scenario 2 - upper evaporator frosting or freezing up...7. make sure the evaporator fan(s) have no...

Technical TipPreferred Service

Attention: Service Managers

Model(s): Built-In ALL REFRIGERATORS

Subject: Troubleshooting The All Refrigerator

Improvement: Step by step evaluation and corrective actions. 1. Door Alignment Incorrect, Air Intrusion 2. Upper Evaporator Frosting heavily or Freezing Up 3. Lower Evaporator Freezing Up 4.Waterrunningonkitchenfloorfrominsiderefrigerator 5. Warm temperatures, not cooling properly

Viking Service Parts • 1803 Highway 82 West • Greenwood, Mississippi • 38930 (USA) • (800) 914-4799 Techline © 2012 Viking Preferred Service

Date: DEC 2012No: TTR-0006 of 1

Product

Refrigeration

Scenario 1 - All Ref Door Alignment

See TTR-0007 Built-In Viking Refrigerators and Freezer Door Alignment, page 10.

Scenario 2 - Upper Evaporator Frosting or Freezing up

1. Eliminate door sealing as a cause or contributing to this issue by performing previous sequence of steps, All Ref Door Alignment before proceeding.

2. Remove upper evaporator cover and remove all ice or frost using steamer, hair dryer, etc.3. Make sure drain trough below the upper evaporator is clear of any debris and that it is sloped

downward from right to left to promote draining

Drain trough needs to be posi-tioned to cause wa-ter to drain to left

WARNING To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing.

TTR-0006 © 2012 Viking Preferred Service

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4. Is there a foam block covering the thermistor connections? No - Go to step 6 Yes - Go to step 55. Remove connections to thermistor, remove foam block and dry out completely, failure to complete-

ly dry out foam block will cause erroneous temperature control and could cause a reoccurrence of evaporator freezing.

6. Makesurethatterminalendsgoingtothermistorarenotcorrodedandthattheyfittightly.Iftermi-nals are corroded and cannot be cleaned properly, replace the terminals. (Note: corroded termi-nalscanalterthethermistorresistance,causingtemperaturefluctuationsandinextremecasesfreezing up of unit)

7. Make sure the evaporator fan(s) have no ice on them. If there is only one evaporator fan, install kit per TR-0063-SP, ISR-0061 (30”) or ISR-0062 (36”), attached at end of document, to help increase airflowacrosstheevaporatorwithmultiplefans.Iftherearealreadymultiplefans,ensuretheyrunsimultaneously.

8. Turn power back on, put unit in conventional defrost, using TTR-0002 Technical tip, page 15.9. If you are in a high humidity area of the world and the unit has a digital readout, put evaporator

fansinacontinuousonconditiontopromotemaximumevaporationofcondensation,andchangethe refrigerator offset using the following procedures.

ACTIVATECONTROLS

FASTCOOL

HIGHER LOWER

HIGHER LOWER

ProgrammodeAisenteredbyfirstpressing and releasing "ACTIVATE CONTROLS", then press and release "FAST COOL" once and withinfivesecondspressandrelease the following pads in sequence, "HIGHER, LOWER, HIGHER, LOWER" You will hear an audible three beeps and the numeric display will change to "PrA", see illustration below.

Program Mode A

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

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

ACTIVATECONTROLS

Program Mode B

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TTR-0006© 2012 Viking Preferred Service

If you are not already in Mode B, go back to Mode B instructions on previous page.

Once you are in Mode B (Prb in display), press and hold "ALARM OFF" for three seconds and display will change to "PrC", signifying that control is now in Program Mode C, see illustration below.

ALARMOFF

Program Mode C

Constant Evaporator fan mode

While in Mode C , press and hold, "ALARM OFF" for three seconds, the display will illuminate "CEF". Pressing and releasing "ALARM OFF" will toggle this condition "ON and OFF" .

ALARMOFF

Turning this setting on will cause the evaporator fan output to always be on when the door is closed. When the door is opened it will activate/deactivate according to the temperature selected and not having reached cut off. If Sabbath mode is enabled the fan will not shut off. Set to ON to promote better evaporation.

The accomplishment of all of these procedures should resolve your issue, if it does not you either diagnosed the condition incorrectly or missed a step, in the event you still have an issue start over and make sure no steps are

missed.

Go to Program Mode B, see previous page.Change the value to -1 using the following steps.

Change the refrigerator offset

Press and release "REF TEMP" pad once, the "REFRIGERATOR" indicator will illuminate and the current refrigerator offset will be displayed along with oF.

REF TEMP

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

ACTIVATECONTROLS

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 and any changes will be lost.


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Scenario 3 - Lower Evaporator Frosting or Freezing up

1. Eliminate door sealing as a cause or contributing to this issue by performing previous sequence of steps, All Ref Door Alignment before proceeding.

2. Remove upper evaporator cover and check for ice or heavy frost, if there is ice go back to proce-dure two Upper Evaporator Frosting or Freezing Up, if no ice proceed to step 3.

3. Make sure drain trough below the upper evaporator is clear of any debris and that it is sloped downward from right to left to promote draining.

4. Is there ice formed on lower, outer wall in location of lower evaporator ?

No You will need to proceed to the section that describes your malfunctionYESProceedtonextstep.

5. Remove all shelves and drawers from unit.6. Remove meat savor drawer and air ducts.

NOTE: There is no need to remove the slides

7. Remove all ladders and light covers in anticipation of removing back wall.

WARNING To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing.

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8. Remove ice from back wall and lower evaporator area in order to remove back wall.9. Remove light assembly opposite the door hinge by removing screws unplugging wire leads.

10. Removebackwallofrefrigeratortoexposelowerevaporatoranddrainchannelfromupperevaporator.

11. Ensure upper drain trough is inside drain channel, see photos above, if this is not correct water willflowdownbackwallandeitherfreezeorrunoutonthefloorinfrontoftheunit.

12. Like wise ensure drain channel from above is routed into drain channel going to drain pan as seen inphotosbelow,ifthisisnotcorrectwaterwillrunoutonfloorinfrontofunit.


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13. If there was ice coming from above, like along the drain tube, determine cause, like drain out of tube, etc and correct. Ensure that perm a gum is packed properly around any refrigerant lines that go through cabinet to prevent any air intrusion.

14. If the ice is isolated to just the lower evaporator it is possible the refrigerant charge is low, this can be determined in the following set of steps.

• Remove upper grille assembly to gain access to electronics.• Remove control panel and allow it to hang by green wire straps

15. At this point the unit has been turned off for quite awhile with door open, causing internal tempera-turetobeapproximatelyroomtemperature,clampanammeteraroundthesolidbluewirecomingout of the Low Voltage board seen in photos below.

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16. With amp clamp on blue wire turn refrigerator back on and force start the compressor by one of thefollowingprocedures.ThefirstsetofinstructionsareforunitswithBardisplayandthesecondset of instructions are for units with digital display.

ToenterForcedpull-down,firstpressandrelease"ACTIVATECONTROLS",thenpressandhold "LOWER" pad, then press and hold "DISPLAY OFF" pad also until you get an audible con-sisting of three beeps.

Press “ACTIVATE CONTROLS” pad. Press and hold “ALARM OFF” pad and “DISPLAY OFF” pad for 3 seconds.

17. Observe the amp clamp when unit turns on, current goes up to 2.1-1.8 amps and tapers off to about 1.7 and stays there. If amperage goes up to 2.1-1.8 amps but then slowly goes down to about 0.7 amps this is an indication that unit is very low or out of freon. If current remains at 1.7 orsothenthesealedsystemisnotthecause,moveontonextprocedure.Ifthecurrentsteadilydropped off to a negligible amount 0.7 or so then repair sealed system leak and repair.

The lower evaporator is the first stage evaporator and will tend to freeze if low on freon. This is caused by a lack of gas getting to the upper evaporator where the thermistor is located,

causing the unit to run continuously to try and reach set temperature until lower evaporator freezes up.

Youshouldhaveidentifiedthecauseofthelowerevaporatorplateicingupintheprevioussteps,ifyou continue to have an issue, either you missed a step or the malfunction is different and will require further troubleshooting, Start at process number one and continue till you identify the issue.

18. When re-installing meat savor fan, the fan direction is installed from factory blowing right to left. The fan direction should be reversed from left to right to assist in moisture evaporation from lower evaporator plate.

Airflowmustbein this direction, confirmwitharrowon fan


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Scenario 4 - Water running on kitchen floor from inside refrigerator

Water running out the front of unit from inside the cabinet is caused by condensation issues or drain issues.Thereforetheplacetostartisconfirmingthefollowing:

1. Ensure that Scenario 1 - Door Alignment Incorrect, Air Intrusion, is not the cause. In most cases this is the number one cause of condensation forming inside unit and water collecting onbottomofrefrigerator,whichthenrunsoutthedoorontothefloor.

2. The other major cause for this condition is the drain trough not in the drain tube properly at the top or at the bottom, see Scenario 3 - Lower Evaporator Frosting or Freezing up; steps 1 thru 12.

3. Another possible cause would be that the unit has run until the evaporator(s) have frozen up and the unit then warms up and the ice on evaporator(s) starts to melt and water pools in the bot-tom and runs out the door. This would fall under Scenario 2 - Upper Evaporator Frosting heavily or Freezing Up, or Scenario 3 - Lower Evaporator Freezing Up. Go to the appropriate section and repair unit.

Scenario 5 - Warm temperatures, not cooling properly

1. Ensurethatunitissettoanappropriateexpectedtemperature(6or7bars-analogboardor380 F - digital board).

2. Ensure that evaporator(s) are not covered in ice, if they are go to Scenario 2 - Upper Evapo-rator Frosting heavily or Freezing Up, or Scenario 3 - Lower Evaporator Freezing Up.

3. Ensure that there is no condensation forming on inside of unit, especially along the top, this would be an indication of poor door seal, if there is an indication of this go to Scenario 1 - Door Alignment Incorrect, Air Intrusion.

4. If all of the above are not a factor, check the refrigerator thermistor using the following procedure:

• Remove thermistor and place in ice bath (glass of water with ice cubes and water for 10 minutesresistanceshouldmeasure97KΩ,seechartsonnextpageforotherreadings.Ifresistance is incorrect, replace thermistor. If resistance is correct dry thermistor, re-install andgotonextstep.

5. Ensure evaporator fans are running when door is closed and cooling is called for. This can be testedbysettingunittoMaxRefandholdingdoorswitchclosedandobservingfans.Iffansdon’toperateproperlytroubleshootfaultyfancircuit,iffansdooperateproperlygotonextstep.

6. Ifyouhaveverifiedthatallofthepreviousstepsarenotthecauseofwarmtemperatures,thetem-peraturewillonlygetdownto42-46degreesbutdoorsealingisn’tanissueandnoneoftheotheritems previously checked are the cause, the unit may have a slack charge of freon. The only real way to determine this is to recover the current freon, replace the compressor drier and perform a sealed system charge, ensuring the correct amount of freon is installed in unit per serial plate information. NOTE: This is the very last thing that should be tried after all previous efforts have failed to correct the issue.

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Deg F Deg C K-Ohms-24 -31 565-22 -30 531-20 -29 499-18 -28 469-16 -27 441-15 -26 415-13 -25 391-11 -24 368-9 -23 347-8 -22 327-6 -21 308-4 -20 291-2 -19 2740 -18 2591 -17 2453 -16 2315 -15 2187 -14 2069 -13 195

Deg F Deg C K-Ohms10 -12 18512 -11 17514 -10 16516 -9 15718 -8 14819 -7 14121 -6 13323 -5 12625 -4 12027 -3 11428 -2 10830 -1 10332 0 9734 1 9336 2 8837 3 8439 4 8041 5 7643 6 72

Deg F Deg C K-Ohms45 7 6946 8 6548 9 6250 10 5952 11 5654 12 5455 13 5157 14 4959 15 4761 16 4463 17 4264 18 4166 19 3968 20 3770 21 3572 22 3473 23 3275 24 3177 25 30

7. At this point the unit should be repaired, if not you missed something in one of the previous steps, start over at step one of scenario 1 and pay closer attention.


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Model(s): Built-In Viking Refrigerators and Freezers

Subject: Troubleshooting Door Alignment

Improvement: Step by step evaluation and corrective actions. Door Alignment Incorrect, Air Intrusion


Date: SEPT 2012No: TTR-0007Page 1 of 1

Product

Refrigeration

All Ref & Freezer Door Alignment

8. Confirmcabinetislevel,ifnotlevel,adjustusinglevelingpackages,cabinetmustbelevelbeforeproceedingtonextstep.

(76.2 cm)

Place level against refrig-erator cabinet not door in firststepabove,thedoorwill be checked in the sec-ond step. Note: Unit should be levelled left to right and front to back.

9. Confirmdoorislevel,ifnotloosenuppercobrahingeandadjustrightorlefttoobtainalevelposition.

(76.2 cm)

Place level against refrig-erator door, if not level then cobra hinge must be ad-justed, by loosening hinge bolts and moving hinge right or left.

Front of unit

2

1 3

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10. In the following steps a magnet (most technicians carry part of an old door seal magnet) is needed.

11. With door open place magnet section on ref frame, at top on handle side, see illustrations below.

Magnet is placed on breaker strip to show lo-cation of reciprocal mag-net behind breaker strip. There are side charged and face charged mag-nets, if you attempt to use the wrong kind it will revolve on end, either waywillworkinthenextstep. The added mag-net on outside should be centered on breaker strip.

12. Slowly close door and compare the position of gasket to magnet piece you put on breaker frame, see photos.

Magnet

MagnetGasket on inside of door has a magnet inside it, it should line up with the magnet you attached to the breaker strip shown in red. If door gasket is below the magnet, you will not get a seal and you will have warm air intrusion into the cabinet.


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13. If gasket is below the magnet, remove all items from refrigerator door shelves and check again, if gasket now aligns with magnet then you will have to repeat step 2 and adjust the door so that the door gasket rides above the magnet you installed in step 4 above. Put all items back on ref door shelves and check per step 5 again.

Ifyouhaveadjusteddoortothemaximumallowedbyuppercobrahingebutcannotgetenoughheight, determine which is true concerning your situation A (below), or B (Page 4).

Scenario A. Gasket is uniformly below the magnet all the way across the top of the door, see illustrations below.

Gasket is below magnet all the way across the top of the breaker strip by the same amount, in other words door appears to be too low.

Pivot Plate mounted under door

- Raise door assembly by removing Allen screw at door stop and raising cam bushing which will raise door.

Remove door stop pin and plate

Use door stop plate to unscrew bushing to raise door. Take weight off door with 2, two by four boards to make turning bushing easier.

NOTE: Bushing must be turned in 1800 increments

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- if you still cannot raise door high enough for gasket to match breaker frame magnet, you will have to add a spacer(s) between lower pivot plate and door, see procedure below.-Thisshouldeliminatedooradjustmentasbeingtheissue,gotonextstep.

Add spacer (PD040162) between pivot plate and door assembly, this will raise door an additional amount as needed.

14. If door magnet is lined up properly, you need to make sure door assembly itself is not con-caved causingdoornottoseal,seeillustrationbelow,inthisexampletheissueisexaggeratedtoshowthe problem. If this is the problem the top and bottom of door will both have seal issues. If this is your problem then replacement of inner door would be necessary.

Side View of Unit

Not sealing at top

Not sealing at bottom


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Scenario B. Gasket is very close or in the correct position at top on the hinge side of door but is below or far below the magnet at top on the handle side of the door, see illustrations below.

Door appears to be sagging on handle side, illustra-tionisexaggeratedfordisplaypurposes.

- Open door and using a tape measure, record the distance between lower left corner opening and upper right corner (Take the measurement several times to obtain accuracy to 1/16” on tape.) - Repeat procedure measuring from bottom right opening to upper left opening and record measurement to the closest 1/16” (Repeat several times for accuracy.

Magnet

Gasket below magnet

8. At this point if Scenario A was your problem it should be repaired. If Scenario B is your issue and you could not resolve it with the previous set of steps do the following:

- Contact your Viking Regional Service Manager with the following information for additional help resolving this issue,

ONLY AFTER TRYING ALL OF THE PREVIOUS STEPS FIRST.

Customer Name, Address, Phone numberComplete Model and Serial numberDate of purchaseMeasurements made on page 4 to 1/16” accuracyPrevious repair history as you know it.

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Model(s): DDRB / DFFB / VCRB 304,364,530,536 VCRB5301, VCRB5361

Subject: Evaporator icing up on the All Refrigerator

Improvement: Reduce or eliminate icing of evaporator in All Refrigerator by allowing scheduled compressor off time by simulating a defrost cycle.


Date: JUNE 2012No: TTR-0002Page 1 of 1

Product

All Refrigerator

Mode A

1. Press “Activate Controls” pad (far left pad, number 1). Then press “Hidden Button” (number 2, below)

2.Withinsixsecondsofpressingthehiddenbuttonpad,above,pressthe“MaxRef,MaxFrz,MaxRef,MaxFrzinsequenceasshownbelow.

ACTIVATECONTROLS LOWERHIGHER

REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .

3.Anaudibletonewillsoundthreetimes,confirmingthatModeAhasbeenentered.Theorangeled to the right of the “High Temp” indicator will illuminate.


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .

1 2

1

1

2

2

Procedure for DDRB / DFFB / VCRB 304,364,530,536 models


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ModeB

4. Go to Mode B by pressing and releasing ''Activat Controls" one time.


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .

5. Toggle between adaptive defrost and conventional defrost by pressing the hidden button shown below. If the blue led that white arrow is pointing to is lit, the unit is in adaptive defrost, if that blue light is off you are in Con ventional defrost


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .

6. Select conventional defrost as indicated below.


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .

Mode A

7. Return to Mode A by pressing and releasing ''Activate Controls" one time, the display will be as below.


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .

8. Press and hold "Display OFF" for three seconds, 1 audio beep will be heard. The orange light to the right of HIGH Temp will illuminate as in illustration above, with only one bar lit which indicatesdurationbetweendefrostcycles.Usingthehigher/Lowerpadssettofirstbar(4hoursofCRTD).

9. Press and hold ''Activate Controls" for three seconds and you will receive three beeps, signifying that changes have been saved into memory by the low voltage board. This completes the procedure.

Indicator 1 2 3* 4** 5 6 7 8 9Defrost Time

4 hours 5 hours 6 hours 8 hours 12 hours

16 hours

18 hours

20 hours

24 hours

* recommended setting for this setting with an All Refrigerator** factory default setting on board


REF TEMP

MAXREF

ALARMOFF

DISPLAYOFF

. . . . . . . . . . .

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Procedure for VCRB5301 and VCRB5361 models

ACTIVATECONTROLS

FASTCOOL

HIGHER LOWER

HIGHER LOWER

ProgrammodeAisenteredbyfirstpressing and releasing "ACTIVATE CONTROLS", then press and release "FAST COOL" once and withinfivesecondspressandrelease the following pads in sequence, "HIGHER, LOWER, HIGHER, LOWER" You will hear an audible three beeps and the numeric display will change to "PrA", see illustration below.

Program Modes

Program Mode A

FASTCOOL

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

Press the "FAST COOL" pad once to display the current defrost mode. This will result in a display of "Add" for adaptive or "Cnd" for conventional as shown in the illustrations below.

Defrost mode selection

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

Conventional defrost time adjustment (CRTD)

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

Conventionaldefrostmustfirstbeselectedasshown in previous step.

Even though the All Refrigerator doesn't have a defrost system, the board can still be programmed. The unit can be set to conventional defrost in high humidity areas and set for every 4 hours of CRTD. This will cut down on frost issues.

ALARMOFF

Press and hold the "ALARM OFF" pad for three seconds until you hear 3 audible beeps and the display changes to "Cd".


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HIGHER

LOWER

Pressing the "HIGHER or LOWER" pads will result in number of hours being displayed and can be adjusted in one hour increments from 4 hours to 24 hours CRTD interval.

Toexitthistimeperiodadjustmentpressandrelease "ACTIVATE CONTROLS" one time which will result in "PrA" being displayed. You are now back in Mode A.

ACTIVATECONTROLS

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 and any changes will be lost.

Exiting Mode A

scenario 2 - upper evaporator frosting or freezing up...7. make sure the evaporator fan(s) have no...

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