Table of Contents
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Service
Manual
This manual is to be used by qualified appliance technicians only. VIKING
does not assume any responsibility for property damage or personal injury
for improper service procedures done by an unqualified person.
This Base Manual covers general and
specific information including, but not
limited to the following models:
VUWC244DRSS & DLSS
VUWC244CRSS & CLSS
VUWC244FRSS & FLSS
DFUW244CR & CL
DFUW244FR & FL
SMR-0005
October 2010
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Table of Contents
Related Manuals for Viking VUWC244DRSS
Summary of Contents for Viking VUWC244DRSS
- Page 1 Service Manual This manual is to be used by qualified appliance technicians only. VIKING does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person. This Base Manual covers general and...
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Page 2: Table Of Contents
2.1.12 High / Low Temperature Alarm 2.1.13 Power Failure Alarm 2.1.14 Reset Alarms System Operation Defrosts Software Section 3 Refrigeration System 3.1 Basic Unit Configuration 12-13 Servicing Basic Tools 3.4 R-134a Sealed System Low Side Leaks High Side Leaks 2010 - Viking Preferred Service SMR-0005... - Page 3 Divider Assembly & Evaporator Cover 6.1.1 Removal 6.1.2 Installation 6.2 Handle - Removal and Adjustments 6.3 Hinge – Adjust 6.4 Leveling Legs - Adjust 36 Section 7 Electrical Components Fans 7.1.1 Condenser Fan 7.1.1.1 Removal 7.1.1.2 Installation 7.1.2 Compartment Fan 7.1.2.1 Operation 2010 - Viking Preferred Service SMR-0005...
- Page 4 Trouble Shooting Guide 11.1 Problem / Cause / Correction 60-62 Section 12 Reference Photos 12.1 Upper Compartment 12.2 Lower Compartment 12.3 Cabinet Back 12.4 Cabinet Rear Corner 12.5 Front Grille 12.6 Cabinet Front Corner 12.7 Mechanical Assembly 12.8 Mechanical Assembly 2010 - Viking Preferred Service SMR-0005...
- Page 5 12.29 Handle Stand Off 12.30 Door Gasket and Magnet 12.31 Door Divider Seal 12.32 Door Hinge Assembly 12.33 Main Power Board Housing 12.34 Main Power Board Housing 12.35 User Interface Control Box 12.36 User Interface Board 2010 - Viking Preferred Service SMR-0005...
- Page 6 Section 1 Introduction Dual Zone 2010 - Viking Preferred Service SMR-0005...
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Page 7: Unit Specifications
1.1 Unit Specifications Model: VUWC244DRSS, DLSS, CRSS, CLSS, FRSS, FLSS DFUW244CR, CL, FR, FL Cabinet dimensions Height: 33 ¾” Width: 23 7/8” Depth: 23 7/8” Weight: 170 lbs Electrical: 115 VAC / 60Hz Power Cord Length: 7 foot Refrigerant: R-134a - 3.25 ounces Temperature Control: Electronic – TruProtect™... -
Page 8: Installation Tips
This unit requires the use of a grounded outlet. It is recommended that a single circuit receptacle be used for this unit only. Do not use an extension cord with this product. 2010 - Viking Preferred Service SMR-0005... -
Page 9: Interior Components
1) Remove the top two shelves of the compartment to access the light assembly. 2) Disconnect the lights electrical plug where it plugs into the cabinet liner. 3) Remove the two hex head screws that fasten the fixture in place. 4) Remove and replace with new assembly. 2010 - Viking Preferred Service SMR-0005... -
Page 10: Section 2 Dual Zone Characteristics
Section 2 Dual Zone Characteristics 2010 - Viking Preferred Service SMR-0005... -
Page 11: Introduction: Truprotect™ Control Features
It is important to note that variations of display temperature will appear due to certain factors. A couple of examples would be the amount of door openings, and length of time into either an “off” or “defrost” cycle. 2010 - Viking Preferred Service SMR-0005... -
Page 12: Setting The Display Temperature
F/C keypad. When the P-O-R has been preformed, press the light keypad, an audible beep will sound, and the blue LED on the light keypad will turn on. The compartment lights will remain on for a maximum of 15 minutes. After 15 minutes the compartment lights will time-out and shut off. However the blue LED light on the 2010 - Viking Preferred Service SMR-0005... -
Page 13: Black Out Mode
To reset the Door Alarm, simply close the door of the unit. For all other alarms press the “On/Off” keypad. Although the alarms have been reset, the alarm will still resume if the condition has not been corrected. 2010 - Viking Preferred Service SMR-0005... -
Page 14: System Operation
The dual zone wine cellar does not incorporate either an electric heater or hot gas method for defrost. Depending on the software version (See following page), defrost is achieved by utilizing additional com- pressor off time at the conclusion of a predetermined, accumulated run time period. These parameters have been programmed into the User Interface board and can not be changed or re-programmed. 2010 - Viking Preferred Service SMR-0005... -
Page 15: Software
Firm Ware Soft Ware Compressor off time Accumulated run time 20 Minutes 12 Hours 20 Minutes 5 Hours 25 Minutes 5 Hours 30 Minutes 5 Hours NOTE: All part orders will receive software version 1.9 2010 - Viking Preferred Service SMR-0005... -
Page 16: Section 3
Section 3 Refrigeration Systems 2010 - Viking Preferred Service SMR-0005... -
Page 17: 3.1 Basic Unit Configuration
3.1 Basic Unit Configuration 2010 - Viking Preferred Service SMR-0005... -
Page 18: 3.1 Basic Unit Configuration
3.1 Basic Unit Configuration cont. 2010 - Viking Preferred Service SMR-0005... -
Page 19: Servicing
Whenever possible it is best to perform all system repairs at the service center rather then the customer’s home. Always have proper ventilation using a torch when disconnecting soldered joints. It is not un- common to have some oil flash when the copper tubes are heated and separated. Always wear protective safety glasses and gloves when working on any Viking product. Basic Tools Needed for R-134a Service & Repair Manifold gage Hoses with couplers... - Page 20 This prevents the migration of mineral oil vapor into the R-134a / Ester oil system. If the vacuum pump should stop during evacuation, the hand valve must be closed immediately. Insure that all refrigeration hoses are specified for use with R-134a refrigerant. Research has shown that compounds in standard refrigeration hoses may enter the sealed systems and eventually restrict the capillary tube. 2010 - Viking Preferred Service SMR-0005...
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Page 21: Sealed System
In the case that the capillary tube has been restricted or kinked a new evaporator will also be sup plied as a sub-assembled piece. Low Side Leaks As mentioned above it is recommended that the compressor and filter / drier be replaced if moisture has been drawn into and contaminated the system. After repair, dry nitrogen should be flushed through the system before the unit is evacuated and recharged. High Side Leaks It is not necessary to replace the compressor with a high side leak however the filter / drier should be replaced. Once again after the leak has been repaired, flush the system with dry nitrogen before evacuat- ing and re-changing the unit. 2010 - Viking Preferred Service SMR-0005... -
Page 22: Restricted Capillary Tube
With the pinch off tool in place, remove the valve and solder the pierced hole shut. At this time remove the pinch off tool and check for leaks with the system off. 2010 - Viking Preferred Service SMR-0005... -
Page 23: Refrigerant Recovery
300 PSI when flushing a system. To flush the system, remove the compressor and filter / drier from the system. The condenser, evaporator, and capillary tube should all be flushed independent from each other. Before flushing, a process adaptor needs to be placed on one end of the component being flushed. Place a rag over the opposite end to catch any oil or particles removed when flushed. Slowly open the valve on the nitrogen tank to begin. Once started, the valve can be opened further. CAUTION: IF REFRIGERANT IS USED AS A MEANS OF FLUSHING - IT MUST BE RECOVERED 2010 - Viking Preferred Service SMR-0005... -
Page 24: System Evacuation
If the vacuum pump can not achieve a good vacuum in a reasonable amount of time, or the low side gauge looses its vacuum (step 8 above) a leak is present. At this time add a small amount of charge into the system and check for leaks. 2010 - Viking Preferred Service SMR-0005... -
Page 25: Charging The System
Open the charging cylinder valve slowly and watch the sight glass on the Dial-A-Charge. When the charge is reduced to the calculated level on the Dial-A-Charge scale, the correct amount of charge is in the system. Close charging valve on Dial-A-Charge. Example: 1) Dial-A-Charge liquid level is 15 ounces. 2) Viking Dual Zone requires 3.25 ounces of charge. 3) 15 oz - 3.25 oz = 11.75 oz. 4) 11.75 ounces will be the liquid level on the Dial- A-Charge when the Dual Zone has obtained its proper charge. Turn on unit and let compressor run for a few minutes. Monitor system pressures and the temperature of lines with your hand. -
Page 26: Alternate Method
When the predetermined weight has been reached the valve can be shut off. 3.14 Leak Test System Using a leak detector: Check the high side with the compressor running. Check the low side with the compressor off. 2010 - Viking Preferred Service SMR-0005... -
Page 27: Truprotect™ Control Diagnostics
Section 4 TruProtect™ Control Diagnostics 2010 - Viking Preferred Service SMR-0005... -
Page 28: Diagnostics Mode
Note: n/a on chart means that component must be turned off/on to check performance To exit the diagnostics mode repeat the above process or let the User Interface time out of the mode after five (5) minutes of no keypad functions. 2010 - Viking Preferred Service SMR-0005... -
Page 29: Error Codes
Reset” is accomplished by unplugging the wine cellar momentarily at the power supply or by resetting its circuit breaker. If the error code persists, component is faulty and requires service. Please refer to the trouble shooting section of this manual for additional information. 2010 - Viking Preferred Service SMR-0005... -
Page 30: Mechanical System Components
Section 5 Mechanical System Components 2010 - Viking Preferred Service SMR-0005... -
Page 31: Access To Mechanical Base Plate
6” maximum. Doing so may kink any or all of the following: discharge line at the compressor, suction line at the compressor, suction line as it exits the rear of the cabinet. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES Mechanical baseplate 2010 - Viking Preferred Service SMR-0005... -
Page 32: Compressor
6” maximum. Doing so may kink any or all of the following: discharge line at the compressor,suction line at the compressor, suction line as it exits the rear of the cabinet. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 33: Installation
Replace compressor electrical cover and snap into place. Carefully slide mechanical base plate assembly back under cabinet. 14) Screw mechanical base plate assembly to cabinet (See figures 12.4 and 12.6). Evacuate, change, and leak check system. 16) Replace front grille (See figure 12.5), back panel and power cord grommet (See figure 12.3). SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 34: Condenser
Remove the condenser fan shroud. Install sealed system access valves and recover refrigerant. After recovery, cap off valve. Heat joints and remove filter / drier. 10) Heat joints and remove the discharge and liquid lines at the condenser. 11) It is advisable that the un-soldered copper tubes be capped if the system will be exposed to the atmosphere for any length of time. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 35: Installation
Install and solder the discharge and liquid lines to condenser. Install new filter / drier. Install the condenser fan assembly. Carefully slide mechanical base plate assembly back under cabinet. Screw mechanical base plate assembly to cabinet (See figures 12.4 and 12.6) Evacuate, change, and leak check system. Replace front grille (See figure 12.5), back panel and power cord grommet (See figure 12.3). SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 36: Evaporator
Install sealed system access valves and recover refrigerant. After recovery, cap off valve. 8) Remove liquid and capillary lines from filter / drier. Disconnect suction line from compressor. Remove evaporator, suction line, and capillary tube assembly from the unit. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 37: Installation
Install and solder the suction line into compressor. Carefully slide mechanical base plate assembly back under cabinet Screw mechanical base plate assembly and front grille to cabinet (See figures 12.4, 12.5, and 12.6). Evacuate, change, and leak check system. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 38: Structural Components
Section 6 Structural Components 2010 - Viking Preferred Service SMR-0005... -
Page 39: Divider Assembly & Evaporator Cover
Step 10: Both supply fans need to be disconnected before the evaporator cover can be removed. To accomplish this bring the left hand side of the evaporator cover forward and reach behind the cover to disconnect the Molex connections to both fans (See figure 12.24). Use the same method previously mentioned to disconnect Molex plugs. Step 11: Remove cover. You now have access to the evaporator assembly (See figure 12.25). SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 40: Installation
SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 41: Handle - Removal And Adjustments
There are a total of four (4) leveling legs, one on each bottom corner of the cabinet. Lift each corner separately to adjust individual legs. The bottom of each leg is hex shaped so that an adjustable wrench or channel-lock pliers could be used if necessary to adjust height. Leveling legs on a new unit are finger tight and can be adjusted without the use of a tool. Turning the leveling legs clockwise will raise the height while counter-clockwise will lower the adjustment. It is recommended placing a bubble level on the cabinet top to check for side to side and front to back levelness. 2010 - Viking Preferred Service SMR-0005... -
Page 42: Electrical Components
Section 7 Electrical Components 2010 - Viking Preferred Service SMR-0005... -
Page 43: Fans
Remove the tinnerman clip from the motor shaft and remove the fan blade and rubber silencer. Remove the fan motor from the bracket. Disconnect the electrical leads. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 44: Installation
A call for cooling in either compartment will energize the fan for that compartment. A call for heat in either compartment will de-energize the fan for that compartment. If the set-point for either compartment has been obtained the fan for that compartment will be de-ener- gized. If a compartment has a call for cooling while the other compartment is satisfied. The compressor and condenser fan will energize. The compartment fan for the call for cooling compartment will energize. The compartment fan for the satisfied compartment will remain off. This will prevent evaporator air from being circulated into the satisfied compartment. However, the heater / fan for the satisfied compartment may energize to heat any cool air which will migrate or con- vect into that compartment. 2010 - Viking Preferred Service SMR-0005... -
Page 45: Replacing
Compressor, Condenser Fan, Compartment Fan, Heater / Fan A call for heating cycle is terminated if the set point is changed to less than 49˚F. If a compartment has a call for heat while the other compartment is satisfied. The compressor and condenser fan will de-energize. The heater / fan for the call for heat compartment will energize. The compartment fan for the satisfied compartment will remain off to prevent the circulation of non- cooled evaporator air from being circulated into the satisfied compartment. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 46: Replacing
After removing the hex head screws, pull assembly away from the liner, reach behind and disconnect at Molex connector. Reverse above steps to replace. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 47: Thermistor
5) Record the resistance value shown on the ohm-meter and determine if it corresponds to the reference chart below. 6) If the resistance value falls outside the resistance values given by 4% or greater, the thermistor needs to be replaced. SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES 2010 - Viking Preferred Service SMR-0005... -
Page 48: Checking Resistance
13.9 57 3.109 31.6 1.556 14.4 58 3.039 32.2 1.524 15.0 59 2.971 32.7 1.493 15.5 60 2.904 33.3 1.463 16.1 61 2.840 33.9 1.434 16.7 62 2.776 34.4 1.405 17.2 63 2.715 35.0 1.377 2010 - Viking Preferred Service SMR-0005... -
Page 49: Replacing Upper Cable
Step 4: Trace thermistor cable to the upper left hand corner to the back wall of lower compartment. Step 5: Place thumb and forefinger on each side of the black Molex plug, squeeze together, and pull away to disconnect. Step 6: Remove and replace thermistor cable. Step 7: Reverse the above procedure to replace the new cable. 2010 - Viking Preferred Service SMR-0005... -
Page 50: Control Components
Section 8 Control Components 2010 - Viking Preferred Service SMR-0005... -
Page 51: User Interface Board
3) After the screw have been loosened, pull the housing forward and let suspend. 4) Reach behind the housing and disconnect the communication and thermistors cables using thumb pressure. 5) Remove the cables from the nylon clips that secure the cables to the control housing. 6) Reverse the above process to re-install. 2010 - Viking Preferred Service SMR-0005... -
Page 52: Main Power Board
DO NOT TOUCH the lower-top half of the main power board when energized. This is the side opposite from cable connections and contains the transformers, heat sinks, and capaci- tors. SEE FIGURE BELOW Do Not Come in Con- tact With This Area When Power is Ap- plied 2010 - Viking Preferred Service SMR-0005... -
Page 53: Removal
When sliding the control housing back in place, some care must be taken not to pinch any wires or cables. These will also restrict the control box from its anchor point if they are not pushed aside when the control housing is slid in place. 2010 - Viking Preferred Service SMR-0005... -
Page 54: Wiring
Section 9 Wiring 2010 - Viking Preferred Service SMR-0005... -
Page 55: Diagram
9.1 Diagram 2010 - Viking Preferred Service SMR-0005... -
Page 56: Communication Cable
9.2 Communication Cable 2010 - Viking Preferred Service SMR-0005... -
Page 57: Main Power Board
9.3 Main Power Board J112 J111 J110 2010 - Viking Preferred Service SMR-0005... -
Page 58: User Interface
9.4 User Interface 2010 - Viking Preferred Service SMR-0005... -
Page 59: Reference Charts
Section 10 Reference Charts 2010 - Viking Preferred Service SMR-0005... -
Page 60: Resistance Temperature Chart
Measure resistance across the two pins on the front end of the thermistor plug Determine ambient temperature at thermistor bulb Cross reference the chart reading at that temperature and compare to actual resistance reading obtained with multi-meter Refer back to Section 7.2.1 for additional information 2010 - Viking Preferred Service SMR-0005... -
Page 61: Pressure-Temperature Chart
24.6 26.1 28.5 30.4 32.5 35.1 40.1 41.7 45.5 46.7 51.2 57.4 57.7 64.1 63.8 71.1 70.2 78.7 86.7 84.2 95.3 91.8 104.3 99.8 124.2 146.4 158.4 171.2 184.6 198.7 213.6 229.2 245.5 262.9 2010 - Viking Preferred Service SMR-0005... -
Page 62: Quick Reference Sheet
10.3 Quick Reference Sheet 2010 - Viking Preferred Service SMR-0005... - Page 63 10.3 Quick Reference Sheet cont. 2010 - Viking Preferred Service SMR-0005...
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Page 64: Trouble Shooting Guide
Section 11 Trouble Shooting Guide 2010 - Viking Preferred Service SMR-0005... -
Page 65: Problem / Cause / Correction
E1 error code along with audible alarm (6 / Compressor wire disconnected. Check wiring. per min.) - Compressor high/low amps Check winding resistance- replace if necessary Faulty compressor. Faulty Power Board Replace board. Faulty overload Ohm and replace if necessary Faulty PTC relay Ohm and replace if necessary. Power surge Reset alarm. 2010 - Viking Preferred Service SMR-0005... - Page 66 Check wire continuity from one end of the com- munication cable harness to the opposite - OL reading means a broken harness - replace. A close visual inspection of all terminal block pins could reveal any broken connections. Check heater continuity - Resistance of heater/ Compartment temperature to cold Bad fan/heater assembly fan assembly should be 7.5 Ohms @70°F. 2010 - Viking Preferred Service SMR-0005...
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Page 67: Problem / Cause / Correction
Upper compartment is not satisfied and lower Upper compartment fan not working. Enter diagnostic mode and check compartment compartment excessively cold. fan operation (See section 4.1). Refer to Sections 7.1.2, 7.1.2.1, and 7.1.2.2 if diagnostics show fan is not operating. 2010 - Viking Preferred Service SMR-0005... -
Page 68: Reference Photos
Section 12 Reference Photos 2010 - Viking Preferred Service SMR-0005... -
Page 69: Upper Compartment
View of Upper Compartment Control box User interface and display Serial plate Wood shelf trim Compartment divider Figure 12.1 View of Lower Compartment Wood shelf trim Condenser air intake Condenser air baffle Condenser air exhaust Front grille Figure 12.2 2010 - Viking Preferred Service SMR-0005... -
Page 70: Cabinet Back
Slotted area, do not re- move screws Figure 12.3 Grommet View of cabinet back corner Remove screws to loosen mechanical base. 1 screw is located at each lower corner in back of cabinet Figure 12.4 2010 - Viking Preferred Service SMR-0005... -
Page 71: Front Grille
2010 - Viking Preferred Service SMR-0005... -
Page 72: Mechanical Assembly
2010 - Viking Preferred Service SMR-0005... -
Page 73: Compressor Electrical Cover
View of compressor electrical cover Removing compressor electrical cover Figure 12.9 View of compressor electricals Run capacitor Overload Relay Figure 12.10 2010 - Viking Preferred Service SMR-0005... - Page 74 2010 - Viking Preferred Service SMR-0005...
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- Page 82 To reinstall make sure there is a small piece of tape holding the divider assembly together. Figure 12.26 View of upper divider top A 6” putty knife will aid when installing the divider. Figure 12.27 2010 - Viking Preferred Service SMR-0005...
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Page 83: Handle Stand Off
View of handle stand-off Handle Stand-off Set screw Figure 12.28 Front view of handle stand-off mounting stud Stand-off stud Phillips head screw Figure 12.29 2010 - Viking Preferred Service SMR-0005... - Page 84 2010 - Viking Preferred Service SMR-0005...
- Page 85 View of top hinge door assembly Hinge Hinge pin Hinge Adapter Figure 12.32 View of main power board - front grille Front grille re- moved Main power board inside control box Screws securing power board housing Figure 12.33 2010 - Viking Preferred Service SMR-0005...
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