Viking DEDO127T Service Manual

Electric touch control ovens

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Brochure (52 pages)

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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.

Electric Touch

Control Ovens

This Base Manual covers general and

specific information including, but not

limited to the following models:

DEDO127T

DEDO130T

DEDO527T

DEDO530T

DESO127T

DESO130T

DESO527T

DESO530T

VEDO127T

VEDO130T

VEDO527T

VEDO530T

VESO127T

VESO130T

VESO527T

VESO530T

SMC-0004

July 2008

Table of Contents

Summary of Contents for Viking DEDO127T

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. Electric Touch This Base Manual covers general and...
Page 2: Important Information
CAUTION messages will be preceded by a safety alert symbol and the word “DANGER”, “WARNING” or “CAUTION”. VIKING will not be responsible for any injury or property damage from improper service DANGER procedures. If performing service on your own product, you must assume responsibility for any...
Page 3: Specifications
(12) months from the date of original retail purchase. Viking Range Corporation, warrantor, agrees to repair or replace, at its option, any part which fails or is found to be defective during the warranty period.
Page 4: Warranty Information
Warranty Information WARRANTY SERVICE Under the terms of this warranty, service must be performed by a factory authorized Viking Range Corporation service agent or representative. Service will be provided during normal business hours, and labor performed at overtime or premium rates shall not be covered by this warranty.
Page 5: Table Of Contents
7. Run all Upper Oven Tests…………… .. Schematic – Double Oven - Select model…… 8. Run all Lower Oven Tests……………… Schematic – Double Oven –Premiere model… 9. Individual Keyboard Tests……………. CYCLE CHARTS Bake………………………………………… Broil………………………………………… TruConvec™……………………………………… 31 Description Page © 2008 Viking Preferred Service...
Page 6 50 Amp. 30 Amp. Connection Connection Connection Connection Connection Connection Connection Connection Max Amp. Usage Bake Rating 3000 Watts 3000 Watts Broil Rating 4000 Watts 3500 Watts TruConvec 3000 Watts 3000 Watts Rating Heating element information © 2008 Viking Preferred Service...
Page 7: General Information
Model - Serial number matrix The model number and serial number are located on the data plate. The data plate is located on the top left side of the oven cavity under the control panel. © 2008 Viking Preferred Service...
Page 8 General information Model Numbers Serial numbers The model and serial number tag is located on the underside of the control panel. FIG A shows the location. FIG A © 2008 Viking Preferred Service...
Page 9: Control Panel
(Double oven models). In order to operate the oven, touch either the upper or lower oven touch pad. The Viking Built-In Touch Control wall oven is available in two versions. The Select and Premiere ovens are identical with the exception of optional functions on the Premiere model. Below are both the Select the Premiere double oven models.
Page 10 4. You will hear 3 short beeps. The control panel will now be locked. To deactivate panel lock: 1. Press and hold either the UPPER or LOWER oven pads for 3 seconds. 2. You will hear 2 short beeps and the display will read “PANEL IS UNLOCKED” © 2008 Viking Preferred Service...
Page 11: Convection Bake
Please refer to the individual relays on the relay board to control both operating matrix on page 32. the preheat cycle as well as the cook cycles. Please refer to the operating matrix on page 31. © 2008 Viking Preferred Service...
Page 12: Convection Broil
The main control board will operate the individual relays on the relay board to control both the preheat cycle as well as the cook cycles. Please refer to the operating matrix on page 33. Defrost © 2008 Viking Preferred Service...
Page 13: Meat Probe
Error Screens The T Series oven will display any errors detected by the microprocessor. There are 8 built in error codes. When activated, the oven will NOT function. © 2008 Viking Preferred Service...
Page 14 The meat probe is open or shorted. RELAY ERROR LATCH ERROR 12:10 PM RELAY ERROR 12:10 PM LATCH ERROR No relay board connection The control is unable to lock or unlock the door latch. KEYBOARD ERROR 12:10 PM KEYBOARD ERROR © 2008 Viking Preferred Service...
Page 15: Accessing The Diagnostic Program
8 – 4 – 5 – 4 – 6 – 4 (V-I-K-I-N-G). When you have successfully entered in the code, the display will change and read “RUN ALL TESTS”. You are now in the diagnostic mode. © 2008 Viking Preferred Service...
Page 16: Run All Tests
Hit the “SET” button to view this information. Please turn to page 22 for the test procedure. Use the Down arrow to access the next test (Individual display test) or the UP arrow to access the previous test (Run all tests). SETTINGS: TESTS Product information © 2008 Viking Preferred Service...
Page 17: Individual Display Tests
“SET” button to test these individual components. Please turn to page 25 for the test procedure. Use the Down arrow to access the next test (Individual keyboard tests) or the UP arrow to access the previous test (Individual upper oven tests). SETTINGS: TESTS Individual lower oven tests Individual keyboard tests © 2008 Viking Preferred Service...
Page 18: Individual Lower Oven Tests
Use the Down arrow to access the next test (Run all keyboard tests) or the UP arrow to access the previous test (Run all upper oven tests). SETTINGS: TESTS Run all lower oven tests Run all keyboard tests © 2008 Viking Preferred Service...
Page 19: Run All Lower Oven Tests
Hit the “SET” button to begin this test. Please turn to page 29 for the test procedure. SETTINGS: TESTS Run all keyboard tests Use the UP arrow to access the previous test (Run all lower oven tests). © 2008 Viking Preferred Service...
Page 20: Bake
Upper Door Lock Door lock motor is advanced Door must lock to advance Upper Door Unlock Engage door lock to UNLOCK door Door must unlock to advance On Premiere models only! Continued on page 21 © 2008 Viking Preferred Service...
Page 21: Broil
Press the RECIPES key Pressing the Recipes key will advance to next test PREMIERE MODELS Press the CLOCK key Pressing the Clock key will advance to next test SELECT MODELS On Premiere models only! Continued on page 22 © 2008 Viking Preferred Service...
Page 22: Product Information
Press the Enter key to go to the next test In this screen you will see the model, version and serial number of the microprocessor. To exit this test, select the ENTER, CLEAR Down arrow ( ) key. © 2008 Viking Preferred Service...
Page 23 STEP To test: TEST RESULT To exit: Display all dots and segments All digits in the display will light up ENTER. CLEAR or Clear screen All digits in the display will extinguish ENTER. CLEAR or © 2008 Viking Preferred Service...
Page 24 ENTER. CLEAR or Door lock state Position of door lock switch ENTER. CLEAR or Door Unlock Engage door lock to UNLOCK door ENTER. CLEAR or Door lock state Position of door lock switch ENTER. CLEAR or © 2008 Viking Preferred Service...
Page 25 Position of door lock switch ENTER. CLEAR or Door Unlock Engage door lock to UNLOCK door ENTER. CLEAR or Door lock state Position of door lock switch ENTER. CLEAR or Not available on Select double oven models © 2008 Viking Preferred Service...
Page 26 When you depress the Defrost keypad you should hear a confirmation tone and the display will extinguish. This indicates that that particular keypad is working properly. If there is no response to the touch, then a defective touch board is indicated. © 2008 Viking Preferred Service...
Page 27 Check upper cavity lights ENTER, Upper Door Lock Door lock motor is advanced Door must lock to advance Upper Door Unlock Engage door lock to UNLOCK door Door must unlock to advance On Premiere models only! © 2008 Viking Preferred Service...
Page 28 Check upper cavity lights ENTER, Lower Door Lock Door lock motor is advanced Door must lock to advance Lower Door Unlock Engage door lock to UNLOCK door Door must unlock to advance Premiere models only! © 2008 Viking Preferred Service...
Page 29 As you press the designated key, a successful input will be followed by a tone and the display will prompt the user as to the next keypad to depress. To begin the test, select either the SET or ENTER key. © 2008 Viking Preferred Service...
Page 30: Auto Roast
1 sec intervals, individual elements duration and in which phase it is operable. Each preheat phase will repeat itself until the maximum temperature shown for each preheat phase is achieved. Bake cycle chart © 2008 Viking Preferred Service...
Page 34 Diagnostics Convection Bake cycle chart NOTE: Convection fan is running at LOW speed Convection Broil cycle chart © 2008 Viking Preferred Service...
Page 35 Diagnostics NOTE: Convection fan is running at HIGH speed Convection Roast cycle chart NOTE: Convection fan is running at HIGH speed Defrost cycle chart NOTE: Convection fan is running at LOW speed Dehydrate cycle chart © 2008 Viking Preferred Service...
Page 36 NOTE: Convection fan is running at LOW speed Proof cycle chart ( Premiere models only) Auto Roast cycle chart ( Premiere models only) NOTE: Convection fan is running at HIGH speed Self Clean cycle chart ( Shown in 2 min increments)) © 2008 Viking Preferred Service...
Page 38 Oven Door Interlock Switches Convection Speed Capacitors Door Latch Assembly (Upper) Door Latch Assembly (Lower) Blower Motor (Upper) Blower Motor (Lower) High Temp Cutout (Upper) High Temp Cutout (Lower) Door Hinge Receiver Meat Probe Socket © 2008 Viking Preferred Service...
Page 39 The Single version will have only I relay board. Cooling motor (upper oven) Relay board (Upper oven) Main Control board Convection Relay board speed (Lower oven) capacitors Upper High temp Thermostat 180˚ F N.C. Latch assembly (upper oven) Shown with access cover removed © 2008 Viking Preferred Service...
Page 40 L1 – Blue wire – CW direction – to P3. Lower Broil elements L2 - Yellow wire - to line break relay. L1 –Gray wire –Outer broil – to P6. Lower RTD L1 – Violet wire – Inner broil – to P6. To PU3. © 2008 Viking Preferred Service...
Page 41 Orange wire – To PL2 - Main control board. Green wire – To SW2 and PL2- Main control board. Switch 2 (Rear) Blue wire – To PL2 - Main control board. Green wire – To SW1 and Main control board. © 2008 Viking Preferred Service...
Page 42: Door Removal
Allow the hinges to gently drop into place. Open the door to the full 90˚ position and remove the door pins. Make sure to return them to a safe place should the door need to be removed in the future. © 2008 Viking Preferred Service...
Page 43: Door Interlock Switch
The oven sensor is also known as 1553 a P.T.C (Positive Temperature 1654 Control) device which means that 1754 as the temperature rises, the 1852 resistance increases. 1950 2047 2153 2238 2332 2425 2518 2609 2700 © 2008 Viking Preferred Service...
Page 44: Viking Preferred Service
Replace bake element No Poof (Premiere) Defective relay board Replace relay board Defective Main control board Replace Main control Board Defective oven wiring (shorted, Repair or replace defective open or burned). wiring. See Page 58 © 2008 Viking Preferred Service...
Page 45: Connection
See Page 47-48 Error Code: KEYBOARD ERROR No Connection exists between Check the connections between the P3 Connection on the main control The keyboard and the control board and the Keyboard. board See Page 55 © 2008 Viking Preferred Service...
Page 46: Connection
No Heat or Convection fan. Cavity Defective door interlock switch Check the between the Brown and lights stay on Violet wires in the PU2 (Upper) and PL2 (Lower) connection on the Main Control Board. See Page 61 © 2008 Viking Preferred Service...
Page 47: Connection
375° F, the HI speed relay will engage. When the oven is switched off, the fan will continue to run if the oven cavity is greater than 250° F. When the temp drops below that threshold, the fan will stop running. NOTE: Though the board is capable of producing two speeds, Viking only utilizes one speed. Note: When conducting the diagnostic program you can energize the Fan speed relay (K4) however you will still get only High speed.
Page 48: Connection
The same is true if you were to place your meter leads in Pin (2) White and Pin (3) Black. As you manually spin the fan you will see 0 or 5 volts. Therefore, in any position, one side will read 0 volts while the other will read 5 volts. RTD Sensor © 2008 Viking Preferred Service...
Page 49: Connection
RTD. If the readings are within range, check each wire to ground. If resistance is present, then the RTD is grounded and you will need to check the physical wires for a grounded connection. © 2008 Viking Preferred Service...
Page 50: Connection
4 Philips head screws securing the access cover to the upper plenum base. Remove the two ¼ hex screws to remove the latch and test. FIG D shows the underside of the upper latch. © 2008 Viking Preferred Service...
Page 51 Lower Relay Board CAUTION Hazards or unsafe practices which COULD result in minor personal injury, product or property damage. Be sure to disconnect the power from the oven whenever testing the ovens high voltage circuits © 2008 Viking Preferred Service...
Page 52: Connection
180° F. The 2 gray wires are connected to the relay board at connection P10 as shown in FIG B. To High limiter Continued on page 50 High Limiter (continued) © 2008 Viking Preferred Service...
Page 53: Connection
To test the lower oven limiter, access the lower relay board and unplug the P10 connector. Using a Volt / Ohm meter, apply your meter leads to the two gray wires. If you read an open limiter, replace the component. Meat Probe Place Holder Meat Probe Information Convection Fan Motor © 2008 Viking Preferred Service...
Page 54: Truconvec
Also, try running the motor in both Low and High speed reverse to see if the problem still exists. If the capacitors and relays test ok, then replace the convection motor. Convection Fan Motor (Continued) Low speed operation © 2008 Viking Preferred Service...
Page 55: Rating
The convection circuit utilizes capacitors in its operation which can store a charge for long periods of time. Be sure to discharge the capacitors before servicing the convection components. Convection fan motor operation continued on page 53. © 2008 Viking Preferred Service...
Page 56: Rating
The convection circuit utilizes capacitors in its operation which can store a charge for long periods of time. Be sure to discharge the capacitors before servicing the convection components. Convection fan motor operation continued on page 54 © 2008 Viking Preferred Service...
Page 57 HIGH speed capacitor for HIGH speed reverse operation. CAUTION The convection circuit utilizes capacitors in its operation which can store a charge for long periods of time. Be sure to discharge the capacitors before servicing the convection components. © 2008 Viking Preferred Service...
Page 58: Connection
– Reset line Pin 4 = I ² C – SCL (serial clock) Pin 5 = I ² C – SDA (serial data) Pin 6 = Output – V-Display (+10 Vdc supplied to the Keyboard backlight) © 2008 Viking Preferred Service...
Page 59: Connection
Pin 4 = Output – Ground supplied to the display Pin 5 = Output – Ground supplied to the display Pin 6 = Output – Transmit data to the display Pin 7 = Input – Receive data from the display © 2008 Viking Preferred Service...
Page 60: Connection
The cooling fan for the selected oven however will not operate. A COOLING FAN error will be displayed within 10 seconds. If you receive this error after changing a main Control Board, check to make sure of the proper connections. © 2008 Viking Preferred Service...
Page 61 The Black wire is from the Main Terminal From main terminal block (L2). Place your amprobe on either the black or Block L2 yellow wire to test the draw of the element © 2008 Viking Preferred Service...
Page 62 With the relay closed, L2 is sent to the Inner Broil element. The Inner Broil element draws 10.6 amps. As with the Outer Bake, the K17 line break relay must also close to provide L2 to the Inner Broil element. From Main Terminal To Inner Broil Block L1 element © 2008 Viking Preferred Service...
Page 63: Connection
As with the Outer Broil, the K17 line break relay must also close to provide L2 to the Convection element. To Convection From Main Terminal element Block L1 Note: On the Première Double oven models, the lower oven P7 wire is white w/ green tracer © 2008 Viking Preferred Service...
Page 64: Connection
You should read an open switch. Close the door and you should read 0 Ohms. NOTE: When set to the Sabbath Mode, the lights will not operate when the door is open nor will the heating elements or convection fan motor be interrupted. © 2008 Viking Preferred Service...
Page 65 Wiring and Schematics Wiring Diagram – Premiere Model - Single oven / Double Upper section © 2008 Viking Preferred Service...
Page 66 Wiring and Schematics Wiring Diagram – Select Model - Single oven / Double Upper section © 2008 Viking Preferred Service...
Page 69 Wiring and Schematics Schematic – Select single oven models: DESO 127T DESO 130T VESO 127T VESO 130T © 2008 Viking Preferred Service...
Page 70 Wiring and Schematics Schematic – Premiere single oven models DESO 527T DESO 530T VESO 527T VESO 530T © 2008 Viking Preferred Service...

This manual is also suitable for:

Dedo130t Dedo530t Deso127t Deso527t Deso130t Deso530t ... Show all

Viking DEDO127T Service Manual

Warranty Information

Table of Contents

General Information

Operation

Diagnostics

Cycle Charts

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Summary of Contents for Viking DEDO127T

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