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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

To check low voltage board, refer to chart on

Page 48.

2. Compress plastic standoffs securing low

voltage board, disconnect wiring and

remove.

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).

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.

Low Voltage Board

Overlay 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.

High voltage board is now accessible.

To check high voltage board, refer to

chart on page 47..

3. Reverse procedure to reinstall.

LV Board

HV Board

Содержание FDSB5481 Series

Страница 1: ... 0020 MAY 2012 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 ...

Страница 2: ...m 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 Ad...

Страница 3: ...fety messages will be preceded by the safety alert symbol and the word DANGER WARNING or CAUTION These words mean IMMEDIATE HAZARDS WHICH WILL RESULT IN SEVERE PERSONAL INJURY OR DEATH Hazards or unsafe practices which COULD result in severe personal injury or death Hazards or unsafe practices which COULD result in minor personal injury or product or property damage All safety messages will identi...

Страница 4: ...A 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 mus...

Страница 5: ...g Model Numbers V C S B 5 4 8 1 S S Viking Professional Series Commercial Built In Side by Side Version 48 Wide Refresh Stainless Serial Numbers 02 15 12 R1000264 Month Day Year of Manufacture Serial Number VIKING RANGE CORP LISTED HOUSEHOLD GREENWOOD MISSISSIPPI 38930 REFRIGERATOR 35NN MODEL MODELE FDSB5421SS 6 25 OZ R134a NUMBER NUMERO SERIAL SERIE 021512R10000264 115 VAC 60 HZ NUMBER NUMERO AMP...

Страница 6: ...wer on off switch is in the ON position after cleaning or changing light bulbs 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 REFR...

Страница 7: ...OL again the Fast Cool will extinguish on the display MAX FRZ Max Frz is enabled by pressing and releasing the ACTIVATE CONTROLS pad and then Pressing and releasing the MAX FRZ tab This causes the control to temporarily factory setting is 6 hours change the current freezer set point to 5o F This set point temperature is not adjustable and is programmed from factory The time duration is adjustable ...

Страница 8: ...tely energize the appropriate outputs in an effort to reach both of the cut out temperatures refrigerator and freezer 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 Def...

Страница 9: ...ered 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 ...

Страница 10: ...r rate hold the pad down 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 fac tory default of 2 hours Press FAST COOL pad A second press will disengage feature MAX RFZ Pad Sets freezer temperature to coldest setting 5o F Factory setting is 6 hours Press MAX FRZ Pad to engage A second press wi...

Страница 11: ... 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 cyc...

Страница 12: ... 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 Board Inverter Power Disconnect Switch High Voltage Board Overlay Switch Upper Grille Assembly Control Panel ...

Страница 13: ... 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 Remove 1 4 screw on each side 3 Remove the grille assembly 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 U...

Страница 14: ...ontrol Panel Removal sections Page 13 2 Disconnect overlay switch from control 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 Overlay Switch 9 Reverse procedure to reinstall 8 The control panel can now be removed and the high voltage and low voltage boards are accessible 7 Remove the two strain relief scr...

Страница 15: ...perate functions of the refrigerator freezer Interaction with the low voltage board is via the ribbon cable attached to the overlay switch Low Voltage Board Overlay 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 On...

Страница 16: ... 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 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 Inverter 1 To access the inverter remove upper air gr...

Страница 17: ...ndenser fan assembly 4 Remove the three 1 4 hex screws holding fan assembly in place remove fan assembly 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 accessi...

Страница 18: ...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 Light Assembly Fan Assembly Ref Thermistor Interior light Water filter ...

Страница 19: ...erify ﬁlament is not broken resistance in the bulb and voltage is supplied to the socket 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 Light Assembly Fresh Food fan cover The Side by Side units uses a fresh food fan to circulate air through the refrigerator compartment The fresh food fan is wired in ...

Страница 20: ...e 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 p...

Страница 21: ... Evaporator Fan Freezer thermistor Defrost heater Drain Pan heater Float Switch 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 ...

Страница 22: ...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 gear...

Страница 23: ... 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...

Страница 24: ...le Ohmmeter Checks No power to icemaker and Ejector blades in end of cycle Test Points Component Module Position Ohms 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 Wat...

Страница 25: ... 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 Freezer Evaporator Fan 1 Remove lower freezer baskets 2 Remove screws securing left and right freezer glides and remove glides Freezer glides 3 Remove right side light lens see interior li...

Страница 26: ...ion 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 3 Pull thermistor into freezer cabinet disconnect wiring repair replace thermistor Freezer thermistor 4 Reverse procedure to reinstall Defrost Heater The unit use a heater to help...

Страница 27: ...minal 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 1 Remove screws securing rear panel and remove rear panel Freezer therm...

Страница 28: ... 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 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 3 Reverse procedure to reinstall Float Switch The unit uses a ﬂoat swit...

Страница 29: ... 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 To avoid risk of electrical shock personal injury or death disconnect electrical power source to unit unless test procedures require power to...

Страница 30: ...isplay 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 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 C...

Страница 31: ...SPLAY OFF once this will result in the display CLF Pressing and releasing HIGHER or LOWER pads will bring the numeric display up pressing and releasing changes in increments of 1 HZ 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 ...

Страница 32: ... Next Press and release HIGHER or LOWER which will result in displaying degrees in Fahrenheit For the refrigerator section this should be set to appropriate value 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 should be set to appropriate value in table below Refrigerator Cut In Model Value 5421 6 5481 6 FRZ T...

Страница 33: ...play Software Version ACTIVATE CONTROLS To exit Mode A and retain any changes made in system up to this point you must press and hold ACTIVATE CONTROLS for 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 a...

Страница 34: ...elease FRZ TEMP pad once the FREEZER indicator will illuminate and the current freezer offset will be displayed along with o F This value should be set to appropriate value in table below Freezer Offset Model Value 5421 2 5481 5 Using HIGHER and LOWER pads adjust value as in illustration below Adjust Refrigerator Temperature Offset Refrigerator temperature offset is a predetermined value based upo...

Страница 35: ...ation While in Mode B press and release MAX REF one time 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 The duration is adjusted using the HIGHER and LOWER pads Adjust FAST COOL duration While in Mode B press and release FAST COOL ...

Страница 36: ...ROLS To exit Mode B and retain any changes made in system up to this point you must press and release ACTIVATE CONTROLS one 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...

Страница 37: ...he display changing to FUL Pressing and releasing HIGHER and LOWER pads will increase or decrease the set point which should be set at 7o F Adjust Freezer Lower Temperature Limit While in Mode C press and hold MAX FRZ and and then hold the LOWER pad for three seconds this will result in the display changing to FLL FRZ TEMP HIGHER LOWER REF TEMP Set Model type While in Mode C press and release eith...

Страница 38: ...lay changing to rLL Adjust Refrigerator Upper Temperature Limit While in Mode C press and hold MAX REF and then press and hold the HIGHER pad for three seconds this will result in the display changing to rUL Adjust Refrigerator Lower Temperature Limit Pressing and releasing HIGHER and LOWER pads will increase or decrease the set point which should be set at 5o F Defrost lockout adder This adjustme...

Страница 39: ...or 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 If you see Pt in the display immediately turn power switch to OFF Turn power back on and start over ACTIVATE CONTROLS To exit Mode C and retain any changes made in system up to this point you must press and release...

Страница 40: ...bove Then pressing and releasing ALARM OFF once will clear the HIGH TEMP off the screen and the zone indicator will stop flashing 2 Open Thermistor Alarm Thecontrollerwillsenseanopenthermistorcondition 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 ...

Страница 41: ...he 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 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 bein...

Страница 42: ...out o F FRZ Cut In o F FRZ Cut out o F 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 TABLE 1 Model types ...

Страница 43: ...er 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 ﬁngers on the light cover Once engaged snap the front ﬁngers 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 Hi...

Страница 44: ...use damage 3 Using a 5 16 head wrench turn the front F adjustment screws to raise or lower the front of the refrigerator 2 Remove upper kickplate screws using a Phillips screwdriver Remove kickplate assembly 3 Remove grille assembly 4 Remove four side screws and remove unit top 5 Loosen the four hinge screws Adjust door 6 Reverse procedure for reinstallation 1 Remove lower kickplate screws using a...

Страница 45: ... Viking Preferred Service 45 Note DO NOT use an electric device Overtightening can cause damage 5 Reinstall kickplate 4 Using a 5 16 head wrench turn the rear R adjustment screws to raise or lower the rear of the refrigerator ...

Страница 46: ...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 sup...

Страница 47: ...ts E12 E11 N A Neutral Out lights E13 E11 115 VAC Aux Heater Dis penser units only E14 E11 115 VAC E11 Ground E1 Refrigerator Condensate Fans E4 Compressor E3 Line In 120 VAC E2 Evaporator Fan E7 Refrigerator Door Switch E8 Freezer Door Switch E9 Neutral L1 Line In 120 VAC E5 Defrost Terminator E6 Defrost Heater E12 Neutral in E13 Light Relay E14 E14 Aux Heater High Voltage Board To avoid risk of ...

Страница 48: ...und See Note 2 below P4 9 Defrost termina tion signal 25 8 vdc 38 vdc ref to chas sis grnd See Note 2 below P4 10 Door signal 25 8 vdc 38 vdc ref to chas sis grnd See Note 2 below P4 11 PS Reference 0 vdc DC P4 12 30 vdc 22 8 vdc 38 vdc ref to chas sis ground See Note 2 below P4 13 Not used AC P4 14 Not used AC P4 15 Light enable relay 17 8 vdc 38 vdc ref to chas sis ground See Note 2 below Low Vo...

Страница 49: ...rd Airﬂow Move control to medium setting Verify proper operation Verify airﬂow is proper Freezer too warm Control setting Door seal Dirty condenser Control board Move control to medium setting Verify closure replace if needed Clean condenser coil Verify operation Freezer too cold Temperature setting Defrost thermostat Control board Move to medium setting Verify thermostat is closing Verify operati...

Страница 50: ...ace water valve depending on type Insufﬁcient water to ice maker with correct ﬁll time Check for restrictions in supply line and valve especially saddle valves 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 ﬁll volume Adjust water ﬁll s...

Страница 51: ...7 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 To avoid risk of electrical shock personal injury or death disconnect electrical power source to unit unless test ...

Страница 52: ...Wiring Diagrams 52 2012 Viking Preferred Service Chart for cable view layout Wiring and Component Testing High Voltage Board ...

Страница 53: ...Wiring Diagrams 2012 Viking Preferred Service 53 Side by Side schematic ...

Страница 54: ...Wiring Diagrams 54 2012 Viking Preferred Service Side by Side Wiring Diagram ...

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