tech-sheet-12074212
Viking Technical Information—Refrigerator

VCBB360RSS P1322801W VCBB360LSS P1322802W VCBB360RWH P1322803W VCBB360LWH P1322804W VCBB360RBK P1322805W VCBB360LBK P1322806W

• Due to a possibility of personal injury or property damage, always contact an authorized technician for servicing or repair of this refrigerator.

• Refer to Service Manual for design, disassembly, ice maker, safety, testing, and troubleshooting information.

! WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to refrigerator using power switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure correct earthing and polarization. After servicing, reconnect power using power switch.

Model VCBB360LSS, VCBB360RSS, WH, & BK WH, & BK Capacity Electrical 21 cu ft 21 cu ft requirements 115 VAC 60 Hz 115 VAC 60 Hz separate 15A 15A circuit Refrigerant R134a R134a type 35 35 Width without side 237/8 237/8 extrusions Depth 831/4 –841/4 831/4 –841/4 without handle includes door extrusions Height range rollers to top of air grille

No Load Performance Controls in Normal Position

Kw/24 hr ± 0.4 Percent Run Cycles/24 hr Refrigerator Center Freezer 65° 90° 110° Time ±10% ±25% Compartment Food Compartment 65° 90° 110° Food Average 1.2 2.3 4.2 65° 90° 110° Average Temperature ±3°F 28 52 100 Temperature ±3°F 65° 90° 110° 30 32 0 Ambient 65° 90° 3 3 3 °F 110°

39 39

45

Temperature Relationship Test Chart

T-1 Outlet ±3°F T-2 Inlet ±3°F T-3 Suction Average Total Suction Pressure Head Line Wattage ±10% ±2 PSIG Pressure

±7°F ±5 PSIG

Ambient 65° 110° 65° 110° 65° 110° 65° 110° 65° 110° 65° 110° °F

-14 -14 -14 -14 25 103 157 168 0 0 110 157

Return Technical Sheet to envelope after service

September 1999 1 12074212

Refrigerant Flow

CONDENSER DRIER

SUCTION COMPRESSOR TUBE COMPRESSOR (ACCESSIBLE DISCHARGE TUBE FROM REAR) EVAPORATOR CAPILLARY TUBE PRECONDENSER SERPENTINE PRECONDENSER LOOP (FOAMES September 1999 IN PLACE)

CONDENSATE EVAPORATION DC FAN (ELECTRONICALLY CONTROLLED)

CONDENSATE PAN

12074212 2

Cabinet Air Flow REFRIGERATOR AIR SUPPLY TUNNEL TO REFRIGERATOR FRESH FOOD DC FAN RETURN AIR (ELECTRONICALLY TUNNEL CONTROLLED)

FREEZER AIR DELI DRAWER SUPPLY GRILLE AIR SUPPLY

EVAPORATOR FAN ASSEMBLY

REFRIGERATOR RETURN AIR TUNNEL

EVAPORATOR

September 1999 CABINET AIR FLOW 12074212 84″ BOTTOM MOUNT

3

Machine Compartment Air Flow

CONDENSER

CONDENSER FAN ASSEMBLY

COMPRESSOR

12074212 4 September 1999

Component Specifications

Component Description Test Procedures 115 VAC Bulb 40 watts Volt W att

Capacitor, compressor run Volt 220 VAC C om pressor Capacitance 15 Mfd +10%

Drier -5%

Type Fan Cooled, R134a refrigerant BTUH 970 BTUH Volt 115 VAC 60 Hz W att 170 watts Current 21.3 A Lock rotor 1.6 A Full load Resistance 2.60 Run W indings 4.35 Start W indings

Drier must be changed every time the system is opened for testing or compressor replacement.

Desiccant (20) 8 x 12 4AXH – 7 M.S. -Grams

Heater, evaporator Volt 115 VAC W attage 450 ± 5% W Resistance 30 ± 5%

Heater, mullion Volt 115 VAC W attage 20 W For service use only. Resistance 661 ±7.5 Foamed in place. Not powered from the factory.

! WARNING

To avoid risk of electrical shock which can cause death or severe injury, disconnect electrical power to unit before servicing.

High voltage circuit board, PC To connect mullion heater to power: Low voltage circuit board, PC 1. Disconnect power to unit using power switch. 2. Remove toe grille. Locate water valve wiring harness. 3. Carefully, slit wiring harness vinyl sleeve to expose one black and

one white lead bent with bullet terminators. 4. Locate mullion heater leads at the left side of cabinet and connect to

black and white leads. 5. W rap vinyl sleeve with electrical tape to close slit. See “Electronic Functional Description”

See “Electronic Functional Testing”

September 1999 5 12074212

Component Specifications

Motor, condenser PSC Volt 115 VAC, 60 Hz Rotation (facing end opposite Clockwise shaft) RPM 1300 RPM Watt 6.4 W Current 0.05 A Resistance 480

Motor, ECM evaporator fan Volt 115 VAC, 60 Hz Rotation (facing shaft) Counterclockwise RPM 2150 RPM Watt 2.2 W

Motor and blade, refrigerator fan and Volt 24 VDC condensate evaporation fan Rotation (facing shaft) Counterclockwise RPM 3300 RPM Watt 1.4 watts

Overload Volt 115 VAC Relay Ult. trip amps @ 158°F (70°C) 3.51 A Close temperature 142°F (61°C) ±9° Open temperature 257°F (125°C) ±5° Short time trip (seconds) 10 seconds Short time trip (amps @ 77°F 14 A (25°C))

Resistance 3²12 With power off check: 0 Very high or infinite ohms Across terminals 2 & 3 Shorted Open

Switch, Keyboard Switch Continuity PIN NO. S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 Switch, auger interlock Test 1 Functions 1, 3 and 4 Enable Key S1 1, 3 and 6 3

Freezer S2 1, 3 and 7 6

Temperature 1, 6 and 7 1, 4 and 6 Refrigerator S3 1, 4 and 7 7 1, 7 and 8 Temperature 1, 4 and 8 1, 4 and 5 Warmer S4 1, 5 and 8 4

Colder S5 8

Vacation S6

Max Cool S7 5

Fast Freeze S8 PERIMETER STATIC GUARD Alarm Off S9

Display Off S10

SWITCH SCHEMATIC

Type DPST, NO Volt 250/125 VAC Current 5/2.5 A

Switch, refrigerator light (left opening Type SPST, NC 125/250 VAC door hinge) Volt 3 A

Current

12074212 6 September 1999

Component Specifications

Switch, refrigerator light (right opening Type SPST, NC 125/250 VAC door hinge) Volt 3 amps

Current

Switch, power Type DPST Volt 125 VAC Current 15 A

Switch, freezer light, sealed Type SPST, NC Volt 125/250 VAC Current 5.0/5/0 A

Switch, showroom Type SPDT Volt 125 VAC Current 6 amps

Therm istor Check resistance across 30,000 ohm s “1% ohm s Therm ostat term inals 68,200 ohm s “2% ohm s Bell Curve resistance (See Valve, water Page 11) 120 VAC 1000 watts @ 77ƒF 10 amps @ 45ƒF Volt Open W att C lo s e d Current W ill stay in current state (either open or Resistance across term inals closed) until either 55° ±6°F and 20° Above 55° ±6°F ±8°F is reached. Below 20° ±8°F Between 55° ±6°F and 120 VAC, 60 Hz 20° ±8°F 20 watts

Volt 120 PSI W att 20 PSI W ater pressure (inlet) 140 ±10 CC’s at 7.5 seconds Max M in Fill rate

September 1999 7 12074212

Display Panel

FRZ REF HIGH VACATION MAX TEMP TEMP TEMP FRZ MAX COLDEST DOOR REF OPEN

FR Z REF HIG H V A CA TIO N MAX TEM P TEM P TEM P FR Z MAX 15.2 cu. ft. Refrigerator Display Freezer Ref Higher Lower COLDEST DOOR REF Max Max Alarm Display Electronic Temperature Control 5.7 cu. ft. Freezer On Temp Temp Temp Temp OPEN

Vacation Ref Frz Off Off Automatic Exteroir Moisture Control

Display FRZ Ref Higher Lower Vacation Max Max Alarm Display On Temp Temp Temp Frz Off Off Temp Ref

12074212 Display Panel September 1999 Keyboard

8

Display Panel Operation

Keyboard Pad Functions Max Ref Pad Activates Maximum refrigerator mode setting Entry Tone refrigerator to coldest setting for 24 hours or until Indicates a pad was pressed, command read and Max Ref pad is pressed again. accepted. Turn off entry tone by pressing and holding Display On pad for 3 to 5 seconds. 1. Refrigerator indicator light will glow.

Command Accepted Tone 2. To adjust maximum refrigerator time refer to Mode Three short tones indicate command accepted. B functions.

Display On Pad Alarm Off Pad 1. Activates control panel. Control panel remains Turns off alarm signals. See Alarms section to interpret alarm signals. active at least 10 minutes. 1. Press and hold Alarm Off pad for 3 seconds to 2. Turns off Power Up Alarm (flashing lights) after deactivate Door Open alarm. To reactivate Door power is first plugged in or after power outage. Open alarm, press and hold Alarm Off pad for 3 seconds. Note: All pads, except Alarm Off, are inactive until Display On is pressed. 2. If Alarm Off pad is pressed and condition causing alarm is not corrected, alarm will reset. Freezer Temp Pad Activates freezer temperature setting mode. Vacation 1. Freezer indicator light will glow. Freezer Activates Program Mode. See Program Mode section for description of functions available. temperature setting will be displayed. Factory 1. Open refrigerator door. setting is 5. 2. Change freezer temperature setting by pressing 2. Press Display On pad. Warmer or Colder pad. 3. Press vacation pad. Ref Temp Pad Activates refrigerator temperature setting mode. 4. Within 6 seconds press the following pads in this sequence: Max Ref, Max Frz, Max Ref, Max Frz. 1. Refrigerator indicator light will glow. Refrigerator temperature setting will be displayed. Factory 5. Tone will sound 3 times and control will be in setting is 5. program mode A.

2. Change refrigerator temperature setting by pressing Display Off Pad Warmer or Colder pad. 1. Deactivates control panel.

Warmer Pad 2. Deactivates temperature indication area of control. Raises temperature setting one bar at a time. If entry panel. tone is on, tone will sound at each bar level until top level is reached. 1. Turn on temperature setting function of control

panel by pressing Warmer pad.

2. Press and hold Warmer pad to raise temperature setting at a faster rate.

Colder Pad Lowers temperature setting one bar at a time. If entry tone is on, tone will sound at each bar level until bottom level is reached. 1. Turn on temperature setting function of control

panel by pressing Colder pad.

2. Press and hold Colder pad to lower temperature setting at a faster rate.

Max Frz Pad Activates Maximum freezer mode setting freezer temperature to coldest setting for 24 hours or until Max Frz pad is pressed again. 1. Freezer indicator light will glow. 2. To adjust maximum freezer mode time refer to

Program Mode B functions.

September 1999 9 12074212

Electronic Functional Description

Power Disconnect Switch Thermistor Alarm Alarm sounds and freezer or refrigerator indicator light Use power disconnect switch to disconnect power shows and temperature indicators 4 through 7 will turn without unplugging refrigerator. Power disconnect on in sequence if either thermistor circuit opens. Refer switch is located behind air grille on top right side. to Temperature Control Operation Section and Refrigerator is shipped with power disconnect switch in Electronic Testing Section. the on position. 1. Press Alarm Off pad to turn off alarm. Showroom Switch 2. Alarm will retest for normal operation. If condition Showroom switch allows electronic controls and has not been corrected, alarm will sound again. interior lights to function independently of refrigeration system. Showroom switch is located behind air grille to right of control panel. Refrigerator is shipped with showroom switch in unit run position.

Showroom switch

Power marAsl switch

Alarms

Power Up Alarm After power is initially plugged in, after a power loss, or if power switch is turned off, all temperature indicator lights will flash until Alarm Off or Display On is pressed.

Note: All settings return to default factory settings.

Door Open Alarm Alarm tone sounds and indicator lights blink if either refrigerator or freezer door is open more than 3 minutes. 1. Turn off Door Open alarm by pressing Alarm Off

pad or by closing door.

2. Deactivate door open alarm by pressing Display On pad and then press and hold Alarm Off pad for 3 seconds.

3. Door alarm delay can be adjusted in Program Mode B.

High Temperature Alarm Alarm sounds and indicator light shows if freezer or refrigerator temperature has gone above critical level and remained warm for 2 hours. Alarm tone stops if temperature falls again. 1. Critical temperature for freezer is +15°F; for

refrigerator critical temperature is +55°F.

2. Press Alarm Off pad to turn off alarm.

12074212 10 September 1999

Electronic Functional Description

Temperature Control Operation Factory set freezer and refrigerator settings

For any temperature setting, outputs will be turned Frozen Food Fresh Food off/on based on cut-in/cut-out temperatures determined by resistance levels of freezer and refrigerator Cut-Out Cut-In Cut-Out Cut-In Level thermistors. °F ±1.5° °F ±1.5° °F ±1.5° °F ±1.5° 9 Refrigerator and Freezer Thermistor 8 7 Temp °F Resistance Temp °F Resistance -10 2 29 34 6 5 Ohms Ohms -8 4 31 36 4 3 -6 6 33 38 2 1 -20 495600 36 87510 -5 7 34 39 Fast -15 418200 38 82740 Freeze 78300 -4 8 35 40 Max -9 354000 39 74100 Cool -6 300600 43 70170 -3 9 36 41 -4 256200 45 66450 5 218850 46 62970 -2 10 37 42 10 187470 48 59670 16 161040 50 52290 0 12 39 44 19 138690 55 45900 25 119760 61 2 14 41 46

-10 2 — —

— — 39 44

As temperature decreases, resistance increases. As temperature increases, resistance decreases.

Open thermistor or thermistor circuit will result in failure of refrigerator to cool.

Shorted thermistor will cause refrigerator to run 100 percent of time except for defrost cycle.

• 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 fan 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 B.

September 1999 11 12074212

Electronic Functional Description

Adaptive Defrost Operation

Defrost occurs after predetermined length of compressor run hours. Compressor run time between defrosts changes, or adapts, depending upon recent history of defrost lengths (time it takes for defrost terminator to open after defrost heater has been turned on). • Defrost terminator opens at 55°F (13°C) and closes

at 20°F (-7°C).

• Compressor run time between defrost (CRTD) will be one of 3 values under normal operation: CRTD 1 (8 hours) or CRTD 2 (12 hours) or CRTD 3 (16 hours).

If defrost length is low (DT-LO defined as 21 minutes) indicating small frost load, CRTD for next defrost cycle is advanced to next level.

If defrost length is high (DI – HI defined as 24 minutes) indicating large frost load, CRTD for next defrost cycle is lowered to next level.

If defrost length is between 21 and 24 minutes, CRTD for next defrost cycle remains the same.

Initial value at power up CRTD 0 is 4 hours.

• Vacation Mode CRTD equals 96 hours. Vacation Mode CRTD is interrupted with door openings. Defrost interval will revert back to interval before Vacation Mode. Three things must occur to reach Vacation Mode CRTD:

1) Defrost interval must be CRTD 3 (16 hours).

2) Both refrigerator and freezer doors must have remained closed since last defrost cycle.

3) Defrost thermostat must have opened in less than 21 minutes during last defrost cycle.

• Six minute dwell time occurs after defrost terminator opens before compressor and condenser fan motor will operate. Ten minute dwell time occurs after defrost terminator opens before evaporator fan motor will operate. Dwell time can be bypassed by disconnecting power to the unit for 30 seconds.

• Conventional defrost can be selected in Program Mode B.

12074212 12 September 1999

Program Mode

Accessing Program Mode Mode B Functions

Two programming modes are available. Mode A allows Automatic Keyboard Function reading refrigerator and freezer thermistor Activate and deactivate keyboard by toggling temperatures. Mode B is used for all other Display Off pad. If high temperature indicator glows, programmable functions. keyboard will disable after 10 minutes. If high temperature indicator is off, keyboard is always 1. Open refrigerator door. enabled. DO NOT LEAVE KEYBOARD IN ENABLED 2. Press Display On pad. MODE AFTER PROGRAMMING IS COMPLETE. 3. Press Vacation pad. 4. Press the following sequence of pads within 6 Door Alarm Delay 1. Press Alarm Off pad. Door open indicator will glow. seconds: Max Ref, Max Frz, Max Ref, Max Frz. 5. When access is granted, tone will sound three time One temperature indicator should glow indicating present delay setting in minutes (indicator 1 means and control will be in Program Mode A. Unmarked 1 minute, 2 means 2 minutes, etc.) Default delay is indicator light will illuminate. 3 minutes. 6. Toggle to Program Mode B by pressing Display On pad. Unmarked indicator light is off. 2. Press Warmer pad to decrease delay by 1 minute.

EEPROM Update in Control Memory 3. Press Colder pad to increase delay by 1 minute.

EEPROM is permanent programmable memory of the Max Ref Run Time Duration control panel. 1. Press Max Ref pad. Max Ref light will glow. One • Entry tone, door audio alarm and status are stored temperature indicator should glow indicating in EEPROM after control panel is deactivated. present Max Ref run time duration in 2 hour increments (indicator 1 means 2 hours, 2 means 4 • Information stored in EEPROM memory is not hours, etc.) Default delay is 10 hours. affected by power loss. 2. Press Warmer pad to decrease Max Ref duration by Mode A Functions 2 hours.

Reading Temperature Display 3. Press Colder pad to increase Max Ref duration by 2 hours. Temperature display will show thermistor temperature Max Frz Run Time Duration in binary coded decimal format (BCD). Indicator lights 1 1. Press Max Frz pad. Max Frz light will glow. One

through 4 represent the tens digit with 1 being the most temperature indicator should glow indicating present Max Frz run time duration in 4 hour significant bit. Indicator lights 5 through 8 represent increments (indicator 1 means 4 hours, 2 means 8 hours, etc.) Default delay is 24 hours. ones digit with 5 being the most significant bit. Positive 2. Press Warmer pad to decrease Max Frz duration by and negative are shown by indicator light 9; light glows 4 hours.

to show negative value 3. Press Colder pad to increase Max Frz duration by 4 hours. . Add together all lit indicators

Indicator VaVluaelwuhen 1 through 4 according to their 8 values to obtain ten’s column 1 4 digit. Example if 3 and 4 are lit 2 2 the tens column total 3 (2 + 1 3 1 = 3) 4

Add together all lit indicators 5

5 8 through 8 according to their values to get one’s column 6 4 digit. Example if 6 and 7 are lit the one column total 6 (4 + 2 7 2 = 6). The ex ample temperature is 36º F. w ith coldest indicator 8 1 not lit.

Coldest +/-

3 6 Degrees F.

Freezer Thermistor Temperature 1. Choose freezer thermistor temperature display by

pressing Freezer Temp pad.

2. Freezer thermistor temperature displays.

Refrigerator Thermistor Temperature 1. Choose Refrigerator thermistor temperature display

by pressing Ref Temp pad.

2. Refrigerator thermistor temperature displays.

September 1999 13 12074212

Program Mode

Temperature Offset Calibration Exiting Program Mode Offset amount adjusts temperatures for refrigerator cut- ins and cut-outs by the amount of offset. The chart Press Display On pad for 3 seconds to exit Program below shows the indicator and the amount of offset from Mode. Tone will sound three times. Changes made in the factory default setting. Program Mode will be permanently saved in EEPROM.

INDICATOR OFFSET Note: If no pad is pressed for 10 minutes, Program 1 +8 Mode will be automatically exited. However, no 2 +6 changes will be saved if Program Mode exits 3 +4 automatically. 4 +2 5 0 6 -2 7 -4 8 -6 -8 Coldest

• Setting Refrigerator Temperature Offset

Press Ref Temp pad. Refrigerator indicator and one indicator will glow. Press Warmer pad to move offset to the next warmer setting. Press Colder pad to move offset to the next colder setting. Factory default refrigerator offset is -4.

• Setting Freezer Temperature Offset

Press Freezer Temp pad. Freezer temperature indicator and one indicator will glow. Press Warmer pad to move offset to the next warmer setting. Press Colder pad to move offset to the next colder setting. Factory default freezer offset is 0.

Defrost Mode Selection Toggle Vacation pad to select adaptive or conventional defrost mode. Vacation indicator glows when adaptive defrost has been selected. If vacation indicator is off, conventional defrost is selected. Conventional defrost uses 8 hour CRTD value.

Forced Defrost Defrost can be forced to start by pressing and holding the Alarm Off pad for 3 seconds. Program changes will be saved permanently in EEPROM and program mode will exit to Run Mode.

Forced Pulldown (Compressor Start) Compressor start can be forced by pressing and holding Max Frz pad for 3 seconds. Program changes will be saved permanently in EEPROM. Compressor, evaporator fan, and condenser fan will come on.

12074212 14 September 1999

Electronic Testing

Electronic Testing Mode

Forced Defrost Start 1. Press Display On pad to activate control panel.

2. Simultaneously press and hold Max Ref and Display Off pads for 3 seconds.

Forced Compressor Start 1. Press Display On pad to activate control panel.

2. Simultaneously press and hold Max Frz pad and Display Off pad for 3 seconds.

Open Thermistor Detect

Alarm sounds and freezer or refrigerator indicator light shows and temperature indicators 4 through 7 will turn on in sequence if either thermistor circuit opens. Refer to Temperature Control Operation Section and Electronic Testing Section.

1. Press Alarm Off pad to turn off alarm.

2. Alarm will retest for normal operation. If condition has not been corrected, alarm will sound again.

September 1999 15 12074212

Electronic Functional Description

WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to refrigerator using power switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure correct earthing and polarization. After servicing, reconnect power using power switch.

Ground

Line Voltage (L1) Transformer Neutral (L2)

Freezer Door Open

9 30 9

Refrigerator Door 10 0-29 8-0 3 Open RE F-A MP-0 3 SN. 2307 Defrost Heater 1 06 27 30 1 Defrost Heater Relay Defrost Terminator Capacitor Comp./Cond. Fan Power Switch

E3 12 Pin Connector September 1999 Comp./Cond. Fan Relay

K1

Evaporator Fan Evaporator Fan Relay

DC Fans

12074212 16

Electronic Functional Description

WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to refrigerator using power switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure correct earthing and polarization. After servicing, reconnect power using power switch.

Refrigeration and Defrost Component Checks Made at High Voltage Board

Low voltage board input W1 to D11 approximately -25 VDC 120 VAC High voltage board input E10 to E9 (Neutral) or ground approximately

Compressor/condenser fan motor “ON” = E4 to E9 (Neutral) ground approximately 120 VAC “OFF” = E4 to E9 (Neutral) or ground

Compressor/condenser fan motor “CLOSED” = R7 to ground approximately -11 VDC relay “OPEN” = R7 to ground approximately -25 VDC

Evaporator fan motor relay “CLOSED” = R8 to ground approximately -11 VDC “OPEN” = R8 to ground -25 VDC

Evaporator fan motor “ON” = E2 to E9 (Neutral) or ground approximately 120 VAC “OFF” = E2 to E9 (Neutral) or ground 0 VAC

Defrost heater “ON” = E6 to E9 (Neutral) or ground approximately 120 VAC “OFF” = E6 to E9 (Neutral) or ground 0 VAC

Defrost heater relay “CLOSED” = R9 to ground approximately -11 VDC “OPEN” = R9 to ground approximately -25 VDC

Defrost terminator “CLOSED” = E5 to E9 (Neutral) or ground approximately 120 VAC “OPEN” = E5 to E9 (Neutral) or ground 0 VAC

DC fan output voltage from “ON” = E1 to ground approximately -25 VDC high voltage board to fresh food fan “OFF” = E1 to ground 0 VDC or condensate evaporation fan

DC fan input voltage “ON” = R10 to ground approximately -11 VDC Signal to high voltage board from “OFF” = R10 to ground approximately -25 VDC low voltage board for fresh food fan and for condensate evaporation fan

Filament voltage at pins 11 and 12 = less than 5 VAC

Note: D.C. voltages are read from side of resistor which is closest to 12 pin connector.

September 1999 17 12074212

Wiring Schematic

WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to refrigerator using power switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure correct earthing and polarization. After servicing, reconnect power using power switch.

DANGER

High Voltage

12405801 PRINTED IN U.S.A.

12074212 18 September 1999

Wiring Diagram

WARNING

To avoid electrical shock which can cause severe personal injury or death, disconnect power to refrigerator using power switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure correct earthing and polarization. After servicing, reconnect power using power switch.

12045901 PRINTED IN U.S.A.

September 1999 19 12074212

Ice Maker

Specifications

Mold heater: 185 watts, 264 ohms

Thermostat: Close 17 ± 3°F (-8 ± 1°C)

(bimetal) Opens 32° ± 3°F (0°± 1°C)

Water fill: 140 cc, 7.5 sec.

Motor cycle: Stamped in circuit.

Plug in connectors.

One revolution of blades takes

3 minutes plug stall time on ice

(eject and water fill).

Operation Testing Procedures

Thermostat closes when temperature reaches Verify ice maker has power, shut-off arm is down, and 17° ± 3°F (-8.3° ± 1.5°C). Current flows through freezer is cold enough to close bimetal thermostat. thermostat to motor. See “Ice Maker Wiring Diagram”. • Test point L and N will verify 120 volts to ice maker Motor is linked with drive gear. From module, there are copper contacts that ride on copper strips on backside module. of drive gear. As the drive gear rotates, contacts will • Test points T and H will verify bimetal thermostat is make or break a circuit (tract) to the copper strips to operate ice maker. open or closed. All components can be tested without removing ice • Verify test probes go into test points 1/2 inch maker or moving refrigerator away from installation. Remove cover. (1.25 cm). Test points are identified on module: 1. Short T and H with a shunt (insulated 14 gauge wire

N = Neutral side of line with ends stripped back 5/8 inch (1.6 cm) to run motor. If motor runs, replace bimetal thermostat. If M = Motor connection motor does not run, replace module.

H = Heater Connection 2. Leave jumper in for half of revolution. Touch heater mold. If heater mold feels warm, heater is working T = Thermostat connection properly.

L = L1 side of line 3. Remove jumper. Water valve will be energized in last half of revolution if mold heater has not failed. V = Water valve connection

N ! Caution M To avoid ice maker damage do not short any contacts together other than those specified.

V H L T

12074212 20 September 1999

Ice Maker

Module Ohmmeter Checks No Power to Ice Maker and Ejector Blades in End of Cycle Position

Test Points Component Module Position Ohms L – H 264 L – M Mold and heater Attached to support 16,100 Motor Separated from heater

Module Voltage Checks with Meter or Test Light Power to Ice Maker

Test Points Component Line Voltage 0 Volts Power off L – N Module Power on Closed T – H Bimetal Open Off Off L – H Heater On Off

L – M Motor On

N – V Water valve On

Disassembly Procedures

Cover Module, Motor, and Support Assembly 1. Pull water adjustment knob forward. 1. Loosen both screws in module access ports. 2. Disconnect shut-off arm. 2. Snap off cover. 3. Pull mold from support assembly. Remove module only by removing 3 screws and pulling ! WARNING module out of housing. To avoid electrical shock which can cause severe personal injury or death, disconnect power to Shut-Off Arm refrigerator using power switch before servicing. 1. Pull shut-off arm out from white bushing. Wires removed during disassembly must be 2. Replace by pushing completely in. replaced on proper terminals to insure correct 3. Follow steps below. earthing and polarization. After servicing, reconnect power using power switch.

Shut off arm

Adjustment Module and Heater Assembly screw 1. Remove module and support assembly. 2. Install module and support assembly on Mold attachment screw access ports replacement mold and heater assembly.

Fill Cup 1. Remove module and support assembly. 2. Remove ejector blades and shut-off arm. 3. Pull fill cup from mold.

September 1999 21 12074212

Ice Maker

Ejector Blades or Stripper 1. Remove module and support assembly. 2. Install ejector blades, realigning “D” coupling with

module cam.

Accessing Control Box 1. Remove motor and contact assembly from control

box by removing 3 screws. 2. Remove shut-off arm. 3. Pull free.

N Water valve Ejector blade M energized stop position 7.5 seconds 1:30 position V 140 cc fill 11:00 position Start position: thermostat closes,

motor on, heater on

L H

T

Mold and heater screw access ports Thermostat 6:00 position Ejector stall on ice, opens in this motor on ! Caution To avoid main assembly damage do not rotate range and (30 seconds to 5 minutes) blades or drive gear. heater is off 4:00 position

Switches will jam if turned counterclockwise and gears Water Fill Adjustment will be destroyed if turned clockwise. Advance ice maker into cycle by using a jumper to bridge H to R. Ice Turning water level adjustment screw will move contact maker will not run if motor is defective. Shut-off arm in relationship with contact ring segment. This causes must be in on position. contact to vary time water valve is energized. Contact There are several slotted shafts on motor assembly ring is tapered at end of fill time. board. Do not insert screwdriver and attempt to turn shafts. Slots permit assembly only. • Turning screw clockwise decreases fill time. There are nonrepairable and nonreplaceable • Turning screw counterclockwise increases fill time. components in module. When diagnosing or repairing • 1/2 turn equals 20 cc or 1.2 seconds. ice maker, do not remove module unless replacing • Full turn equals 40 cc or 2.4 seconds. module.

12074212 22 September 1999

Ice Maker

! Caution achieve mode temperatures easily. To avoid module damage do not rotate water Thermostat, mold heater, and wiring harness are adjustment screw more than one full turn in replaceable. Any other failure, including motor, requires either direction. replacement of module assembly. Replacement mold assembly comes with new mold heater installed. If water valve adjustment screw falls out, put screw in hole and align as shown below. Thermostat

1. Remove control box from mold by removing screws.

Screws

Water

N adjustment

screw

M

V H 2. Pull front of black housing free of mold. Thermostat L T is on mold side.

Thermostat

When small hole is centered in large hole, water fill adjustment is 7.5 seconds (normal fill time).

Water Problems Retaining clips

Poor water quality can cause ice maker to fail or 3. Grasp 1 thermostat clip and pull out. produce unacceptable cubes. Mineral content or sand 4. Press in new thermostat. Verify pins are properly can restrict screen in water fill valve or particle of sand can keep valve from seating properly. indexed. Electrical assembly does not need to be If water valve does not close, the following could occur: removed. If replacing module, transfer clips to new mold • no ice production support. Use new thermal bonding material.

• small or hollow ice cubes Wiring Harness

• flooding of ice container Remove wiring harness by pressing retaining tab and pulling forward. Install water filter to eliminate bad taste, odor, and visible contaminates. Mineral contact can cause lime build up in mold. Wicking of water over mold and poor cube release can occur. Silicone is applied at upper edges around fill cup and stripper.

Temperature Problems Press tab Freezer temperatures above normal 0° ± 2°F (-18°±1°C) will slow down ice production. Increase ice production by setting freezer to colder setting. Thermostat cycling temperature (1 revolution ice maker) is 17° ± 3°F (-8° ± 1°C). Ice will freeze when these temperatures are achieved. Cycling time will be slower if freezer temperature is not cold enough to

September 1999 23 12074212

Ice Maker

! Caution To avoid property damage, test for water leaks after repair or replacement of water valve. Do not overtighten connection to household water supply.

Water Valve

Water valve has 1 solenoid. Valve has 80 mesh screen water strainer. When tan encapsulated solenoid is energized, the amount of water entering ice maker mold is directly proportional to length of time water valve switch is held closed by timing cam. Inside valve is a flow washer which acts as a water pressure regulator. Proper ice maker fill is 140 cc ±10cc at 7.5 seconds of water fill at an inlet pressure ranging from 20 to 120 PSI (1.4 to 8.2 bar).

Wiring Harness

A nonresettable thermal fuse micro device 170°F (78°C) is spliced into red wire of ice maker wiring harness. Excessive heat can cause no ice production. Replacing wiring harness will only temporarily solve problem. Replace ice maker thermostats.

12074212 24 September 1999

Ice Maker Troubleshooting Chart

No or Low Ice Production

Problem Action

Warm freezer Adjust freezer control or repair

refrigerator

Broken locking tab on vertical cam Replace Ice Maker

Shorted and burned module shut-off Replace Ice Maker

switch and contacts

Stalled or stripped motor Replace Ice Maker

2:30 Ejector Position

Contaminated module. Replace Ice Maker

Motor won’t run when “T” and “H” test

points are shorted.

Open or missing thermostat Replace Ice Maker

No power to ice maker (harness) Determine discontinuity by tracing

power

Jammed cubes Un-jam cubes

Notice size and density of cubes Check fill tube and fill-cup assembly

Frozen fill tube Replace water valve

Kinked water line Un-kink line and check line for weak

sections

Obstructed water line to ice maker or Clear water line

refrigerator

Clogged water valve Replace water valve

No power to water valve Determine discontinuity by tracing

power

Low water pressure Short “T” & “H” test points for 10

seconds.

Remove jumpers. Catch water in

glass.

Increase water pressure to 20 – 120

psi (1.4 – -8.2 bar) 140 cc’s.

Open heater circuit Replace Ice Maker

Closed thermostat Replace Ice Maker

Damaged heater tulips on module Replace Ice Maker

Short heater pins that do not contact Replace Ice Maker

module

Raised shut-off arm Lower shut-off arm to begin cycle

Water or ice in actuator/housing hole Replace Ice Maker

Small or burned housing hole Replace Ice Maker

Large or burred actuator O.D. Replace Ice Maker

Damaged module housing Replace Ice Maker

Deformed shut-off arm Replace shut-off arm

Little or no alumilastic on thermostat Apply alumilastic to thermostat

Housing to mold screws not seated Tighten 2 screws (20-26 in. lb) (22.8-

29.6 cm.kg)

Heater not staked in mold Replace Ice Maker

Incorrect heater temperature Replace Ice Maker

Broken shut-off lever or Replace Ice Maker

mislocated shut-off switch

3:00 Ejector Position

Contaminated Replace Ice Maker

Jammed cubes Un-jam cubes

Notice size and density of cubes

Refrigerator or ice maker not level Level refrigerator or ice maker

September 1999 25 12074212

Ice Maker Troubleshooting Chart

3:00 Ejector Position Continued

Refrigerator or ice maker not level Level refrigerator or ice maker

No power to ice maker Determine discontinuity by tracing

power

Excessive water-fill volume Adjust module screw, lower water

pressure, or replace water valve.

Cubes falling back into mold during Replace fill cup

ejection Check fill tube assembly

4:00 Ejector Position

Contaminated Replace Ice Maker

Thermostat out of calibration Replace Ice Maker

Open heater circuit Replace Ice Maker

Motor should oscillate

Little or no alumilastic on thermostat Apply alumilastic to thermostat

Heater not stacked in mold Replace Ice Maker

Broken locking tabs on vertical cam Replace Ice Maker

6:00 Ejector Position

Contaminated Replace Ice Maker

Insufficient water to ice maker, Refer to “Hollow Ice Cubes”

Small or hollow cubes

7:30 Ejector Position

Contaminated Replace Ice Maker

Motor will not oscillate

Shut-off arm stuck in ice or obstructed Replace Ice Maker

Cubes not formed properly Un-jam

Check fill cup and fill tube assembly

9:00 Ejector Position

Contaminated Replace Ice Maker

Cube frozen to fill cup or mold Un-jam

Replace fill cup and Replace Ice

Maker

12074212 26 September 1999

Ice Maker Troubleshooting Chart

Excessive Ice Production

Problem Action

Shut-off arm not in actuator Replace shut-off arm in actuator

Deformed shut-off arm Replace shut-off arm

Broken shut-off lever or Replace Ice Maker

Lever bypassing vertical cam

Broken module actuator Replace Ice Maker

Hollow Ice Cubes

Problem Action

Low water fill volume Adjust module screw, clear water

path, or replace water valve

Improper freezer air-flow Direct air flow away from thermostat

Thermostat out of calibration Replace Ice Maker

Flooding or Ice in Bucket or Freezer

Problem Action

Thermostat out of calibration Replace Ice Maker

Jammed cube stalled in water-fill Remove cube

cycle Determine reason for stall

Leaky water valve Replace water valve

Excessive water fill volume Replace water valve

Motor stalled in water-fill cycle Replace Ice Maker

(12:00 ejector position)

Contaminated module Replace Ice Maker

Refrigerator or ice maker not level Level refrigerator or ice maker

Excessive water pressure Decrease water pressure (20-120

psi) (1.4-8.2 bar)

Shorted and burned module shut-off Replace Ice Maker

switch and contacts

Broken locking tab on vertical cam Replace Ice Maker

(Stalled in water fill)

Fill-tube not properly positioned in fill Reposition fill tube

cup

Fill cup water opening blocked Replace fill cup

Cubes fall over back of ice maker, Replace fill cup

Melting in freezer

September 1999 27 12074212

Ice Maker Wiring Diagram and Parts Layout

115 220 VAC Red

Ejector Bearing and Inlet Clip-Thermal Fuse Wiring Harness

Ice Stripper

Bracket Screw

Support Shut-Off Arm Screw September 1999 12074212 Ice Maker Cover

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