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Component Testing

©2007 Viking Preferred Service

29

Component Description

Test

Procedures

Control board

See Control Board section for
troubleshooting information.

Ice Maker

See Ice Maker section for service
information.

ECM
condenser
motor

Condenser fan moves cooling air across
condenser coil and compressor body.
Condenser fan motor is in parallel circuit
with compressor.

Check resistance across motor. If no resistance
across motor, replace motor.

Evaporator fan
motor

Evaporator fan moves air across
evaporator coil and throughout
refrigerator cabinet.

1.  Disconnect power to unit.
2.  Disconnect fan motor leads.
3.  Check resistance from ground connection

solder. Trace to motor frame must not exceed
.05 ohms.

4. Check for voltage at connector to motor with

unit in refrigeration mode and compressor
operating.

Refrigerator
light switch

Single pole, single throw switch
completes circuit for light when door is
open.

Check resistant across terminals.

Switch arm depressed

•

“NO” terminals Open

Switch arm up

•

“NO” terminals Closed

Freezer light/
Interlock
switch

Single pole, Double throw switch
completes circuit for light when door is
open. Completes circuit for dispenser
when door is closed.

Check resistant across terminals.

Switch arm depressed

•

“NO” terminals Open

•

”NC” terminals Closed

Switch arm not depressed

•

“NC” terminals Open

•

“NO” terminals Closed

Water valve

Controls water flow to the ice maker.
Controlled by thermostat in ice maker.
See Ice Maker section for further
information.

Check resistance across coil windings.

Defrost timer

Timer motor operates only when freezer
control is closed.
After specified amount of actual
operating time, inner cam in timer throws
the contacts from terminal 4, compressor
circuit, to terminal 2, defrost
thermostat/defrost heater circuit. After
specified defrost cycle time, timer cam
resets the circuitry through terminal 4 to
compressor.

1. To check timer motor winding, check for

continuity between terminals 1 and 3 of timer.

2. Depending on rotating position of the cam,

terminal 1 of timer is common to both terminal
2, the defrost mode, and terminal 4, the
compressor mode. There should never be
continuity between terminals 2 and 4.

3. With continuity between terminals 1 and 4,

rotate timer knob clockwise until audible click
is heard. When the click is heard, reading
between terminals 1 and 4 should be infinite
and there should be continuity between
terminals 1 and 2.

4. Continuing to rotate time knob until a second

click is heard should restore circuit between
terminals 1 and 4.

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Содержание DDSF036SS

Страница 1: ...SERVICE NOTEBOOK Side by Side Refrigerators Models VCSF036SS DDSF036SS VCSF036DSS DDSF036DSS VIKING RANGE CORPORATION 111 Front Street Greenwood Mississippi MS 38930 USA 662 455 1200 ...

Страница 2: ...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 Hazards or unsafe practices which COULD result in minor personal injury or product or property damage All safety messages wi...

Страница 3: ...thorized Viking Range Corporation service agency or representative Warranty shall not apply to damage resulting from indoor units being used in outdoor situations This warranty does not apply to commercial usage This warranty does not cover any food or medicine loss due to product failure Warrantor is not responsible for consequential or incidental damage whether arising out of breach of warranty ...

Страница 4: ... 23 Fahrenheit or Celsius Mode 25 Show Room Mode 25 Sabbath Mode 25 Alarm Enable Mode 25 Light Level Mode Select Models 25 Component Testing 26 System Diagnosis 32 Symptoms of an Overcharge 32 Symptoms of Air in System 32 Symptoms of Refrigeration Shortage 33 Symptoms of Low or High Ambient Temperature Installation 33 Heat Load 33 Symptoms of a Restriction 34 Service Procedure 35 Service Equipment...

Страница 5: ...or Removal 50 Evaporator Fan Motor Assembly 50 Evaporator Fan Motor and Fan Blade 50 Defrost Thermostat Removal 50 Defrost Heater Removal 51 Evaporator Removal 51 Ice Maker Removal 51 Freezer Thermistor Removal 52 Condensate Drain Tube 52 Overload Relay Removal 52 Compressor Removal 52 Condenser Fan Motor and Blade Removal 53 Condensate Drip Pan Removal 53 Condenser Removal 53 Front and Rear Level...

Страница 6: ...ur opening smaller than anticipated Some clearance may be gained by using the leveling procedure under Leveling IMPORTANT If refrigerator is to be installed into a recess where the top of the refrigerator is completely covered use dimensions from floor to top of hinge cap to verify proper clearance Leveling CAUTION Use care when leveling the refrigerator to avoid damaging the floor or refrigerator...

Страница 7: ...DOWN button Turn refrigerator off Press the FREEZER TEMP UP button until OFF appears in the display Press the FREEZER TEMP DOWN button to turn back on Max Ice When activated Max Ice reduces the freezer temperature to the optimum setting for 24 hours in order to produce more ice NOTE When the Max Ice feature is in operation the UP and DOWN buttons for the freezer control will not operate Water Filt...

Страница 8: ...ght will illuminate when this feature is activated on the ice and water dispenser select models Activate the Sabbath Mode To access the User Preferences menu 1 Press and hold the DOOR OPEN ALARM button for three seconds NOTE When in the User Preferences mode a short title for the feature will appear in the FREEZER TEMP display and the feature status will appear in the REFRIGERATOR TEMP display 2 U...

Страница 9: ...button will illuminate when the dispenser is locked To Unlock Dispenser Hold the LOCK UNLOCK button for three seconds The green indicator light above button will go out Auto Light The Auto Light function activates the dispenser light at half power when the light sensor detects that the light levels in room are low To Activate Auto Light Press LIGHT button A green indicator light above AUTO illumin...

Страница 10: ...or harsh cleaners Ammonia Chlorine bleach Concentrated detergents or solvents Metal or plastic textured scouring pads Vinegar based products Citrus based cleaners Use warm soapy water and a soft clean cloth or sponge Rinse surfaces with clean warm water and dry immediately to avoid water spots To polish and help prevent fingerprints follow with Stainless Steel Magic Spray Door Gaskets Abrasive or ...

Страница 11: ...trol sounds like an electric clock and snaps in and out of defrost cycle Normal operation Condenser fan makes this noise while operating Normal operation Freezer fan makes this noise while operating Normal operation Air rushing or whirring Freezer fan slows to a stop as the freezer door is opened Normal operation Gurgling or boiling sound Evaporator and heat exchanger refrigerant make this noise w...

Страница 12: ...r food loss Door gaskets are not sealing properly Clean door gasket Humidity levels are high Normal during times of high humidity Water droplets form on outside of refrigerator Controls require adjustment Adjust controls Condenser coils are dirty Clean coils Refrigerator or freezer temperatures are set too high Adjust controls Food temperature is too cold Food is too close to upper left air inlet ...

Страница 13: ...w interior environment to adjust for period the door has been opened Humidity or temperature in surrounding area is high Normal operation Food has recently been added Allow time for recently added food to reach refrigerator or freezer temperature Refrigerator is exposed to heat by environment or by appliances nearby Evaluate your refrigerator s environment Refrigerator may need to be moved to run ...

Страница 14: ... Connecting the Water Supply Copper tubing has kinks Turn off water supply and remove kinks If kinks cannot be removed replace tubing Water pressure is too low Check water pressure requirements Check freezer temperature Adjust temperature Ice bin is not installed properly Check position of ice bin Ice maker is not producing ice Improper water valve was installed See Connecting the Water Supply Wat...

Страница 15: ... minerals in water will form particles when water becomes frozen and melts Particles are not harmful and naturally occur in water supplies No power to unit Check for power at outlet Check fuse box circuit breaker for blown fuse or tripped breaker Replace or reset Faulty power cord Check with test light at unit if no circuit and current is indicated at outlet replace or repair Low voltage Check inp...

Страница 16: ...ty Check fan motor Replace if failed Defrost heater remains open Check defrost heater continuity Replace if failed Defrost control faulty Check control and replace if failed Open wire or connector Check wiring and connections Repair as necessary Frost or ice on evaporator Refrigerant shortage or restriction Check for leak or restriction Repair evacuate and recharge system Loose wire or thermostat ...

Страница 17: ...nit runs continuously Air in system Check for low side leak Repair evacuate and recharge system Unit runs continuously Temperature normal Ice on evaporator Defrost unit Unit runs continuously Temperature too cold Faulty defrost thermostat Check thermostat Replace if necessary Loose flooring or floor not firm Repair floor or brace floor Cabinet not level Level cabinet Tubing in contact with cabinet...

Страница 18: ... Voltage should read 120 VAC Replace dispenser light bulb or Fountain Display Board if voltage reads 120 VAC No 120VAC repair open connection or replace MPCB Failed Main dispenser switch failed short Disconnect power Remove both leads from the switch and measure resistance across switch terminals Resistance should read less than 1 Ω in this position and higher than 10 MΩ when switch is open Replac...

Страница 19: ...oard No 12 VDC replace Fountain Display Board 12 VDC present check for 120 VAC on J1 pin 2 OR YL on MPCB No 120 VAC replace MPCB Cubed LED is illuminated but does not dispense cubed ice when Main dispenser switch is pressed Failed auger motor or PCB With unit powered press the Main dispenser switch Measure voltage on J1 pin 2 OR YL Voltage should read 120 VAC Replace auger motor if voltage reads 1...

Страница 20: ...or a long period Demonstrate reset operation to customer Replace water filter and reset Filter Status Replace MPCB if problem continues Customer education Failed solenoid Disconnect power Remove both leads from the solenoid and measure the resistance across solenoid terminals Resistance should read 101 2 10 Replace solenoid Auger motor operates in Cubed or Crushed mode but ice door chute never ope...

Страница 21: ... not dispense crushed ice when Main dispenser switch is pressed Failed auger motor or MPCB With unit powered press the Main dispenser switch Measure voltage on J1 pin 3 BU WH on MPCB Voltage should read 120 VAC Replace auger motor if voltage reads 120VAC If not replace MPCB Failed Main dispenser switch failed short Disconnect power Remove both leads from the switch and measure resistance across sw...

Страница 22: ...Therm Amb 4 WH YL Therm FZ 5 WH BU Therm FF 6 YL BK OWL 7 DC 8 WH BK Super Cool DC 9 RD BK 12V 10 LT BU Disp Harness MPCB J4 10 pin Connector Configuration Pin Color Signal 1 WH Neutral L2 2 3 BU RD DWP CLS NO TR2 4 YL RD DWP OP NC TR1 5 VT BK FTN LITE TR3 6 OR BK EV FAN 7 BR T STAT RY2 8 BU COMP RY 1 9 RD HOT L1 Harness MPCB J3 9 pin Connector Configuration Pin Color Signal 1 YL WH DISP VALVE Y3 ...

Страница 23: ...e refrigerator door If the new code is incorrect this process should be repeated after closing the refrigerator door The Programming Mode can be exited at any time by closing the refrigerator door or will exit if unattended for four minutes Defrost Operation The Control Board adapts the compressor run time between defrosts to achieve optimum defrost intervals by monitoring the length of time the d...

Страница 24: ... CL closed NOTE By pushing refrigerator door switch you can toggle state from OP open to CL closed Service Test 152 Freezer Door State Will show state of freezer door OP open CL closed NOTE By pushing freezer door switch you can toggle state from OP open to CL closed Service Test 161 Cube Dispenser if equipped Display shows the state of the cube dispenser On or OFF NOTE By pushing actuator pad you...

Страница 25: ...P UP button or DOWN button to toggle between F and C in the refrigerator display Show Room Mode Enter or exit the Show Room Mode by performing the following sequence of events 1 Press and hold the DOOR OPEN ALARM button 2 Press and hold FREEZER TEMP UP button 3 Release the DOOR OPEN ALARM button and wait 3 seconds SH appears in left display 4 Press the FREEZER TEMP UP button again On or OFF appear...

Страница 26: ...it even though compressor has not started for example when attempting to restart after momentary power interruption With open relay compressor will not start because there is little or no current to start windings Overload protection will open due to high locked rotor run winding current With shorted relay or capacitor compressor will start and overload protector will quickly open due to high curr...

Страница 27: ... together If capacitor is used attach capacitor lead to a known good capacitor of same capacity To AC Supply Switch R S Compressor Capacitor Fuses C 9 Plug test cord into multimeter to determine start and run wattage and to check for low voltage which can also be a source of trouble indications 10 With power to multimeter press start cord switch and release If compressor motor starts and draws nor...

Страница 28: ...n line Leaks in condenser can usually be detected by using an electronic leak detector or soap solution Look for signs of compressor oil when checking for leaks A certain amount of compressor oil is circulated with refrigerant Leaks in post condenser loop are rare because loop is a one piece copper tube For minute leaks 1 Separate condenser from rest of refrigeration system and pressurize condense...

Страница 29: ...dispenser when door is closed Check resistant across terminals Switch arm depressed NO terminals Open NC terminals Closed Switch arm not depressed NC terminals Open NO terminals Closed Water valve Controls water flow to the ice maker Controlled by thermostat in ice maker See Ice Maker section for further information Check resistance across coil windings Defrost timer Timer motor operates only when...

Страница 30: ...mpany warranty claim WARNING To avoid death or severe personal injury cut drier at correct location Cutting drier at incorrect location will allow desiccant beads to scatter If spilled completely clean area of beads Evaporator defrost heater Activated when defrost thermostat defrost timer and freezer control complete circuit through heater To check defrost system 1 Thermocouple defrost thermostat ...

Страница 31: ...aks 1 Separate evaporator from rest of refrigeration system and pressurize evaporator up to a maximum of 140 PSI with a refrigerant and dry nitrogen combination 2 Recheck for leaks WARNING To avoid severe personal injury or death from sudden eruptions of high pressure gases observe the following Protect against a sudden eruption if high pressures are required for leak checking Do not use high pres...

Страница 32: ...rost system the refrigerant will flood out and cause the suction line to frost or sweat The cause of this problem should be corrected rather than to purge refrigerant from the system Running the freezer section colder than necessary 2 to 1 F is considered normal package temperatures or continuous running of the compressor for a variety of reasons or the freezer fan motor not running may give the i...

Страница 33: ... full column of liquid As a result there is a noticeable hissing sound in the evaporator This should not be mistaken for the regular refrigerant boiling sounds that would be considered normal Symptoms of Low or High Ambient Temperature Installation Lower ambient air temperature reduces the condensing temperature and therefore reduces the temperature of the liquid entering the evaporator The increa...

Страница 34: ...agnose for a restriction versus a refrigerant shortage discharge the system replace the drier filter evacuate and recharge with the specified refrigerant charge If the unit performs normally three possibilities exist 1 refrigerant loss 2 partially restricted drier filter and 3 moisture in system If the unit performs as it previously did you may have a restricted capillary line or condenser or kink...

Страница 35: ...RY OR DEATH FROM VIOLENT EXPLOSIONS NEVER USE OXYGEN OR ACETYLENE FOR PRESSURE TESTING OR CLEAN OUT OF REFRIGERATION SYSTEMS FREE OXYGEN WILL EXPLODE ON CONTACT WITH OIL ACETYLENE WILL EXPLODE SPONTANEOUSLY WHEN PUT UNDER PRESSURE It is important to check sealed system for refrigerant leaks Undetected leaks can lead to repeated service calls and eventually result in system contamination restrictio...

Страница 36: ...ssor terminals 4 Attach test cord to compressor windings Common lead on test cord attaches to C terminal on compressor Start lead on test cord attaches to S terminal on compressor Run lead on test cord attaches to M terminal on compressor To AC Supply Switch R S Compressor Capacitor Fuses C Attaching Capacitor for Compressor Test 5 Connect a known good capacitor into circuit as shown above For pro...

Страница 37: ...triction on the discharge side of compressor when restriction is between compressor and first half of condenser results in higher than normal head pressure and wattage while low side is being pumped out Testing for Restrictions To determine if a restriction exists 1 Attach gauge and manifold between suction and discharge sides of sealed system 2 Turn unit on and allow pressure on each side to stab...

Страница 38: ...ough line piercing valve 2 Connect low side line to compressor process tube 3 Connect high side line to drier process tube 4 Evacuate both simultaneously With valve C and F closed open all other valves and start vacuum pump Charging Cylinder Charging Hose Charging Hose Drier Process Tube F Valve A B C D Valve E Valve Low Side Gauge Thermistor Vacuum Gauge Vacuum Pump 0 6 cm Copper Tubing Compresso...

Страница 39: ... and braze high side drier process tube closed 8 Recheck for refrigerant leaks Refrigerant Charge Refrigerant charge in all capillary tube systems is critical and exact amount is required for proper performance Factory charges are shown on serial plate NOTE Do not use refrigerant other than shown on serial plate HFC134a Service Information HFC134a is alternative refrigerant for CFC12 HFC134a has a...

Страница 40: ...oils they could accumulate and eventually plug capillary tube Care must be taken to minimize moisture entering HFC134a system Do not leave compressor or system open to atmosphere for more than 10 minutes Excessive moisture in HFC134a system will react with compressor oil and generate acid Compressor must be replaced when performing low side leak repair Drier filter must always be replaced with ser...

Страница 41: ...est during initial pull down Allow one off cycle or balanced temperature condition to occur before proceeding with testing Refrigerator must operate minimum of 20 minutes after thermocouples are installed Turn control to colder to obtain required on time Wattage reading must be recorded in conjunction with temperature test to confirm proper operation Suction and head pressures are listed on Temper...

Страница 42: ... 2007 Viking Preferred Service Refrigerant Flow Compressor Discharge Line Condenser Suction Line Capillary Tube Evaporator Outlet Evaporator Process Tube Process Tube Compressor High Side Drier Evaporator Inlet Flange Loop ...

Страница 43: ...aporator Fan Assembly Evaporator Compressor Condenser Condenser Fan Assembly Refrigerator Air Return Tunnel Air Supply In Foam Refrigerator Air Supply Tunnel To Fresh Food Compartment Controls Large Beverage Chiller Air Supply Some Models Small Beverage Chiller Air Supply Some Models Deli Air Supply ...

Страница 44: ...Service Procedure 44 2007 Viking Preferred Service Water and Ice Dispenser ...

Страница 45: ...ver Rotate cover up and release tabs 2 Remove light bulb 3 Replace bulb with appliance bulb no greater than 40 watts 4 Install light cover Light Switch Removal Condition Requirements Door Opened 1 Use a taped putty knife to carefully pry light switch out of liner 2 Disconnect two wires from the light switch and remove light switch from unit 3 Reverse procedure for installation Electronic Control R...

Страница 46: ...hat hold front of damper in place to release damper from unit 4 Disconnect connectors from damper and remove damper 5 Reverse procedure for installation Refrigerator Thermistor Removal Condition Requirements Electronic Control Removed 1 Remove screw and damper cover from damper 2 Unclip thermistor from assembly 3 Cut wires at thermistor to remove 4 Reverse procedure for installation Crisper Light ...

Страница 47: ...ilter and insert into filter head 4 Rotate gently clockwise until filter stops Snap filter cover closed 5 Flush air from system by running water continuously for two minutes through dispenser until water runs steady Access to Machine Compartment Condition Requirements None 1 Remove seven screws and cover from the unit 2 Remove power cord from cover 3 Reverse procedure for installation Water Filter...

Страница 48: ...connected from water valve in the machine compartment See Water Valve Removal 4 From rear of cabinet pull water tube out of conduit going to dispenser 5 From inside of fresh food compartment pull tubing up and out of cabinet to complete removal of water tank 6 Reverse procedure for installation Water Valve Removal Condition Requirements Access to Machine Compartment 1 Remove two screws and water v...

Страница 49: ...uger motor cover 2 Lift and slide auger motor assembly toward the front disconnect connectors and remove auger motor assembly 3 Reverse procedure for installation Upper Freezer Light Socket Removal Condition Requirements Auger Motor Assembly Removed 1 Disconnect wires from light socket 2 Squeeze retaining tab to release socket 3 Reverse procedure for installation Auger Motor Capacitor Removal Cond...

Страница 50: ...er about two inches and pull complete evaporator motor assembly from freezer 4 Reverse procedure for installation Evaporator Fan Motor and Fan Blade Condition Requirements Evaporator Fan Motor Assembly Removed 1 Remove evaporator fan blade by pulling blade off evaporator fan shaft 2 Remove fan motor by squeezing motor retainer clips together to release retainer 3 Remove retainer and slide motor ou...

Страница 51: ...in Service Procedures before attempting evaporator removal To avoid system contamination do not leave system open for more than 10 minutes 1 Unbraze evaporator coil after completing reclaiming procedures found in Service Procedures section of this manual 2 Release evaporator coil from clips by pulling coil off of clips 3 Reverse procedure for installation Ice Maker Removal Condition Requirements A...

Страница 52: ...irements Access to Machine Compartment 1 Discharge capacitor through a 10 000 ohm resistor 2 Using fingers and standard screwdriver press and pry bale strap off the overload relay capacitor assembly 3 Reverse procedure for installation Compressor Removal Condition Requirements Access to Machine Compartment 1 Remove bale strap which retains overload relay capacitor 2 Pull overload relay capacitor a...

Страница 53: ...ter Valve Assembly Removed NOTE Condensate drip pan may have water in it Wipe up all water prior to removal 1 Bend copper tubing up out of condensate pan to allow removal of condensate pan 2 Reverse procedure for installation Condenser Removal Condition Requirements Condenser Fan Motor Removed Compressor Removed NOTE Condenser is removed by laying unit on its back and requires at least two people ...

Страница 54: ...r 2 When reinstalling door gaskets start at corners pushing dart edge into retainer and seat gasket flush to door Dispenser Light Bulb Removal CAUTION Wear gloves when replacing light bulb Condition Requirements None 1 Locate light bulb inside top edge of dispenser frame and remove bulb 2 Replace light bulb with a 7 watt 120 volt bulb Dispenser Façade Removal Condition Requirements None 1 Remove d...

Страница 55: ...spenser Façade Removed 1 Disconnect switch connector from dispenser board 2 Disconnect ribbon cable from dispenser board 3 Unsnap board from dispenser façade 4 Reverse procedure for installation Dispenser Ice Chute Door and Solenoid Removal Condition Requirements Dispenser Façade Removed 1 Remove dispenser water tube from ice chute assembly 2 Disconnect wires from light socket 3 Disconnect wires f...

Страница 56: ...er tube going to water dispenser 2 Remove dispenser water tube from ice chute assembly 3 Pull water tube up from conduit in cavity to remove water tube 4 Reverse procedure for installation Door and Hinge Removal Condition Requirements None 1 Remove toe grille 2 Remove screw and top hinge cover 3 Disconnect connectors from door 4 Remove screws from top hinge NOTE Do not remove green ground wire fro...

Страница 57: ...o predrilled hole to remove screw 3 Slide handle down and remove from door clip Door Handle Installation 1 Loosen lower door clip on door with a phillips screwdriver 2 Locate predrilled hole at base of handle and fit hollow end of handle over lower door clip 3 Fit other end of handle over upper door clip and slide up as far as possible NOTE If top of handle does not fit over top clip loosen lower ...

Страница 58: ...Appendix A 58 2007 Viking Preferred Service NOTES ...

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