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Thermador Pro Grand PRD304EG Service Manual
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Thermador Pro Grand PRD304EG Service Manual

Thermador Pro Grand PRD304EG Service Manual

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Service Manual for Thermador Pro Grand Dual Fuel Ranges:

TABLE OF CONTENTS

1 General ..................................................................................................... 5
1.1
Applicable Models ......................................................................................... 5
1.2
Data Rating Plate .......................................................................................... 5
1.3
Wiring Diagram ............................................................................................. 5
1.4
Technical Documents to Read Prior to Servicing .......................................... 6
1.5
Recommended Tools and Supplies .............................................................. 6
1.6
Important Safety Information ......................................................................... 6
1.6.1
Safety Symbols Used In This Manual .................................................... 6
1.6.2
Safety Precautions to Know Prior to Servicing....................................... 6
2 Operation.................................................................................................. 9
2.1
Knobs and Controls....................................................................................... 9
2.1.1
Standard Burner Knob ........................................................................... 9
2.1.2
ExtraLow Burner Knob ........................................................................... 9
2.1.3
Griddle Control Knob ............................................................................. 9
2.1.4
Grill Control Knob................................................................................. 10
2.1.5
Temperature Selector Knob ................................................................. 10
2.1.6
Five-Position Oven Function Selector Knob......................................... 10
2.1.7
Six-Position Oven Function Selector Knob .......................................... 10
2.1.8
Oven Lamp Switch............................................................................... 11
2.2
LED Indicators............................................................................................. 11
2.3
Automatic Re-Ignition.................................................................................. 11
2.4
Operation During a Power Outage .............................................................. 11
2.5
Maintop Components and Burner Assembly............................................... 11
3.1
Before Testing............................................................................................. 12
3.2
Rangetop Burner Characteristics ................................................................ 12
58300000157422_ARA_EN_A
PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG
3.3
Rangetop Flame Characteristics ................................................................. 13
3.4
Testing Rangetop Burner Ignition................................................................ 14
3.4.1
Testing Ignition for HI, Medium, and Low Settings............................... 14
3.4.2
Testing Ignition for XLO Setting ........................................................... 14
3.5
Adjusting Grill Burner Flame with the Air Shutter ........................................ 14
3.6
Adjusting Rangetop Burner Valves Manually .............................................. 15
3.6.1
Special Tools Needed .......................................................................... 15
3.6.2
Adjusting the Bypass Screws............................................................... 15
3.7
3.7.1
3.7.2
Ignition Diagnostics for Rangetop Burners........................................... 16
3.7.3
Element Diagnostics ............................................................................ 18
3.7.3.1
Safety Practices for Element Diagnostics ..................................... 18
3.7.3.2
Element Diagnostic Tips ............................................................... 18
3.7.3.3
Element Cycle/Circuit Specification .............................................. 18
3.8
Fault Codes................................................................................................. 19
4 Service and Repair ................................................................................ 21
4.1
Preparing the Range for Servicing .............................................................. 21
4.2
Accessing Components under the Maintop................................................. 21
4.2.1
4.2.2
Removing Spill Trays ........................................................................... 23
4.2.3
Removing Heat Shields ....................................................................... 23
4.2.4
Removing the Burner Support Rail ...................................................... 24
4.3
Griddle Removal and Replacement ............................................................ 26
4.3.1
4.3.2
4.4
Grill Components - Removal and Replacement ......................................... 32
Page 2 of 95

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Summary of Contents for Thermador Pro Grand PRD304EG

  • Page 1: Table Of Contents

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG TABLE OF CONTENTS Rangetop Flame Characteristics ..............13 Testing Rangetop Burner Ignition..............14 1 General ..................... 5 3.4.1 Testing Ignition for HI, Medium, and Low Settings....... 14 Applicable Models ..................
  • Page 2 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.4.1 Grill Flame Spreader Removal and Replacement........ 33 4.5.20 Plunger Switch Removal and Replacement ......... 62 4.4.2 Grill Burner Removal and Replacement..........34 4.5.21 Griddle and Grill Thermostat Removal and Replacement ....
  • Page 3 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 5 Before Returning Appliance to Service..........94 6 Clean-Up ....................95 7 Additional Resources................95 QuickFinder....................95 Technical Support ..................95...

  • Page 4: General

    1.2 Data Rating Plate The data rating plate which shows the model, serial, and FD number Thermador Pro Grand dual fuel ranges may include such features as is located at the bottom of the range behind the kick panel, as shown convection bake and convection broil, a 6-pass / 1630-watt electric in Figure 1.

  • Page 5: Technical Documents To Read Prior To Servicing

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 1.4 Technical Documents to Read Prior to Servicing 1.6 Important Safety Information Before you start servicing, check QuickFinder for all documents and Before starting to service an appliance, familiarize yourself with all information associated with this specific appliance and/or parts.
  • Page 6 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Fire / Explosion Hazards Electrical Hazards ■ Make sure the gas valve at the wall is closed before removing and ■...
  • Page 7 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG In Case of Power Outage Prior to Returning Appliance to Service 1. If for any reason a control knob is on when there is any failure or...

  • Page 8: Operation

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 2. In XLO mode, the knob can be set between SIM and XLO for a OPERATION variable range of low heat (see Figure 3).

  • Page 9: Grill Control Knob

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 2.1.4 Grill Control Knob 2.1.6 Five-Position Oven Function Selector Knob This knob controls the temperature to the grill. Press the control knob For the small oven of 48-inch ranges only, use this knob for bake, and rotate it counterclockwise to the LITE position.

  • Page 10: Oven Lamp Switch

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 2.1.8 Oven Lamp Switch 2.5 Maintop Components and Burner Assembly There is an oven lamp switch for each oven. Figure 9: Oven Light Switch 2.2 LED Indicators...

  • Page 11: Testing, Adjusting, Troubleshooting Burners And Ignition

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG TESTING, ADJUSTING, TROUBLESHOOTING 3.2 Rangetop Burner Characteristics BURNERS AND IGNITION If one or more rangetop burner blows out, the respective igniter electrode automatically re-ignites the flame.

  • Page 12: Rangetop Flame Characteristics

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3.3 Rangetop Flame Characteristics Natural gas: The Star burner flame color should be blue with no yellow on the tips (see Figure 13). It is not uncommon to see orange in the flame color;...

  • Page 13: Testing Rangetop Burner Ignition

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3.4 Testing Rangetop Burner Ignition Ignition Hazard Do not touch the rangetop burners when the igniters are sparking. For each burner, push the control knob in and then turn counter- clockwise to HI.

  • Page 14: Adjusting Rangetop Burner Valves Manually

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3.6 Adjusting Rangetop Burner Valves Manually 3.6.2 Adjusting the Bypass Screws 1. Turn off electrical power by unplugging the power cord, or putting the circuit breaker in the OFF position.

  • Page 15: Troubleshooting Burner, Flame, Ignition, And Elements

     For constant sparking, check wiring connections at ignition (spark) module and electrode, and also check grounding  Refer to the Ignition Diagnostics, page 16.  Call Thermador technical support at (800) 444-9091 for assistance if any burners fail to light, or any burners continue to burn yellow. 3.7.2 Ignition Diagnostics for Rangetop Burners The following flowchart applies in the event a burner fails to ignite.
  • Page 16 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 19: Rangetop Burner Ignition - Diagnostic Flowchart Page 17 of 95 58300000157422_ARA_EN_A...

  • Page 17: Element Diagnostics

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3.7.3.3 Element Cycle/Circuit Specification 3.7.3 Element Diagnostics Use the Element Cycle/Circuit Specification chart for troubleshooting Cavity Cycle (Element/s) Mode Watts...

  • Page 18: Fault Codes

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3.8 Fault Codes When a fault is detected, this appliance will display a fault code (see Figure 23, on page 20). The fault codes are represented by the manner in which two blue LED indicators are blinking.
  • Page 19 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 23: Fault Codes Page 20 of 95 58300000157422_ARA_EN_A...

  • Page 20: Service And Repair

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3. Remove all trim from the maintop (see Figure 24). SERVICE AND REPAIR 4.1 Preparing the Range for Servicing For most servicing of this appliance (for example, involving...
  • Page 21 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. Slowly lift to remove the burner base (see Figure 25, page 21). Caution Fragile Component The igniter plug is a ceramic component that can be brittle and crack easily.

  • Page 22: Removing Spill Trays

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.2.2 Removing Spill Trays 4.2.3 Removing Heat Shields Caution Fragile Component Porcelain enamel spill trays are fragile, so do not over-torque spill tray screws to avoid damaging the porcelain.

  • Page 23: Removing The Burner Support Rail

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4. Using a 9/16th inch wrench, unscrew the hex nut to remove the 4.2.4 Removing the Burner Support Rail other end of the gas tubes from their respective valve as follows: This procedure is for the removal of the burner support rail with the jet ...
  • Page 24 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. Make note of which way the burner support rails are placed on the range chassis before removing, so you can re-install in the correct position in relation to the jet holder assemblies and gas tubes.

  • Page 25: Griddle Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.3 Griddle Removal and Replacement Depending on the model and index number of the range, there are Griddle Hazard two different procedures for the griddle removal that are presented here (the primary differences between them are the brackets used): The griddle plate must always be correctly in place when it is on.
  • Page 26 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 5. For both right-side and left-side brackets (see Figure 39), remove and retain the following two screws: ■ The screw securing the element flange onto the bracket (see Figure 40) ■...
  • Page 27 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 7. Remove the thermostat bulb by carefully pulling it out of the 8. Disconnect the 1/4 inch spade connectors of both (right and left) retaining bracket (see Figure 42).
  • Page 28 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 44: Detaching the Insulation Support Bracket Figure 46: Removing the Insulation 12. Remove the insulation support bracket by pulling its two prongs 10.

  • Page 29: Griddle With Fixed Brackets - Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.3.2 Griddle with Fixed Brackets – Removal and Replacement Fiberglass Wear gloves when handling fiberglass insulation Griddle Hazard The griddle plate must always be correctly in place when it is on.
  • Page 30 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. If the element needs replacing, it snaps out of the fixed brackets 8. Detach the insulation support bracket from under the element tray on the element tray (see Figure 49).

  • Page 31: Grill Components - Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 10. While removing the insulation (see Figure 52), be careful not to 4.4 Grill Components – Removal and Replacement pull on the thermostat bulb.

  • Page 32: Grill Flame Spreader Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4. Remove and retain the screws from the two burner box mounting 4.4.1 Grill Flame Spreader Removal and Replacement brackets (see Figure 55).

  • Page 33: Grill Burner Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 57: Flame Spreader Removed (Grill Burner Shown) Figure 58: Removing the Grill Burner Tab at end of grill burner 4.4.2...

  • Page 34: Grill Hot Surface Igniter Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.4.3 Grill Hot Surface Igniter Removal and Replacement 4.4.4 Grill Electrode Removal and Replacement On the grill, the electrode functions as a flame sensor – that is, if the...

  • Page 35: Grill Thermostat Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.4.5 Grill Thermostat Removal and Replacement The removal and replacement of the grill thermostat requires removing the bulb from the burner box (per this procedure). It also requires removal of the thermostat switch at the control panel (see Griddle and Grill Thermostat Removal and Replacement, page 63).

  • Page 36: Grill Orifice And Elbow Connector Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.4.6 Grill Orifice and Elbow Connector Removal and Replacement 16. From inside the burner box, remove and retain the two screws...

  • Page 37: Removal And Replacement Of Top-Accessible Components

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 17. When installing, be sure the orifice is aligned correctly inside the 4.5 Removal and Replacement of Top-Accessible air shutter section of the grill burner, and that the burner support is Components secured properly onto the tab end of the grill burner (Figure 70).
  • Page 38 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 1. Follow all safety precautions and steps in Preparing the Range for 7. When installing the jet holder, do the following: Servicing, page 21.

  • Page 39: Standard Valve Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. Using a 1/4 inch nut driver or a 1/4 inch socket wrench/ratchet, remove and retain the valve screw (that secures the standard...

  • Page 40: Microswitch Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Gas Leaks With electrical power off, carefully check for gas leaks at each gas component that was removed, replaced, or otherwise serviced using a gas leak detector or bubble test.

  • Page 41: Solenoid Valve For Xlo Burner - Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 10. Use a 1/4 inch nut driver or a 1/4 inch socket wrench/ratchet to 4.5.4 Solenoid Valve for XLO Burner – Removal and...

  • Page 42: Solenoid Valve For Grill - Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG NOTE: It is always recommended to label and tag all wires, wire 4.5.5 Solenoid Valve for Grill – Removal and Replacement connectors, and harnesses prior to disconnecting them, so as to Access for the solenoid valve for the grill is under the maintop.

  • Page 43: Xlo Valve Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.5.6 XLO Valve Removal and Replacement The XLO valves are for the left-most front and left-most rear (simmer) burners only. When replacing the XLO valve, on some models you...
  • Page 44 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. First make a note of how the wires are connected to the solenoid 9. Gently lift the protruding part of the XLO valve out of the valve terminals, and then remove the wires from the terminals.
  • Page 45 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 10. Remove the white plastic side connector from the potentiometer by pressing on the connector tab. (see Figure 85). 11. Replace the XLO valve if needed.

  • Page 46: Potentiometer Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 2. Follow all steps in Accessing Components under the Maintop, 4.5.7 Potentiometer Removal and Replacement page 21. Be sure to check QuickFinder for relevant information, documentation, 3.

  • Page 47: Manifold Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 10. Remove the white plastic side connector from the potentiometer NOTE: The manifold is sold as an assembly, which comes with XLO by pressing on the connector’s tab.
  • Page 48 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 7. Detach all wire connectors to the LED indicators and temperature the jet holder assemblies and remove the gas tubes. Be careful gauge, and make a note of how all the wires are connected.

  • Page 49: Oven Lamp Transformer Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 18. Now remove and retain the screw holding the manifold pipe onto 4.5.9 Oven Lamp Transformer Removal and Replacement the bracket (near the regulator). You do not have to remove the To diagnose problems with the oven light, see Figure 147, page 76.

  • Page 50: Oven Temperature Selector Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.5.10 Oven Temperature Selector Removal and Replacement For 48-inch ranges, there is a dedicated oven temperature selector for each of the two ovens. This procedure covers the removal and replacement for both oven temperature selectors.

  • Page 51: Five-Position Oven Function Selector Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 5. From the back of the control panel, first make a note of how the 4.5.11 Five-Position Oven Function Selector Removal and...

  • Page 52: Oven Temperature Gauge Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 1. Follow all safety precautions and steps in Preparing the Range for 4.5.12 Oven Temperature Gauge Removal and Replacement Servicing, page 21.

  • Page 53: Regulator Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.5.13 Regulator Removal and Replacement Be sure to check QuickFinder for relevant information, documentation, and the correct part number when replacing this component.

  • Page 54: Control Board Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 1. Follow all safety precautions and steps in Preparing the Range for 4.5.14 Control Board Removal and Replacement Servicing, page 21.

  • Page 55: Control Board Removal And Replacement (Small Oven)

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.5.14.2 Control Board Removal and Replacement (Small Oven) Caution This procedure is for the oven control boards of the small ovens on the 48-inch ranges only.

  • Page 56: Simmer Control Board Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 5. Using a needle nose pliers, disengage the control board from all the plastic standoffs by lightly pressing the tiny protruding clip on each standoff, while simultaneously pulling the simmer board off the standoff (see Figure 106).

  • Page 57: Hot Surface Igniter Board Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.5.16 Hot Surface Igniter Board Removal and Replacement The hot surface igniter (HSI) control board is for the HSI on the gas grill burner (see Grill Hot Surface Igniter Removal and Replacement, page 35).

  • Page 58: Led Indicator Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.5.17 LED Indicator Removal and Replacement Be sure to check QuickFinder for relevant information, documentation, and the correct part number when replacing this component.

  • Page 59: Door Latch Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4. If obstructing access to the door latch access panel, remove the burner support rail (with jet holder assemblies attached) by following the steps in Removing the Burner Support Rail, page 24.
  • Page 60 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 115: Removing the Door Latch Figure 114: Door Latch, Screws, and Plunger Switch Plunger switch T-20 screws (2) Door latch 9.

  • Page 61: Plunger Switch Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 117: Typical Plunger Switch Tabs (2) – press both to release plunger switch 1. First follow steps 1 through 8 of the Door Latch Removal and Replacement procedure, starting on page 60.

  • Page 62: Griddle And Grill Thermostat Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.5.21 Griddle and Grill Thermostat Removal and Replacement Both the griddle and grill require a thermostat. For models with both griddle and grill, there are two thermostats.

  • Page 63: Control Panel And Bullnose Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3. Remove and retain the two screws on the bezel of the griddle/grill 4.5.22 Control Panel and Bullnose Removal and Replacement thermostat (see Figure 97, page 52).
  • Page 64 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 124: Three Nuts / Lockwashers (Right Side of Range Shown) 9. Remove and retain the screw at the right and left side panels (see Figure 125).
  • Page 65 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 10. While holding the control panel to support it from falling, remove and retain the screws from under the control panel (see Figure 126).
  • Page 66 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 130: Bracket (Shown Removed) 14. At the back side of the control panel and bullnose, remove and Figure 128: Control Panel Removed (Attached to Bullnose) retain the screws that secure the bullnose onto the control panel.

  • Page 67: Removal And Replacement Of Back-Accessible Components

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG the CAN 1-B149.1 and .2 – Installation Codes for Gas Burning 4.6 Removal and Replacement of Back-Accessible Appliances and/or local codes.

  • Page 68: Back Panel Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.6.2 Back Panel Removal and Replacement Be sure to check QuickFinder for relevant information, documentation, and the correct part number when replacing this component.

  • Page 69: Crossmember Cover Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.6.3 Crossmember Cover Removal and Replacement 4.6.4 Terminal Block Removal and Replacement You will need to remove the crossmember cover if you are removing a At the terminal box (junction box), replace the terminal block in the wire connector to the bake burner HSI or bake burner electrode.

  • Page 70: Electrical Wiring Connections At The Terminal Block

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.6.6 Cooling Fan Removal and Replacement Some models use a cooling fan with a Hall Effect sensor attached, which is a part of the cooling fan assembly. Other models use a cooling fan with an air interlock switch installed (see Air Interlock Switch Removal and Replacement, page 72).

  • Page 71: Air Interlock Switch Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4. At the back of the range, detach the wire connectors, and make a 4.6.6.1 Air Interlock Switch Removal and Replacement...

  • Page 72: Thermal Fuse Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.6.7 Thermal Fuse Removal and Replacement When the range temperature reaches the maximum temperature threshold, the thermal fuse breaks the electrical circuit in order to protect the electronics from abnormally high heat conditions.

  • Page 73: Removal And Replacement Of Front-Accessible Components

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 8. At the back of the range, while wearing gloves, clear a path in the 4.7 Removal and Replacement of Front-Accessible...

  • Page 74: Oven Lamp And Bulb Removal, Replacement, And Diagnostics

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.7.2 Oven Lamp and Bulb Removal, Replacement, and 1. Follow all safety precautions and steps in Preparing the Range for Servicing, page 21.
  • Page 75 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 147: Oven Light Diagnostics Page 76 of 95 58300000157422_ARA_EN_A...

  • Page 76: Oven Door Removal, Installation, And Alignment

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 3. Close the door until it stops against the locking levers while firmly 4.7.3 Oven Door Removal, Installation, and Alignment grasping the door with both hands.

  • Page 77: Aligning The Door

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG and rest straight on the front of the range when closed. If the door does not operate correctly, verify that the hinges are properly seated into the hinge slots, and that the locking levers are fully engaged into the slots.

  • Page 78: Convection Components - Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 1. Follow all safety precautions and steps in Preparing the Range for 4.7.4 Convection Components – Removal and Replacement Servicing, page 21.
  • Page 79 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Figure 154: Convection Element Wire connector terminals (2) Screw locations (2) Screw location (1) Figure 153: Front Cover Screw locations (4) securing front cover 8.
  • Page 80 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 10. Remove the reflector cover shield (see Figure 156). Figure 157: Convection Motor Wire Connectors Figure 156: Reflector Cover Shield 12.
  • Page 81 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 15. Remove the bracket (with fiberglass insulation) attached to motor (see Figure 161). Figure 159: Removing the Washer and Shim Ring...

  • Page 82: Broil Burner Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG Eye Protection To protect your eyes from debris, it is recommended to wear protective eye wear at all times when removing or installing components inside the oven cavity.
  • Page 83 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 1. Follow all safety precautions and steps in Preparing the Range for 8. Remove and retain the four screws securing the front-facing Servicing, page 21.
  • Page 84 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 9. Hold the element-bracket assembly in place (so as not to bend the 10. While continuing to hold the element-bracket assembly, lower it element) while you remove and retain the four screws securing slightly while you remove the reflector (see Figure 170).

  • Page 85: Bake Element Components - Removal & Replacement (Large Oven)

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.7.6 Bake Element Components – Removal & Replacement 4. Remove the kick panel (see Figure 171 and Kick Panel Removal and Replacement, page 94.
  • Page 86 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. Remove and retain the four screws on the bottom cover that 7. Remove and retain the screws holding the ends of the element secure it to the brackets on the bake element tray, and then onto the bake element tray (see Figure 176).

  • Page 87: Bake Element Components - Removal & Replacement (Small Oven)

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.7.7 Bake Element Components – Removal & Replacement 6. Remove and retain the two screws on the bottom cover that...

  • Page 88: Door Handle Components - Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.7.8 Door Handle Components – Removal and Replacement Be sure to check QuickFinder for relevant information, documentation, and correct part numbers when replacing any of these components.

  • Page 89: Door Hinge Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. Remove and retain the three screws at the bottom of the door (see Figure 182). Figure 183: Hex Head Cap Screws and Washers Hex head cap screws and washers (4 of each) –...
  • Page 90 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 1. Follow steps 1 through 7 of the Door Handle Components – 5. With the deep-well socket or similar tool still pressing on the hinge thumb, slowly release it, bringing the hinge and locking lever all Removal and Replacement procedure, page 89.
  • Page 91 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 6. Remove and retain the screws as shown in Figure 187 and Figure 188. Figure 188: Screws for Hinge Removal...

  • Page 92: Door Gasket Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.7.10 Door Gasket Removal and Replacement Be sure to check QuickFinder for relevant information, documentation, and the correct part number when replacing this component.

  • Page 93: Kick Panel Removal And Replacement

    Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG 4.7.11 Kick Panel Removal and Replacement Be sure to check QuickFinder for relevant information, documentation, and the correct part number when replacing this component.
  • Page 94 Service Manual for Thermador Pro Grand Dual Fuel Ranges: PRD304EG, PRD364EDG, PRD364EDPG, PRD364ELG, PRD366EG, PRD366EPG, PRD484ECG, PRD484EEG, PRD486EDG, PRD486EDPG, PRD486ELG ■ Make sure all panels and components are properly and securely ADDITIONAL RESOURCES reassembled. ■ Make sure the range is level and adjust accordingly.

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