................... 14

Overlay Switch (continued) ................................. 15

High Voltage Board ............................................ 15

Low Voltage Board ............................................. 15

Power Disconnect Switch ................................... 16

Inverter ................................................................ 16

Inverter (continued) ............................................ 17

Condenser Fan ................................................... 17

Parts Location–Refrigerator Compartment ............ 18

Light Assembly .................................................... 19

Fresh Food Fan Assembly .................................. 19

Interior Lights ...................................................... 20

Plasma Cluster™ ................................................ 20

Parts Location–Freezer Compartment and Lower

Unit–Non Dispenser ............................................... 21

Ice Maker (shown here with cover off) ................ 22

Thermal Cut Out (TCO) ...................................... 25

Freezer Evaporator Fan ..................................... 25

Freezer Thermistor ............................................. 26

Defrost Heater ................................................... 26

Defrost Terminator ............................................. 28

Float Switch ........................................................ 28

Water Valve ......................................................... 29

Drain Pan Heater ................................................ 29

Service Procedures 30

Program Modes ..................................................... 30

Program Mode A .................................................... 30

Display Ref Temperature .................................... 30

Display Frz Temperature ..................................... 30

Defrost mode selection ....................................... 30

Conventional defrost time adjustment (CRTD) ... 30

Compressor low speed frequency ...................... 31

Adjust Cut-In Hysteresis .................................... 31

Adjust Cut-Out Hysteresis .................................. 32

Display Software Version .................................... 33

Exiting Mode A .................................................... 33

Program Mode B .................................................... 34

Adjust Freezer Temperature Offset ..................... 34

Adjust Refrigerator Temperature Offset .............. 34

Adjust MAX FRZ duration ................................... 35

Adjust MAX REF duration ................................... 35

Adjust FAST COOL duration ............................... 35

Adjust Door Open Alarm delay ........................... 36

Adjust Compressor Dwell Time ........................... 36

Adjust Compressor High Frequency ................... 36

Adjust DC Fan Cycling On Time ......................... 36

Adjust DC Fan Cycling Off Time ......................... 36

Exiting Mode B .................................................... 36

Program Mode C .................................................... 37

Set Model type .................................................... 37

Adjust Freezer Upper Temperature Limit ............ 37

Adjust Freezer Lower Temperature Limit ............ 37

Adjust Refrigerator Upper Temperature Limit ..... 38

Adjust Refrigerator Lower Temperature Limit ..... 38

Defrost lockout adder .......................................... 38

Defrost start delay ............................................... 39

Defrost termination delay .................................... 39

Constant Evaporator fan mode ........................... 39

Plant mode .......................................................... 39

ALARMS ................................................................ 40

1. High Temp Alarm ............................................ 40

2. Open Thermistor Alarm ................................... 40

3. Shorted Thermistor Alarm ............................... 41

4. Power Loss Alarm ........................................... 41

5. Door Open Alarm ............................................ 41

TABLE 1 - Model types ......................................... 42

Door Stop Adjustment ............................................ 43

Light Bulb ............................................................... 43

Door Hinge Adjustment .......................................... 43

Height Adjustment .................................................. 44

Diagnostics 46

VCC3 Inverter Diagnostic Codes ........................... 46

High Voltage Board ................................................ 47

Low Voltage Board ................................................. 48

Troubleshooting Guide ........................................... 49

Wiring Diagrams 52

Wiring and Component Testing .............................. 52

High Voltage Board ................................................ 52

Side by Side schematic .......................................... 53

Side by Side Wiring Diagram ................................. 54

Important Information

SAVE THESE INSTRUCTIONS

REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE SERVICE MANUAL AND TECHNICAL SHEETS

BEFORE BEGINNING REPAIRS.

Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime, a product may require service. Products should be serviced only by a qualified service technician that is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments, and the appropriate service manual.

Safety Information

We have provided many important safety messages in this manual and on the appliance. Always read and obey all safety messages. This is the safety alert symbol.

To avoid risk of serious injury or death, repairs should not be attempted by unauthorized personnel.

WARNING!

!

This symbol alerts you to hazards that can kill or hurt you and others. All safety messages will be preceded by the safety alert symbol and the word “DANGER”, “WARNING”, or “CAUTION”. These words mean:

DANGER!

IMMEDIATE HAZARDS WHICH WILL RESULT IN SEVERE PERSONAL INJURY OR DEATH.

WARNING!

Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION!

VIKING will not be responsible for any injury or property damage from improper service procedures. If performing service on your own product, you must assume responsibility for any personal injury or property damage which may result.

Technical support for authorized servicers:

1-800-914-4799

Address your written correspondence to:

Viking Preferred Service 1803 HWY 82 West Greenwood, MS 38930

Hazards or unsafe practices which COULD result in minor personal injury or product or property damage.

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

Important Information

Warnings

Read and follow all instructions before using this appliance to prevent the potential risk of

re, electric shock, personal injury, or damage

to the appliance as a result of improper usage of the appliance. Use appliance only for its intended purpose as described in this manual.

To ensure proper and safe operation: appliance must be properly installed and grounded by a

qualied technician. DO NOT attempt to adjust,

repair, service, or replace any part of your

appliance unless it is specically recommended

in this manual. All other servicing should be

referred to a qualied servicer.

Make sure that incoming voltage is the same as unit rating. An electric rating plate specifying voltage, frequency, wattage, amperage, and phase is attached to the product.

Electrical Requirements

WARNING!

TIP OVER HAZARD

Appliance is top heavy and tips easily when not completely installed. Keep doors closed until appliance is completely installed and secured per installation instructions.Use two or more people to move and install appliance. Failure to do so can result in death or serious injury.

WARNING!

ELECTRICAL SHOCK HAZARD

Disconnect power or turn power disconnect switch to “OFF” position before removing top grille. Failure to do so can result in death or electrical shock.

WARNING!

Assure that the electrical installation is adequate and in conformance with the National Electrical Code, ANSI/NFPA 70-latest edition or Canadian Electrical Code C22.1-1998 and C22.2 No. 0-M91 (or latest edition), and all local codes and ordinances. A 115 volt, 60-Hz, 15 amp, fused, electrical supply is required. It is required that a separate circuit serving only this appliance be provided. This appliance is equipped with a power supply cord having a 3-prong grounding plug. To minimize possible shock hazard, the cord must be plugged into a mating 3-prong, grounding-type wall receptacle. DO NOT use an extension cord.

Tip Over Hazard

Most of the unit’s weight is at the top. Extra care is needed when moving the unit to prevent tipping. Keep doors closed until appliance is completely installed and secured per installation instructions. Use two or more people to move and install appliance. Failure to do so can result in death or serious injury.

ELECTRICAL SHOCK HAZARD

Plug into a grounded 3-prong outlet. If a 2-prong wall receptacle is encountered, contact a

qualied electrician.

DO NOT remove ground prong. Unit must be grounded at all times. DO NOT use an adapter. DO NOT use an extension cord. Failure to follow these instructions can result in

death, re, or electrical shock.

WARNING!

BURN HAZARD

DO NOT touch condenser coils near defrost pan. Doing so can result in burns.

Model - Serial Number Matrix

VIKING RANGE CORP. LISTED HOUSEHOLD

General Information

V C S B 5 4 8 1 S S

Model Numbers

Serial Numbers

The serial number and model number for your appliance are

located on the identication

plate mounted on the upper left side of the door opening.

Viking Professional Series

Commercial

Side by Side

Built-In

Month

Year of Manufacture

Stainless

Refresh

48" Wide

Version

02 15 12 R1000264

Serial Number

Day

GREENWOOD, MISSISSIPPI 38930 REFRIGERATOR 35NN

MODEL/MODELE FDSB5421SS 6.25OZ R134a NUMBER/NUMERO

SERIAL/SERIE 021512R10000264 115 VAC/60 HZ NUMBER/NUMERO

AMPS: 9.9 PE920095

c

U

L

Operation

Settings and Functions

Power On/Off Switch (Power Interruption Switch) The power on/off switch is located behind your refrigerator’s top grille. It is used to turn the power “OFF” when cleaning the refrigerator or changing the light bulbs. Your refrigerator arrives from the factory with the power interruption switch “ON”.

To turn power “OFF”, remove the center grille blade. Press the power on/off switch to the “OFF” position.

To turn power “ON”, press power on/off switch to the “ON” position. Replace the center grille blade.

Electronic Temperature Settings

When power is first applied to the refrigerator, there will be two dashes displayed as in illustration. After approximately thirty seconds the digital display will change to numbers, indicating temperature in the refrigerator (default upon initial start-up) compartment along with the word REFRIGERATOR and degrees Fahrenheit.

To adjust temperature , enable the key pad controls by pressing and releasing the "ACTIVATE

ACTIVATE

CONTROLS

CONTROLS" pad. Select "REF TEMP" or "FRZ TEMP" pad for applicable section. The

FRZ

TEMP

temperature is then adjusted in that section

HIGHER

LOWER

by pressing "HIGHER or LOWER" pad while observing digital readout.

IMPORTANT: Be sure the power on/off switch is in the “ON” position after cleaning or changing light bulbs.

Key Press Confirmation

The key press confirmation is the "beep" that is heard when a control pad is pressed. This audible confirmation can be made active or

Electronic Temperature Settings

Your refrigerator’s electronic controls are located behind the door above the cabinet interior. To activate the electronic control panel,

ACTIVATE

CONTROLS

press “ACTIVATE CONTROLS” pad. All other pads, except the “Alarm Off” pad, will remain inactive until the ”ACTIVATE CONTROLS” pad is pressed. Once activated, pad remains programmable for at least ten minutes

inactive.

To deactivate the confirmation

ACTIVATE

CONTROLS

beep press and hold "ACTIVATE CONTROLS" pad for three seconds, three long beeps will be heard, confirming deactivation.

To activate the confirmation beep press and hold "ACTIVATE CONTROLS" pad for three seconds, three long beeps will be heard, confirming activation.

Operation

Fast Cool

Fast Cool is enabled by pressing and releasing the "ACTIVATE

ACTIVATE

CONTROLS

CONTROLS" pad and then pressing and releasing the "FAST COOL"pad.

FAST

COOL

This causes the control to temporarily (predetermined time, factory default is 2 hours) replace the freezer setpoint

o

to Max Frz temperature (factory default -5

F) and also the refrigerator setpoint to Max Ref temperature (factory default 33

o

F).

Max Frz time duration is adjustable in Program Mode B, range is 1 to 20 hours in 1 hour increments.

The only temperature speed used during this mode of operation is high speed (115HZ).

and releasing the "MAX FRZ" tab.

MAX

FRZ

This causes the control to temporarily (factory setting is 6 hours) change the current freezer set point

o

F. This set point temperature is not

to -5 adjustable and is programmed from factory.

The time duration is adjustable in Program Mode B, range is 1 to 20 hours in 1 hour increments.

When MAX FRZ is selected, the display illuminates "MAX FRZ" as shown above. The temperature display will move towards that set point temperature (- 5

o

F) as the unit pulls

down.

When "FAST COOL" is selected by pressing the pad, "FAST COOL" is illuminated on the display as shown in illustration above.

Fast Cool will terminate after the time duration has expired or if another mode is selected or if temperature is increased or decreased by pressing "HIGHER or LOWER" tabs. Fast Cool can be cancelled by pressing "FAST COOL" again, the Fast Cool will extinguish on the display.

MAX FRZ

Max Frz is enabled by pressing and releasing the "ACTIVATE

ACTIVATE

CONTROLS

CONTROLS" pad and then Pressing

Max Frz will terminate at the conclusion of the time duration or if another mode is selected, or if the temperature is manually changed by pressing "HIGHER or LOWER" tabs. Max Frz can also be terminated by again pressing and releasing "MAX FRZ".

The conclusion or termination of this mode is confirmed by "MAX FRZ" extinguishing from display.

MAX REF

Max Ref is enabled by pressing and releasing the "ACTIVATE

ACTIVATE

CONTROLS

CONTROLS" pad and then Pressing and releasing the "MAX FRZ" tab.

MAX

REF

This causes the control to temporarily (factory setting is 4 hours) change

o

the current refrigerator set point to 33

F.

Operation

This set point temperature is not adjustable and is programmed from factory.

The time duration is adjustable in Program Mode B, range is 1 to 20 hours in 1 hour increments.

When MAX REF is selected, the display illuminates "MAX REF" as shown above. The temperature display will move towards that set point temperature (33o F) as the unit pulls down.

Max Ref will terminate at the conclusion of the time duration or if another mode is selected, or if the temperature is manually changed by pressing "HIGHER or LOWER" tabs. Max Ref can also be terminated by again pressing and releasing "MAX REF".

The conclusion or termination of this mode is confirmed by "MAX REF" extinguishing from display

Forced Pull-Down (Forced compressor start)

This function will ignore compressor dwell time and cause immediate compressor start up in the high speed mode (115HZ).

Forced pull-down will terminate after both cut-out temperatures are met, or if a defrost or forced defrost is initiated, or if an extended power loss occurs.

Forced Defrost

To enter Forced defrost, first press and release "ACTIVATE

ACTIVATE

CONTROLS

CONTROLS", then press and hold "HIGHER" pad, then press and hold "DISPLAY OFF" pad until you get an

HIGHER

audible consisting of three beeps.

This causes the control to

DISPLAY

OFF

immediately suspend all temperature control operations and start a defrost cycle, regardless of compressor dwell time and defrost start delay.

If defrost terminator temperature is satisfied defrost heaters will come on at this time for a normal defrost cycle.

Forced defrost will terminate when defrost terminator opens (completion of cycle defrost) or if forced pull-down is initiated or if there is a long power loss..

To enter Forced pull-down, first press and release "ACTIVATE

ACTIVATE

CONTROLS

CONTROLS", then press and hold "LOWER" pad, then press and hold "DISPLAY OFF" pad also until you

LOWER

get an audible consisting of three beeps.

This causes the control to immediately energize the appropriate outputs in an effort to reach both of the cut-out temperatures (refrigerator and freezer).

DISPLAY

OFF

When forced defrost is initiated the temperature numbers are replaced with "dEF" in the seven segment displays, as shown above. When defrost is complete the displayed "dEF" will again be replaced with displayed temperature numerals.

Showroom Mode

Showroom mode allows electronic controls and interior lights to function independently of the refrigeration system.

Operation

ACTIVATE

CONTROLS

To enter Showroom mode: Press and hold the “ACTIVATE CONTROLS” pad. While holding, press and hold the “HIGHER” and “ALARM OFF” pad simultaneously.

HIGHER

Continue holding until three beeps are heard and then "SHOW" is illuminated along with Refrigerator and 38OF or Freezer and 0OF. Whichever section was active

ALARM

OFF

prior to to showroom mode being entered will determine which one is displayed.

To exit Showroom mode: Press and hold the “ACTIVATE CONTROLS” pad. While holding, press and hold the “HIGHER” and “ALARM OFF” pad simultaneously. Continue holding until three beeps are heard. The display will revert to normal operation

HIGHER

Sabbath Mode

To enter Sabbath mode, press and hold "ACTIVATE CONTROLS" pad

ACTIVATE

CONTROLS

then press and hold "DISPLAY OFF" pad, together for three seconds this will cause an audible

DISPLAY

OFF

three beeps, signifying that Sabbath mode has been entered. When Sabbath mode has been entered the display goes blank except for the "SAB", see illustration below, which will remain illuminated whether the door(s) are open or closed, it will not change state.

Sabbath mode is used to control the refrigerator without interior lights, LED display changes and enunciators. Alarms are suppressed, you will not get visual or audible alarms during Sabbath mode, although they are recorded in memory and will be displayed upon exiting Sabbath mode.

The freezer/refrigerator outputs (compressor, fans,etc.) should not have an immediate reaction from a user action. If the control calls for an action because the door was opened or closed, the control shall delay its reaction randomly (15-25 seconds).

To exit "SABBATH" mode, press and hold "ACTIVATE CONTROLS" and then "DISPLAY OFF" together for three seconds, an audible three beeps will be heard and "SAB" on display will extinguish. The display will return to normal and any alarms will be visually and audibly displayed.

Fahrenheit to Celsius

Factory default for readout is Fahrenheit, to change to Celsius,

ACTIVATE

CONTROLS

press and hold "ACTIVATE CONTROLS" and then press and hold "DISPLAY OFF" for three seconds and

o

F will change to oC.

DISPLAY

OFF

To change back to Fahrenheit, repeat same steps.

Operation

Display Panel Operation

The unit being serviced has a control panel that allows operation of the unit as well as diagnostic abilities. See the information below for details.

Operation Description How to Access Function

Keyboard Entry Tone Indicates a pad was pressed, com-

mand was read, and accepted

Command Accepted Tone Three short tones sound indicating a

command has been accepted

"ACTIVATE CONTROLS" Pad If the pad is activated, the display

panel remains active at least 10 minutes after the door is closed

"FRZ TEMP" Pad "FREEZER" will light up and buff-

ered freezer temperature will be displayed. Factory setting is 0

o

F

"REF TEMP" Pad "REFRIGERATOR" will light up and

buffered refrigerator temperature will be displayed. Factory setting is 38

"HIGHER" Pad Raises temperature settings one

degree at a time

"LOWER" Pad Lowers temperature settings one

degree at a time

"FAST COOL" Pad "FAST COOL" will light up enabling

the fast cool function which changes the freezer set point to max frz and the ref set point to max ref for a factory default of 2 hours.

"MAX RFZ" Pad Sets freezer temperature to coldest

setting (-5

o

F). Factory setting is 6

hours

"MAX REF" Pad Sets refrigerator temperature to

coldest setting (33

o

F). Factory set-

ting is 4 hours

"ALARM OFF" Pad Deactivates (partially or fully), audio/

visual alarm signals

"DISPLAY OFF" Pad Deactivates control panel except for

"ACTIVATE CONTROLS" and "DISPLAY OFF" pads

To turn off entry tone, press and hold “ACTIVATE CONTROLS” pad for 3 to 5 seconds

Press the “ACTIVATE CONTROLS” pad

Press “HIGHER” or “LOWER” pad

o

F

Press “HIGHER” pad. To raise temperature at a faster rate, hold the pad down

Press “LOWER” pad. To lower temperature at a faster rate hold, the pad down

Press "FAST COOL" pad. A second press will disengage feature.

Press “MAX FRZ” Pad to engage. A second press will disengage feature

Press “MAX REF” pad to engage. A second press will disengage feature

Press “ALARM OFF” to terminate audible alarm, visual alarm indicators will continue to blink until alarm condition is cleared or permanently disabled. To reactivate press and hold “ALARM OFF” pad for 3 seconds.

Press “DISPLAY OFF” pad to deactivate display. Press “ACTIVATE CONTROLS” pad to reactivate

Operation

Temperature Control Operation

For any temperature setting, outputs will be turned off/on based on cut-in/cut-out temperature determined by resistance levels of freezer or refrigerator thermistors.

Refrigerator and Freezer Thermistor (NTC) As temperature decreases, resistance increases. As temperature increases, resistance decreases.

Note: Open thermistor or thermistor circuit or a shorted thermistor will result in refrigerator continuing to cool with error code displayed. The affected section will call for cooling 100 percent of time except during defrost cycle

Deg F Deg C K-Ohms

-24 -31 565

-22 -30 531

-20 -29 499

-18 -28 469

-16 -27 441

-15 -26 415

-13 -25 391

-11 -24 368

-9 -23 347

-8 -22 327

-6 -21 308

-4 -20 291

-2 -19 274

0 -18 259

1 -17 245

3 -16 231

5 -15 218

7 -14 206

9 -13 195

Deg F Deg C K-Ohms

10 -12 185

12 -11 175

14 -10 165

16 -9 157

18 -8 148

19 -7 141

21 -6 133

23 -5 126

25 -4 120

27 -3 114

28 -2 108

30 -1 103

32 0 97

34 1 93

36 2 88

37 3 84

39 4 80

41 5 76

43 6 72

Deg F Deg C K-Ohms

45 7 69

46 8 65

48 9 62

50 10 59

52 11 56

54 12 54

55 13 51

57 14 49

59 15 47

61 16 44

63 17 42

64 18 41

66 19 39

68 20 37

70 21 35

72 22 34

73 23 32

75 24 31

77 25 30

Freezer temperature setting and thermistor value will determine if compressor/condenser fan and evaporator fan switches are open or closed. Compressor/ condenser fan switch must be open for 6 minutes before switch can close again (compressor dwell time). Refrigerator temperature setting and thermistor value will determine if fresh food switch is open or closed. Cut-out and cut-in temperature values must be reached and maintained for 15 seconds before output state will change (digital delay). Refrigerator and freezer control calibration can be adjusted in Program Mode A.

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Parts Location–Control Panel

Upper Grille Assembly

Control Panel

Overlay Switch

Power Disconnect SwitchHigh Voltage Board

Low Voltage Board

Inverter

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Upper Grille Assembly

Removal of the upper grille assembly allows access to the control assembly.

1. To remove the upper grille assembly, slide

out the middle air louver.

Middle Air Louver

2. With the middle grille louver removed,

remove the (2) 1/4" hex screws securing the grille assembly.

Control Panel

The control panel has an overlay switch attached to it that allows user input to the control boards.

1. To access the control panel, remove the upper air grill assembly (see Upper Grill Removal section), remove (2) screws securing the control panel.

Screws

Remove 1/4" screw on each side

3. Remove the grille assembly

2. Pull control panel from securing tabs.

Securing tab

3. Lower the control panel. Take caution with the ribbon cable to prevent damage.

Securing tab

Disassembly

O

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Control Panel (continued)

4. Remove the four screws securing the control board cover. Remove control board cover.

5. Disconnect the door switches from the back of the control panel.

7. Remove the two strain relief screws.

8. The control panel can now be removed and the high voltage and low voltage boards are accessible

9. Reverse procedure to reinstall

Overlay Switch

The unit uses an overlay switch to communicate user input to the control boards. The overlay connects to the control board via a ribbon cable.

6. Disconnect the ribbon from the control board.Take caution with the ribbon cable to prevent damage.

1. To replace the overlay switch, remove the upper air grill assembly, remove the control panel (see Air Grill and Control Panel Removal sections, Page 13).

2. Disconnect overlay switch from control.

Overlay Switch

Release tab and pull connector out of socket.

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Low Voltage BoardOverlay Switch (continued)

3. Peel overlay off control panel and remove (remove adhesive to ensure replacement overlay adheres properly)

4. Reverse procedure to reinstall.

High Voltage Board

A control board is used to operate functions of the unit. Once an input is received from the low voltage board, the high voltage board sends an output to activate the components.

1. To access the high voltage board, remove the upper air grill assembly, and control panel (see Air Grill and Control Panel Removal sections, Page 13).

2. Compress plastic standoffs securing the high voltage board and pull towards you.

The unit uses a control board in conjunction with an overlay switch to operate functions of the refrigerator/freezer. Interaction with the low voltage board is via the ribbon cable attached to the overlay switch.

1. To access the low voltage board, remove the upper air grill assembly, control panel (see Air Grill and Control Panel Removal sections, Page 13).

2. Compress plastic standoffs securing low voltage board, disconnect wiring and remove.

HV Board

To check low voltage board, refer to chart on Page 48.

High voltage board is now accessible. To check high voltage board, refer to chart on page 47..

3. Reverse procedure to reinstall.

LV Board

3. Reverse procedure to reinstall

Disassembly

DANGER!

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Power Disconnect Switch

The unit has a rocker switch, located in the upper right corner of the unit, that allows power to the unit to be turned “OFF” without removal of the unit.

ON/OFF switch has 120 vac connected

to one side of switch at all times, remove

power with circuit breaker box when

removing switch.

1. To access the power disconnect switch, remove the upper air grill assembly (see Air Grill Removal section, Page 13). The power disconnect is now accessible on the right side.

Inverter

The Compressor is operated by a Inverter that varies the voltage to the compressor. This is determined by the frequency input from the low voltage board

1. To access the inverter, remove upper air grill assembly, remove control panel assembly (see Air Grill and Control Panel Removal sections, Page 13).

2. Remove the control box in order to gain easy access to the door hinge area for service. There are 4 ¼” hex screws (2 on each side) holding the control box to the refrigerator housing. Remove these screws.

3. Unplug the 15-pin Molex power plug (A), as well as the 2-wire converter frequency

Verify contacts 4-5 open when the switch is in the “0” position and contacts 4-5 close when in the “|” position. 120 VAC should be measured when in the “0” position and 0 VAC should be measured when in the “|” position.

2. Switch bracket is mounted on electronics box with two 1/4" hex head screws.

3. Reverse procedure to reinstall.

cable (B) and the 3-wire thermistor plug (C).

Molex A

Molex

B

Molex C

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Inverter (continued)

4. The inverter is now accessible on the right side.

Inverter

120 VAC is supplied to the inverter from E4 on the High Voltage Board. The LV board sends 5 VDC to the inverter to operate the compressor.

5. Reverse procedure to reinstall.

2. Remove the control box in order to gain easy access to the door hinge area for service. There are 4 ¼” hex screws (2 on each side) holding the control box to the refrigerator housing. Remove these screws.

3. Unplug the 15-pin Molex power plug, as well as the 2-wire converter frequency cable and the 3-wire thermistor plug . Remove electronics box and set aside to gain access to condenser fan assembly.

4. Remove the three 1/4" hex screws

holding fan assembly in place, remove fan assembly

Condenser Fan

The condenser fan is located in the upper machine compartment of the unit. 120 VDC is supplied to the fan when the Compressor/ Condenser Fan relay closes to E4 on the High Voltage Board.

1. To access the condenser fan assembly, remove upper air grill assembly, remove control panel assembly (see Air Grill and Control Panel Removal sections, Page

13).

Condenser Fan

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Parts Location–Refrigerator Compartment

Plasma Cluster

Fan Assembly

Light Assembly

Ref Thermistor

Interior light

Water filter

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Light Assembly

The unit uses 40 watt bulbs to light the unit. The bulbs are located at the top of unit.

To access bulbs, remove light cover and bulb is accessible.

Bulbs

To check bulb, verify lament is not broken,

resistance in the bulb, and voltage is supplied to the socket.

Fresh Food Fan Assembly

The Side-by-Side units uses a fresh food fan to circulate air through the refrigerator compartment The fresh food fan is wired in parallel with the cross over fan. When the board calls for the fan to operate, 24 VDC is sent to the fan via the E1 (Purple) at the H.V. Board.

1. To access the fan, open the refrigerator door and remove the upper shelf. Remove (2) screws securing fan cover.

2. Lower fan cover to expose fresh food fan and disconnect wiring.

Fresh Food thermistor

3. Open freezer door and remove (2) screws securing air cover.

Air cover

4. Remove (2) screws securing fresh food fan and repair/replace fan.

Fresh Food fan cover

Fresh food fan

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Interior Lights

The unit uses two lights, one in the fresh food section and one in the freezer section, to provide lighting for the cabinet.

1. To access the light bulb, remove shelves.

2. Remove light cover. The fresh food light cover is removed by pressing up on the bottom of cover while gently pulling out on the top of the cover to release the cover tab from the mounting plate. The freezer light cover is removed by pushing down on the top of the light cover while gently pulling out on the bottom of the cover to release the cover tab from the mounting plate.

4. Remove the light assembly and replace/ repair the socket.

5. Reverse procedure to reinstall.

Plasma Cluster™

The Plasma Cluster™ ion air purier uses

ions to eliminate airborne bacteria, mold spores, and food odors without having to be replaced.

1. To access the plasma cluster, remove air cover (see fresh food fan procedure, Page 19).

2. With cover removed, remove the double sided tape securing the plasma cluster to the air cover, disconnect wiring, and repair/replace plasma cluster.

3. Remove the three securing screws to access the socket.

Plasma Cluster

3. Reverse procedure to reinstall.

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Parts Location–Freezer Compartment and Lower Unit–Non Dispenser

Drain Pan heater

Float Switch

Icemaker

Evaporator Fan

Freezer thermistor

Defrost heater

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Ice Maker (shown here with cover off)

The unit uses an ice maker that consists of a mold heater, thermostat, motor, and wire harness. The ice maker always starts from and stops at the “park” position. In the park position (the ejector blades are pointing horizontally towards the back of the ice maker). Just before reaching the

park, position the mold is lled with water. At

the park position all electrical components are de-energized, even though the shut-off arm is down, and the ice maker is ready for the next freeze cycle. The ice maker takes from 30 minutes to one hour to freeze the water. The primary time factors are the temperature in the freezer and the

amount of airﬂow around the ice maker.

Colder freezer settings and free air space around the ice maker to let air circulate will help make ice faster. After the ice forms, the ice maker continues to wait until it reaches 15ºF before it starts the harvest cycle. This ensures that the ice is solid in all the cavities. At 15ºF the thermostat closes, the mold heater turns on, and the ejector blades rotate up and forward until they stall out against the ice. The motor is designed to stall out and is geared to generate a lot of pressure. This minimizes the amount of melting needed to extract the ice. As soon as the ice is loose enough to move, the ejector pushes the ice out of

the mold during the second half of the rst

revolution. During the second revolution, the ejector pushes the ice into the bucket.

Just before the ejector completes the second revolution, the ice maker turns the water valve on for approximately 7 seconds and

rells the mold with approximately 4 ounces

of water and the freezing cycle is ready to begin again.

To access the ice maker, open the freezer door, remove bottom cover and the ice maker is accessible.

To access module, motor, and support assembly loosen screws in module access ports, disconnect shutoff arm, disconnect wiring harness and remove mold from support assembly.

Mounting screws

Mounting screw

Shutoff arm

Wire Harness

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

To access module and heater assembly, remove three screws on front of module and remove support assembly.

Module

To make ice, an ice maker needs power, water, and sub-freezing temperatures.

Note: The freezer door switch turns off power to the ice maker when the freezer door is open. It will be necessary to manually close the freezer door switch for some troubleshooting steps. Ensure that the shutoff arm is down and instruct customer on its use if necessary.

To ensure power to the ice maker without a meter, remove the module cover and take note of the test points.

N - Neutral side of line voltage

M - Motor connection

H - Heater connection

T - Thermostat connection

L - L1 (hot)side of line voltage

V - Water valve connection

Place a 14 gauge jumper wire across test points T and H. With hands clear of the ice maker, manually close the freezer door switch. This will put the ice maker in a manual cycle. If the ejector does not rotate, this indicates no power to the ice maker. Trace power from the wall socket to the door switch and to the connector. Repair circuit and connections or replace door switch as needed. If the ejector begins to rotate (very slowly) there is power. With power present, verify 0 VAC between test points

T and H (this veries the thermostat

has closed). Verify heater resistance is

approximately 264 Ω. With motor running,

verify heater is heating. If no heat is detected, replace mold assembly. Next ensure water is supplied to the ice maker. When the ejector blade gets to the 11:00 position, the water valve is energized for 7.5 seconds.

Verify the water valve has 120 VAC between test points V and N and approximately 4.75 ounces of water is dispensed. If voltage is present and water is not dispensed verify

water supply and ll rate. Poor water quality

can cause ice maker to fail or produce

unacceptable cubes. Install a water lter

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

to eliminate bad taste, odor, and visible contaminates. Mineral content or sand can

restrict screen in water ll valve or particles

of sand can keep valve from seating properly.

If water valve does not operate properly, the following could occur: no ice production,

small or hollow ice cubes, ﬂooding of ice

container. Mineral content can cause lime build up in the mold, wicking of water over the mold and poor cube release. Mineral content can also restrict saddle valves. Verify water supply line is “ON”, water pressure is not below 20 psi, saddle valve

Module Ohmmeter Checks No power to icemaker and Ejector blades in end

Test Points Component Module Position Ohms

is fully open clear restrictions by fully closing and opening valve to dislodge sediment (if necessary, remove valve and enlarge pierced hole to 3/16” diameter with a drill and reinstall saddle valve) ensure water line to unit is not pinched/kinked/ clogged, ice is not present in inlet tube blocking

water ﬂow, water pressure is not above 120 psi. Water ll can be increased by turning

the adjustment screw counterclockwise and decreased by turning the screw

clockwise. One half turn will adjust the ll

by approximately two thirds of an ounce. If supply is OK replace water valve. If no voltage is present, verify harness. If OK, replace module.

of cycle

L-H Mold & Heater Attached to support 264 L-M Motor Separate from heater 16,100

Module Voltage checks with motor or test light power to icemaker

Test Points Component Line Voltage 0 Volts

L-N Module Power On Power Off T-H Bimetal Open Closed L-H Heater On Off L-M Motor On Off

N-V Water valve On Off

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Thermal Cut Out (TCO)

The TCO is a safety device and must NOT be bypassed. If the TCO is found to be electrically open, this indicates an overheat in the ice maker and the ice maker must be replaced.

TCO

3. Remove right side light lens (see interior lights page 53).

Light lens

4. Remove screws and center evaporator cover.

Freezer Evaporator Fan

1. Remove lower freezer baskets.

2. Remove screws securing left and right freezer glides and remove glides.

Freezer glides

Evaporator Fan Cover

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

5. Disconnect wiring, and repair/replace freezer fan.

Evaporator Fan

6. Reverse procedure to reinstall.

Freezer thermistor

3. Pull thermistor into freezer cabinet, disconnect wiring, repair/replace thermistor.

Freezer Thermistor

The freezer uses the same thermistor as does the fresh food section however, the freezer thermistor controls the cycle of the compressor. As the temperature in the compartment changes, the resistance in this device changes. These changes are measured by the low voltage board, and controls the operation of the compressor, condenser, and freezer evaporator fan. Refer to the thermistor chart on page 11.

To access the freezer thermistor:

1. Remove drawers and shelves.

2. Remove screws securing the thermistor.

Freezer thermistor

4. Reverse procedure to reinstall.

Defrost Heater

The unit use a heater to help remove ice build up during the defrost cycle. When the defrost terminator closes, voltage is supplied to the heater via the control board. With the main power switch OFF, the defrost Heater can be tested by removing the orange wire off of terminal E6 on the HV board. Using an ohm meter, check the brown wire and Neutral and you should read approximately

30 Ω. During the defrost cycle Line voltage

passes through the Defrost Terminator the into terminal E5 (orange wire). With the defrost heater relay activated, the voltage

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

exits the HV board from Terminal E6 (orange) to the heating element If voltage is present at E5 but not at E6, then the Defrost relay is open. If there is 0 volts At E5, then the terminator is open.

Another method to test can be achieved by testing at the 15-wire Molex plug on the right side of the Control Housing. Refer to page 82 pin locations.

Defrost heater

Freezer thermistor

Evaporator cover

1. Remove screws securing rear panel and remove rear panel.

2. Remove clips securing defrost heater, disconnect wiring, and repair/replace defrost heater.

Defrost heater

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

3. Reverse procedure to reinstall.

Defrost Terminator

The defrost terminator is a bimetal switch

that is normally open. Below 20+/-8.5 ˚F, the terminator is closed. In order to test, rst

switch the main power switch to “Off”. Locate the brown wire on E5 of the HV board. Unplug the wire and check for continuity between the brown wire and the black wire at E10. If “0” is read then the bimetal is

closed. It innity (∞) is read, the bimetal is

open.

Note: Freezer temp must be below 20+/-8.5

˚F in order to check for a defective bimetal.

Another method to test can be achieved by testing at the 15-wire Molex plug on the right side of the Control Housing. Refer to page 82 pin locations.

Float Switch

The unit uses a ﬂoat switch in conjunction

with the drain pan heater to vaporize condensate created from the refrigerator cooling process. The switch is normally open and closes as the water level in the pan rises thus energizing the drain pan heater. When the water is vaporized the switch opens removing power from the drain pan heater.

To access the ﬂoat switch, remove the lower access panel and the ﬂoat switch is now accessible. Verify the switch reads innite

resistance when in the down position and

0 Ω in the up position. If the switch does not open or close properly, replace the ﬂoat

switch.

To access the defrost terminator:

1. Follow steps 1-4 under Defrost Heater disassembly.

2. Unclip the terminator, disconnect wiring, repair/ replace terminator.

Defrost Terminator

Disassembly

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Water Valve

The Non-Dispenser Side-by-Side models

utilize a single coil water valve to ll the ice

maker when required.

Drain Pan Heater

The unit uses a drain pan heater to evaporate condensate created by the refrigerator cooling process. The pan heater

is energized once the ﬂoat switch closes

supplying 120 VAC.

To access the drain pan heater, remove the lower access panel and the drain pan heater is accessible. Verify the resistance is

approximately 790 Ω. Verify 120 VAC to the heater and the ﬂoat

switch is closed. If the switch is closed and no voltage is supplied, verify wiring, power disconnect switch has not been turned “ON”, and supply voltage. If voltage is supplied, the

ﬂoat switch is closed, and the heater does

not energize, replace the heater.

Service Procedures

Program Modes

Program Mode A

Program mode A is entered by first pressing and releasing "ACTIVATE CONTROLS", then press and release "FAST COOL" once and within five seconds press and release the following pads in sequence, "HIGHER, LOWER, HIGHER, LOWER" You will hear an audible three beeps and the numeric display will change to "PrA", see illustration below.

HIGHER

ACTIVATE

CONTROLS

FAST

COOL

LOWER

Defrost mode selection

Unit is shipped in Adaptive defrost mode, this can be changed to Conventional defrost mode using the following procedure while in Mode A.

Press the "FAST COOL" pad once to display the current defrost mode.

FAST

COOL

This will result in a display of "Add" for adaptive or "Cnd" for conventional as shown in the illustrations below.

Display Ref Temperature

Press "REF TEMP" pad once to display the value of the thermistor temperature with the offset, no filtering is applied to the display. This readout will reflect instantaneous temperature changes on the refrigerator thermistor as shown below.

Display Frz Temperature

Press "FRZ TEMP" pad once to display the value of the thermistor temperature with the offset, no filtering is applied to the display. This readout will reflect instantaneous temperature changes on the freezer thermistor as shown in illustration, next column.

REF

TEMP

FRZ

TEMP

At this point pressing and releasing the "FAST COOL" pad will toggle between adaptive and conventional defrost modes of operation.

Conventional defrost time adjustment (CRTD)

The conventional defrost is adjusted based upon compressor run time between defrost cycles (CRTD). This time can be adjusted from between 4 hours (minimum) to 24 hours (maximum) in one hour increments.

Conventional defrost must first be selected as shown in previous step.

Service Procedures

Press and hold the "ALARM OFF" pad for three seconds until you

ALARM

OFF

hear 3 audible beeps and the display changes to "cd".

Pressing the "HIGHER or LOWER" pads will result in number of hours

HIGHER

being displayed and can be adjusted in one hour increments from 4 hours to 24 hours CRTD

LOWER

interval.

To exit this time period adjustment press and release "ACTIVATE CONTROLS" one time which will result in "PrA" being displayed. You are now back in Mode A.

Compressor low speed frequency

Pressing and releasing "HIGHER or LOWER" pads will bring the numeric

HIGHER

display up, pressing and releasing changes in increments of 1 HZ,

LOWER

holding the key down changes in increments of 5 HZ.

This value should be set at 75HZ for side by side model refrigerator,s see Table 1 on Page

42.

To exit the low speed adjustment press and release "ACTIVATE CONTROLS" one time which will result in "PrA" being displayed. You are now back in Mode A.

Adjust Cut-In Hysteresis

Cut-In hysteresis for the refrigerator and freezer is set to predetermined values, based upon model of refrigerator. This value can be set in Mode A as a separate adjustment or can be set automatically in Mode C when selecting model code, where several control values are set by eeprom. Table 1 on Page 42 lists eeprom values set by model code.

Compressor low speed frequency is set to a predetermined value based upon model of refrigerator. This value can be set in Mode A as a separate adjustment or can be set automatically in Mode C when selecting model code, where several control values are set by eeprom. Table 1 on Page 42 lists eeprom values set by model code.

To enter low speed frequency adjustment in Mode A, press and release "DISPLAY OFF" once, this will

DISPLAY

OFF

result in the display "CLF".

While still in Mode A press and hold "ALARM OFF" and then "HIGHER" pad for three seconds, the display will change to "CIH".

Press "REF TEMP to select the refrigerator compartment, the display will illuminate "REFRIGERATOR" on display.

Next Press and release "HIGHER or LOWER" which will result in displaying degrees in Fahrenheit. For the refrigerator section this

ALARM

OFF

HIGHER

REF

TEMP

HIGHER

LOWER

Service Procedures

should be set to appropriate value in table below

Refrigerator Cut-In

Model Value

5421 6

5481 6

Using Higher and Lower pads set to correct value as in illustration below.

Press and release "FRZ TEMP", this will result in "FREEZER"

FRZ

TEMP

illuminating on display.

Adjust Cut-Out Hysteresis

Cut-Out hysteresis for the refrigerator and freezer is set to predetermined values, based upon model of refrigerator. This value can be set in Mode A as a separate adjustment or can be set automatically in Mode B when selecting model code, where several control values are set by eeprom.Table 1 on Page 42 lists eeprom values set by model code.

While still in Mode A press and hold "ALARM OFF" and then"LOWER"

ALARM

OFF

pad at the same time for three seconds, the display will change to

HIGHER

"COH".

The freezer section should be set to appropriate value in table below.

Freezer Cut-In

Model Value

5421 7

5481 7

HIGHER

LOWER

Using Higher and Lower pads set to correct value as in illustration below.

To exit the cut-in adjustment press and release "ACTIVATE CONTROLS" one time which will result in "PrA" being displayed. You are now back in Mode A.

Press "REF TEMP to select the refrigerator compartment,

REF

TEMP

the display will illuminate "REFRIGERATOR" on display.

Next Press and release "HIGHER or LOWER" which will result in

HIGHER

displaying degrees in Fahrenheit. For the refrigerator section this should be set to appropriate value

LOWER

in table below.

Refrigerator Cut-Out

Model Value

5421 -6

5481 -6

Using Higher and Lower pads set to correct value as in illustration below.

Service Procedures

Press and release "FRZ TEMP", this will result in "FREEZER"

FRZ

TEMP

illuminating on display.

The freezer section should be set to appropriate value in table below.

Freezer Cut-Out

Model Value

5421 -7

5481 -7

HIGHER

LOWER

Using Higher and Lower pads set to correct value as in illustration below.

To exit the cut-out adjustment press and release "ACTIVATE CONTROLS" one time which will result in "PrA" being displayed. You are now back in Mode A.

Display Software Version

Exiting Mode A

To exit Mode A and retain any changes made in system up to this point you must press and hold "ACTIVATE CONTROLS" for

ACTIVATE

CONTROLS

three seconds until you hear three audible beeps. This signifies that the changes were written to the eeprom and that the system has left Mode A and returned to normal operation. Failure to do this will cause system to time out after 10 minutes and any changes will be lost.

While in Mode A, press and hold "DISPLAY OFF" for three seconds

DISPLAY

OFF

to show the software version on the temperature display. Pressing

HIGHER

"HIGHER or LOWER" will cycle between a letter prefix and a two digit version as follows:

LOWER

"A" + the major version "B" + the minor version "C" the build number

Service Procedures

Program Mode B

If you are not already in Mode A, go back to Mode A instructions on Page 30.

Once you are in Mode A (PrA in display), press and release "ACTIVATE CONTROLS" one time and display will change to "Prb", signifying that control is now in Program Mode B, see illustration below.

ACTIVATE

CONTROLS

Adjust Refrigerator Temperature Offset

Refrigerator temperature offset is a predetermined value, based upon model of refrigerator. This value can be set in Mode B as a separate adjustment or can be set automatically in Mode B when selecting model code, where several control values are set by eeprom. Table 1 on Page 42 lists eeprom values set by model code.

Adjust Freezer Temperature Offset

Freezer temperature offset is a predetermined value, based upon model of refrigerator. This value can be set in Mode B as a separate adjustment or can be set automatically in Mode B when selecting model code, where several control values are set by eeprom. Table 1 on Page 42 lists eeprom values set by model code.

Press and release "FRZ TEMP" pad once, the "FREEZER"

FRZ

TEMP

indicator will illuminate and the current freezer offset will be

o

displayed along with

This value should be set to appropriate value in table below.

Freezer Offset

Model Value

5421 -2

5481 -5

F.

HIGHER

LOWER

Press and release "REF TEMP" pad once, the "REFRIGERATOR" indicator will illuminate and the current refrigerator offset will be

o

displayed along with

F.

This value should be set to appropriate value in table below.

Refrigerator Offset

Model Value

5421 -6

5481 -4

REF

TEMP

HIGHER

LOWER

Using "HIGHER and LOWER" pads adjust value as in illustration below.

Service Procedures

Adjust MAX FRZ duration

While in Mode B, press and release "MAX FRZ" one time,

MAX

FRZ

this will result in "MAX FRZ" illuminating on the display along with the current numeric value in hours that MAX FRZ is set at. Factory default for this adjustment is 6 hours. Range is 1 to 20 hours in 1 hour increments.

HIGHER

The duration is adjusted using the "HIGHER and LOWER" pads.

LOWER

Adjust FAST COOL duration

While in Mode B, press and release "FAST COOL" one time,

FAST

COOL

this will result in "FAST COOL" illuminating on the display along with the current numeric value in hours that FAST COOL is set at. Factory default for this adjustment is 2 hours. Range is 1 to 20 hours in 1 hour increments.

HIGHER

The duration is adjusted using the "HIGHER and LOWER" pads.

LOWER

Adjust MAX REF duration

While in Mode B, press and release "MAX REF" one time,

MAX

REF

this will result in "MAX REF" illuminating on the display along with the current numeric value in hours that MAX REF is set at. Factory default for this adjustment is 4 hours. Range is 1 to 20 hours in 1 hour increments.

HIGHER

The duration is adjusted using the "HIGHER and LOWER" pads.

LOWER

Service Procedures

Adjust Door Open Alarm delay

While in Mode B, press and release "ALARM OFF" one time,

ALARM

OFF

this will result in "DOOR OPEN" illuminating on the display along with the current numeric value in minutes that the delay is set at. Factory default for this adjustment is 3 minutes. Range is 1 to 20 minutes in 1 minute increments.

HIGHER

The duration is adjusted using the "HIGHER and LOWER" pads.

LOWER

Adjust DC Fan Cycling On Time

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

If you see "dCo" in the display, immediately exit Mode B by holding "ACTIVATE CONTROLS" for three seconds until you get three audible beeps. Return to your previous actions.

Adjust DC Fan Cycling Off Time

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

If you see "dCF" in the display, immediately exit Mode B by holding "ACTIVATE CONTROLS" for three seconds until you get three audible beeps. Return to your previous actions.

Adjust Compressor Dwell Time

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

If you see "Cdt" in the display, immediately exit Mode B by holding "ACTIVATE CONTROLS" for three seconds until you get three audible beeps. Return to your previous actions.

Adjust Compressor High Frequency

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

If you see "CHF" in the display, immediately exit Mode B by holding "ACTIVATE CONTROLS" for three seconds until you get three audible beeps. Return to your previous actions.

Exiting Mode B

To exit Mode B and retain any changes made in system up to this point you must press and release "ACTIVATE CONTROLS" one

ACTIVATE

CONTROLS

time, the display changes to "PrA". This signifies that the changes were written to the eeprom and that the system has left Mode B and returned to Mode A.

The other way to ensure changes have been written into the eeprom is to press and hold "ACTIVATE CONTROLS" for three seconds and you will get three audible tones along with a normal temperature display. This indicates that you have left Mode B and returned to normal operation.

Failure to do this will cause system to time out after 10 minutes and any changes will be lost.

Program Mode C

Service Procedures

If you are not already in Mode B, go back to Mode B instructions on Page 34.

Once you are in Mode B (Prb in display), press and hold "ALARM OFF" for three seconds and

ALARM

OFF

display will change to "PrC", signifying that control is now in Program Mode C, see illustration below.

Set Model type

While in Mode C, press and release, either "FRZ TEMP or

FRZ

TEMP

REF TEMP" to display the current model type setting, a three digit number in the display.

REF

TEMP

Setting the model code is required whenever the low voltage board is replaced, this will update all of the settings indicated in Table 1 on Page 42 for the model you select. With this setting you can program all necessary settings with one input for the appliance.

Adjust Freezer Upper Temperature Limit

While in Mode C, press and hold "MAX FRZ" and and then hold the

MAX

FRZ

"HIGHER" pad for three seconds, this will result in the display changing to "FUL".

HIGHER

Pressing and releasing either "HIGHER or LOWER" pads

HIGHER

will allow you to change model types until you get to the proper three digit number for your unit,

LOWER

seeTable 1 on Page 42 Set the correct model code from table below.

Model code

Model Value

5421 342

5481 348

The "REFRIGERATOR and/or FREEZER" indicators will illuminate for each model type as it is selected depending upon the model configuration. (example: code 430 will only illuminate the "REFRIGERATOR" indicator because it is an All Refrigerator)

Pressing and releasing "HIGHER and LOWER" pads will increase

HIGHER

or decrease the set point, which

o

should be set at 7

F.

LOWER

Adjust Freezer Lower Temperature Limit

While in Mode C, press and hold "MAX FRZ" and and then hold the

MAX

FRZ

"LOWER" pad for three seconds, this will result in the display changing to "FLL".

LOWER

Service Procedures

Adjust Refrigerator Lower Temperature Limit

Pressing and releasing "HIGHER and LOWER" pads will increase

HIGHER

or decrease the set point, which

o

should be set at -5

F.

LOWER

Adjust Refrigerator Upper Temperature Limit

While in Mode C, press and hold "MAX REF" and then press and

MAX

REF

hold the "HIGHER" pad for three seconds, this will result in the display changing to "rUL".

HIGHER

While in Mode C, press and hold "MAX REF" and then press and hold the "LOWER" pad for three seconds, this will result in the display changing to "rLL".

Pressing and releasing "HIGHER and LOWER" pads will increase or decrease the set point, which should be set at 33o F.

MAX

REF

LOWER

HIGHER

LOWER

Defrost lockout adder

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

Pressing and releasing "HIGHER and LOWER" pads will increase or decrease the set point, which

o

should be set at 47

F.

HIGHER

LOWER

If you see "dLA" in the display, immediately exit Mode C by holding "ACTIVATE CONTROLS" for three seconds until you get three audible beeps. Return to your previous actions.

Defrost start delay

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

If you see "dSd" in the display, immediately exit Mode C by holding "ACTIVATE CONTROLS" for three seconds until you get three audible beeps. Return to your previous actions.

Defrost termination delay

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

Service Procedures

To exit Mode C and retain any changes made in system up to this point you must press and release "ACTIVATE CONTROLS" one time, the display changes to "Prb". This signifies that the changes were written to the eeprom and that the system has left Mode C and returned to Mode B.

The other way to ensure changes have been written into the eeprom is to press and hold "ACTIVATE CONTROLS" for three seconds and you will get three audible tones along with a normal temperature display. This indicates that you have left Mode C and returned to normal operation.

ACTIVATE

CONTROLS

If you see "dtd" in the display, immediately exit Mode C by holding "ACTIVATE CONTROLS" for three seconds until you get three audible beeps. Return to your previous actions.

Constant Evaporator fan mode

This mode only applies to All Refrigerator units and is ignored by any other unit configuration.

Plant mode

This adjustment is not a field adjustment and should not be performed by technicians. This is a factory only adjustment.

Failure to do this will cause system to time out after 10 minutes and any changes will be lost.

If you see "Pt" in the display, immediately turn power switch to OFF. Turn power back on and start over.

Service Procedures

ALARMS

There are ve alarms that signify faulty conditions,

they will each be covered in detail.

1. High Temp Alarm

Freezer High Temp alarm

When the freezer temperature reaches the high temp level (15 predetermined time (3 hours), also set in EEPROM, the "HIGH TEMP" indicator will come on and the

"FREEZER" indicator will ﬂash. You will also get

a continuous audible alarm, consisting of a beep pattern (ON - 0.5 sec, OFF 2 sec's).

o

F) ,set in the EEPROM at factory, for a

2. Open Thermistor Alarm

The controller will sense an open thermistor condition within 15 seconds of power on.

Open Refrigerator Thermistor Alarm

When the control senses that the refrigerator thermistor is open, "oPn" is displayed on the control along with the zone, "REFRIGERATOR". If the control was in the Freezer zone when the condition occurred, it automatically switches over to the faulty zone ("REFRIGERATOR"). You also receive an

audible alarm consisting of ve beeps that occurs

only one time. The visual alarms as described above will continue until the condition is corrected.

Refrigerator High Temp alarm

When the freezer temperature reaches the high temp

o

level (50

F) ,set in the EEPROM at factory, for a predetermined time (3 hours), also set in EEPROM, the "HIGH TEMP" indicator will come on and the

"REFRIGERATOR" indicator will ﬂash. You will also

get a continuous audible alarm, consisting of a beep pattern (ON - 0.5 sec, OFF 2 sec's).

If the condition(s) change and the units temperature(s) are brought back within limits as described above, the audible alarm will turn off. The "HIGH TEMP" and the appropriate zone (Refrigerator or Freezer) indicator will continue to operate as described above.

To cancel the audible alarm when condition rst

occurs, press and release "ALARM OFF", this will result in shutting off the audible alarm only.

To clear the "HIGH TEMP" and ﬂashing zone light

(FREEZER or REFRIGERATOR), the temperature must be brought down below the limit temperature as described in the appropriate zone above. Then pressing and releasing "ALARM OFF" once will clear the "HIGH TEMP" off the screen and the zone

indicator will stop ﬂashing.

Open Freezer Thermistor Alarm

When the control senses that the freezer thermistor is open, "oPn" is displayed on the control along with the zone, "FREEZER". If the control was in the Refrigerator zone when the condition occurred, it automatically switches over to the faulty zone ("FREEZER"). You also receive an audible alarm

consisting of ve beeps that occurs only one time.

The visual alarms as described above will continue until the condition is corrected.

The unit will continue to execute temperature control and defrost operations as required until the condition is corrected. The control does this through software programming, acting as if the cut-out temperature is never reached in the faulty zone, temperature control in the other zone is unaffected.

The visual alarms will reset by themselves within 15 seconds of the open thermistor condition being corrected and temperature control reverts back to normal operation.

Service Procedures

3. Shorted Thermistor Alarm

The controller will sense a shorted thermistor condition within 15 seconds of power on.

Shorted Refrigerator Thermistor Alarm

When the control senses that the refrigerator thermistor is shorted, "Shr" is displayed on the control along with the zone, "REFRIGERATOR". If the control was in the Freezer zone when the condition occurred, it automatically switches over to the faulty zone ("REFRIGERATOR"). You also

receive an audible alarm consisting of ve beeps

that occurs only one time. The visual alarms as described above will continue until the condition

4. Power Loss Alarm

If the control experiences a power loss condition and power is restored, the Power Loss alarm is displayed. This consists of the "POWER" indicator

being ﬂashed on and off along with the temperature digits ﬂashing on and off. All other indicators will be

off and only "ACTIVATE CONTROLS and ALARM OFF keys are active on the control panel.

There is no audible alarm indication associated with the power loss alarm. Pressing and releasing the "ALARM OFF" pad will result in "POWER" indicator extinguishing and the temperature digits revert back to normal temperature display.

is corrected.

Shorted Freezer Thermistor Alarm

When the control senses that the freezer thermistor is shorted, "Shr" is displayed on the control along with the zone, "FREEZER". If the control was in the Refrigerator zone when the condition occurred, it automatically switches over to the faulty zone ("FREEZER"). You also receive an audible alarm

consisting of ve beeps that occurs only one time.

The visual alarms as described above will continue until the condition is corrected.

The unit will continue to execute temperature control and defrost operations as required until the condition is corrected. The control does this through software programming, acting as if the cut-out temperature is never reached in the faulty zone, temperature control in the other zone is unaffected.

The visual alarms will reset by themselves within 15 seconds of the open thermistor condition being corrected and temperature control reverts back to normal operation.

5. Door Open Alarm

If the control senses that a door is open for a period of time, equal to the door open delay (factory default is 3 minutes, this time can be adjusted in service mode B) a continuous audible alarm will sound. At the same time "DOOR OPEN" illuminates on LED display and will remain on until condition is corrected.

Press the "ALARM OFF" pad and the audible alarm will cease. Pressing and holding the "ALARM OFF" pad for three seconds will disable the audible door alarm, until the "ALARM OFF" pad is again held for three seconds which will enable the audible door alarm once again.

These actions will not clear the visual "DOOR" alarm, that can only be cleared by shutting the doors and allowing the control to reset it.

Service Procedures

TABLE 1 - Model types

Model

Type

Model

Code

VCC Freq

Low

HZ

REF

Offset

o

F

FRZ

Offset

o

F

REF

Cut-In

o

F

REF

Cut-

out oF

FRZ

Cut-In

o

F

FRZ Cut-

out oF

REF user

default

temp

REF user

default

temp

BM36 136 65 -9 0 6 -6 7 -8 38 0

SxS42 342 75 -6 -2 6 -6 7 -7 38 0

SxS42D 242 75 -8 4 6 -6 7 -7 38 0

SxS48 348 75 -4 -5 6 -6 7 -7 38 0

SxS48D 248 75 -8 1 6 -6 7 -7 38 0

AF30 530 75 -2 7 -8 38 0

AF36 536 75 1 6 -6 38 0

AR30 430 75 -6 6 -6 38 0

AR36 436 65 -5 6 -6 38 0

Service Procedures

Door Stop Adjustment

Your refrigerator is factory set at 110° door stop position. To change to either the 90° or 120° position, remove the door stop pin located in the bottom hinge using a 3/16” allen wrench. For 120° swing, move the pin to stop hole closest to the unit. For 90° swing, move pin to stop hole farthest from the unit.

Door stop pin

To remove upper grill: 1a. (Professional) Lift center grille louver up and pull out.

1b. (Designer) Pull the center grille louver up at an angle and pull out.

Light Bulb

Disconnect power at breaker or turn power disconnect switch to the off position. Lightly grasp light cover with both hands and pull down. Replace bulb with an incandescent, medium base tubular bulb with a maximum of 40 watts. Replace cover by engaging light

bracket with the back ngers on the light cover. Once engaged, snap the front ngers

on the light cover.

Note: The clear section of the light cover is considered the back section. Reconnect power or turn power disconnect switch to the “ON” position.

Door Hinge Adjustment

Removal of the upper grill assembly allows access to door hinge for adjustment.

2. Using an 8” magnetic nut driver, remove the two 1/4” screws.

Service Procedures

3. Remove grille assembly.

4. Remove four side screws and remove unit top.

1. Remove lower kickplate screws using a Phillips screwdriver.

2. Remove upper kickplate screws using a Phillips screwdriver. Remove kickplate assembly.

5. Loosen the four hinge screws. Adjust door.

3. Using a 5/16” head wrench, turn the front (F) adjustment screws to raise or lower the front of the refrigerator.

6. Reverse procedure for reinstallation.

Height Adjustment

Removal of the kickplate allows access to rollers and stabilizing legs for height adjustment.

Note: DO NOT use an electric device. Over tightening can cause damage.

4. Using a 5/16” head wrench, turn the rear (R) adjustment screws to raise or lower the rear of the refrigerator.

Note: DO NOT use an electric device. Overtightening can cause damage.

5. Reinstall kickplate.

Service Procedures

Diagnostics

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

VCC3 Inverter Diagnostic Codes

Code Compressor

Status

1 Flash (every 15 seconds)

2 Flashes (every 5 seconds)

3 Flashes (every 5 seconds)

4 Flashes (every 5 seconds)

ON 1. No failure

OFF 1. No signal

OFF 1. Compressor

Possible Fault Service Action

• If system is not working properly, check other refrigeration

detected

from control board

2. Open Thermistor

from the con trol board

/ inverter cable open circuit

2. Compressor winding open circuit

damaged / system damaged

components.

• If refrigerator settings (thermistor conditions) are at levels

in which the compressor should be “ON”.

• Unplug inverter from power supply and wait for 2

minutes, reconnect the inverter to the power supply and wait for 12 minutes.

• If inverter still shows 1 ﬂash code and compressor is

OFF, then check the control board.

• Check frequency cable connection

• If frequency cable connection is good , replace

inverter.

• Check compressor/inverter cable connection

• Check compressor winding resistances (among the 3

terminal hermetic pins)

• If resistances are within specications and

compressor/inverter cable is OK, replace inverter.

• Check compressor input power

• Check compressor winding resistances

• Check leakage current between hermetic terminal

pins and compressor shell.

• If resistance or leakage current is out of spec, replace

the compressor.

• If resistance and leakage current are within spec,

check inverter/compressor cable for open circuit.

• Unplug inverter from power supply and wait for 2

minutes, reconnect the inverter to the power supply and wait for 12 minutes.

• If inverter still shows 4 ﬂash code and compressor is

OFF, replace the compressor.

No Flash OFF 1. No input

power

2. Inverter damaged

• Check the input power (115V)

• If there is no signal, check input power connections

• If voltage is within specs, unplug inverter from power

supply and wait for 2 minutes, reconnect the inverter to the power supply and wait for 12 minutes.

• If inverter still shows no ﬂash code and compressor is

OFF, change the inverter.

• If the inverter shows no ﬂash code and the compressor is

ON, diagnostic function is not working properly.

Diagnostics

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

High Voltage Board

E11 Ground

E1 Refrigerator/ Condensate Fans

E4 Compressor

Component Test

Point

Refrigerator/Condensate Fans

Evaporator Fans E2-E11 115 VAC

E1-E11 24 VDC

Reading

E14

E3 Line In–120 VAC

E14 Aux Heater

E2 Evaporator Fan

E7 Refrigerator Door Switch

E8 Freezer Door Switch

E9 Neutral

L1 Line In - 120 VAC

E5 Defrost Terminator

L1 E3-E11 115 VAC

Compressor / Condenser Fan

Defrost Terminator (closed)

Defrost Terminator (open)

Defrost Heater E6-E11 115 VAC

Ref door switch (top right light)

Freezer door switch (left light)

Neutral In E9-E11 N/A

Line In E10-E11 115 VAC

Ground E11 N/A

E4-E11 115 VAC

E5-E11 0 VAC

E5-E11 115 VAC

E7-E11 115 VAC

E8-E11 115 VAC

E6 Defrost Heater

E12 Neutral in

E13 Light Relay

Neutral In (lights) E12-E11 N/A

Neutral Out (lights) E13-E11 115 VAC

Aux Heater (Dispenser units only)

E14-E11 115 VAC

Diagnostics

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

P3

J7

P8

P4

Low Voltage Board

Pin location Function Voltage range Signal

P4-1 Dc supply to

thermistors

P4-2 Freezer thermistor

input

P4-3 Refrigerator

thermistor input

P4-4 Provide zero

timing

P4-5 DC Fan enable 17.8 vdc - 38

P4-6 Defrost

termination

P4-7 Evaporator fan

enable

P4-8 Compressor

enable

P4-9 Defrost termina-

tion signal

P4-10 Door signal 25.8 vdc - 38

P4-11 PS Reference 0 vdc DC

P4-12 -30 vdc 22.8 vdc - 38

P4-13 Not used AC

P4-14 Not used AC

P4-15 Light enable relay 17.8 vdc - 38

4.5 - 5.5 VDC, ref to P4-12

0 - 5.5 VDC, ref

to P4-12

0 - 5.5 VDC, ref

to P4-12

26 V p-p to 34V

p-p, ref P4-12

vdc, ref to

chassis grnd.

17.8 vdc - 38 vdc, ref to

chassis grnd.

17.8 vdc - 38

vdc, ref to chas-

sis ground

17.8 vdc - 38

vdc, ref to chas-

sis ground

25.8 vdc - 38

vdc, ref to chas-

sis grnd

vdc, ref to chas-

sis grnd

vdc, ref to chas-

sis ground

vdc, ref to chas-

sis ground

DC

See Note 1

below

DC

See Note 2

below

See Note 2

below

See Note 2

below

See Note 2

below

See Note 2

below

See Note 2

below

See Note 2

below

NOTE 1 : Requires an oscilloscope to measure NOTE 2 :DC voltage- load of meter can affect measurement

P5

P9

Diagnostics

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Troubleshooting Guide

Below and on the following page are some general guides should a problem be detected. Please refer to the test procedures in this manual to determine the defective component.

Problem Probable Cause Correction

Unit will not operate Power supply

Circuit breaker Power switch

Water overﬂows defrost pan Unit not level

Float switch Pan heater

Ice maker will not operate Freezer too warm

Shut off arm Water valve Water supply

Refrigerator too warm Door opening

Warm food placed in unit Control setting Door seal

Airﬂow

Refrigerator fan

Refrigerator too cold Temperature setting

Control board

Airﬂow

Freezer too warm Control setting

Door seal Dirty condenser Control board

Verify voltage Reset breaker Turn to the “ON” position

Ensure unit is level

Verify operation of ﬂoat

Verify heater is working

Verify freezer temperature Verify the arm is in the “ON” position Verify valve operation Verify water supply

Minimize door openings Allow temperatures to stabilize Move control to medium setting Verify closure, replace if needed

Ensure airﬂow is not obstructed

Verify movement/operation of fan

Move control to medium setting Verify proper operation

Verify airﬂow is proper

Move control to medium setting Verify closure, replace if needed Clean condenser coil Verify operation

Freezer too cold Temperature setting

Defrost thermostat Control board

Unit runs continually Control setting

Door seal Dirty condenser Condenser/evaporator fan Control board Freezer thermistor

Frost on evaporator Defrost thermostat

Evaporator fan Defrost heater

Unit running and no lights Sabbath Mode

Open circuit

Move to medium setting Verify thermostat is closing Verify operation

Move to medium setting Verify closure, replace if needed Clean condenser coil Verify movement/operation of fan Verify operation Verify thermistor is not shorted

Verify thermostat is closing Check connection and possible short open condition

Verify operation of Sabbath Mode Repair/replace wiring

Diagnostics

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Ice Problems Action

Jammed cubes (small or oversized cubes) Adjust ll level or level ice maker or refrigerator

Hollow cubes Adjust low ll or remove restrictions in supply line

Level ice maker or refrigerator

Remove obstructions to air ﬂow at ll end so it freezes before

thermostat end

Ice build-up on ejector blades Usually caused by hollow cubes

See hollow cubes above Remove ice maker, thaw out

Cubes falling back into mold during ejection Check if ll cup is displaced and blocking ice

Fix ll cup or replace ice maker

Cubes falling over back of ice maker Check if ll cup is displaced and blocking ice

Fix ll cup or replace ice maker

Power Problems Action

No power to ice maker at connector socket Determine discontinuity by tracing power

No power to water valve Determine discontinuity by tracing power

Water Problems Action

No water to refrigerator Turn on supply

Look for obstructions in supply line or valve

No water to ice maker Look for obstructions in water valve or ll tube

Clogged water valve Clean or replace water valve depending on type

Insufcient water to ice maker (with correct ll time)

Low water pressure at supply Increase water pressure to 20 – 120 PSI

Low water pressure at water valve Look for restrictions in line

Excessive water pressure Install pressure regulator and set to 60 PSI

Low water ll volume Adjust water ll screw, clear obstructions in supply line or supply

Excessive water ll volume Adjust water ll screw, reduce water pressure, or replace water

Water overﬂows ll cup Reposition ll-tube in ll cup or remove obstruction in ll cup

Water overﬂows mold Adjust water ll screw, level ice maker or refrigerator, reduce

Leaky water valve Tighten connections or replace water valve

Temperature Problems Action

Freezer too warm Adjust freezer setting or repair refrigerator

Check for restrictions in supply line and valve, especially saddle valves

valve, or replace water valve

valve

water pressure, or replace water valve or ice maker

Diagnostics

WARNING!

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test procedures require power to be connected. Discharge capacitor through a resistor before attempting to service. Ensure all ground wires are connected before certifying unit as repaired and/or operational.

Ice maker Problems Action

Raised shut-off arm Lower shut-off arm to “ON” position

Broken or bent shut-off arm Repair arm or replace ice maker

Shut-off arm stuck or obstructed Remove obstruction

Ice maker not level Check level of refrigerator rst, then level ice maker

Can’t level ice maker Level refrigerator rst, then try again

Open thermostat (won’t close below 17˚F) Replace thermostat

Closed thermostat (won’t open above 32˚F) Replace thermostat

Thermostat out of calibration Replace thermostat

Heater not staked in mold Replace ice maker

Won’t cycle test with power available Replace ice maker

Won’t eject ice with power available Replace ice maker

Wiring Diagrams

Wiring and Component Testing

High Voltage Board

Chart for cable view layout

Side by Side schematic

Wiring Diagrams

Side by Side Wiring Diagram