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GE Appliances
Technical Service Guide
March 2015
Combination Wall Oven
27"
JK3800DH1BB
JK3800DH1WW
JK3800SH1SS
JK3800DH2BB
JK3800DH2WW
JK3800SH2SS
GE Appliances
General Electric Company
Louisville, Kentucky 40225
30"
JT3800DH1BB
JT3800SH1SS
JT3800DH2BB
JT3800SH2SS
PT7800DH1BB
PT7800DH1WW
PT7800SH1SS
PT7800DH2BB
PT7800DH2WW
PT7800SH2SS
PT9800SH1SS
PT9800SH2SS
CT9800SH1SS
31-9239
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Related Manuals for GE JK3800DH1BB
Summary of Contents for GE JK3800DH1BB
- Page 1 GE Appliances Technical Service Guide March 2015 Combination Wall Oven 27” 30” JK3800DH1BB JT3800DH1BB JK3800DH1WW JT3800SH1SS JK3800SH1SS JT3800DH2BB JK3800DH2BB JT3800SH2SS JK3800DH2WW PT7800DH1BB JK3800SH2SS PT7800DH1WW PT7800SH1SS PT7800DH2BB PT7800DH2WW PT7800SH2SS PT9800SH1SS PT9800SH2SS CT9800SH1SS GE Appliances 31-9239 General Electric Company Louisville, Kentucky 40225...
- Page 2 If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened. GE Appliances Technical Service Guide Copyright © 2015 All rights reserved. This service guide may not be reproduced in whole or in part in any form without written permission from the General Electric Company.
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Page 3: Table Of Contents
Table of Contents Safety Requirements ..................................6 Introduction ....................................... 8 Additional Service Information ..............................9 Nomenclature ....................................10 .................................. 11 ............................11 Accessories ......................................11 Tools Needed ..................................... 12 Service Harness Extension ................................13 ......................................14 Installation ......................................15 Owner's Manuals Information ..............................17 Oven Controls 3800 Series .............................. - Page 4 Convection Heater Assembly and Thermistor ......................45 Upper Heater Assembly ............................... 45 Blower Assembly ..................................46 Convection Heater Element ............................... 47 Convection Fan Motor ................................48 Damper Assembly................................... 48 Damper Door Switch ................................49 Magnetron and Magnetron TCO ............................49 High Voltage Transformer ..............................
- Page 5 Convection Element ................................69 Diagnostics ......................................70 Software Versions / Fault Codes ............................70 Troubleshooting Lower Oven ..............................71 Accessing Machine Control Board/Bridge Board ......................72 Service Mode ..................................... 74 GE Wall Oven Warranty ................................76 – 5 –...
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Page 6: Safety Requirements
Safety Requirements GE Factory Service Employees are required to use safety glasses with side shields, safety gloves and steel toe shoes for all repairs. Electrically Rated Glove and Steel Toed Work Boot Dyneema®Cut Resistant Dyneema® Cut Resistant Glove Glove Keeper... - Page 7 PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY. A. DO NOT OPERATE OR ALLOW THE OVEN TO BE OPERATED WITH THE DOOR OPEN. B. IF THE OVEN OPERATES WITH THE DOOR OPEN, INSTRUCT THE USER NOT TO OPERATE THE OVEN AND CONTACT THE MANUFACTURER IMMEDIATELY.
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Page 8: Introduction
Introduction GE’s Updated Combination Wall Ovens GE has introduced the new versions of 27 inch and 30 inch combination wall ovens. In addition, an Advantium® model was added to the wall oven line. The Advantium® oven uses Speedcook technology to harness the power of light. The Advantium® oven cooks the outside of foods much like conventional radiant heat, while also penetrating the surface so the inside cooks simultaneously. -
Page 9: Additional Service Information
Similar to previous models where a full size microwave was integrated into a 27 in. or 30 in. Wall Oven, the new design also incorporates a GE Advantium® version. The ovens are built on the 2013 Wall Oven design, thus servicing them will be the same with a few exceptions. -
Page 10: Nomenclature
Nomenclature Serial Number The nomenclature breaks down and explains what the letters and numbers mean in the model number. The the year repeats every 12 years. Example: LA123456S = June, 2013 A – JAN 2024 – Z The mini manual is located behind the middle D –... -
Page 11: Accessories
kW Rating kW Rating Circuit Size 240V 208V (Dedicated) 20 amps 4.9 kW – 7.2 kW 4.2 kW – 6.2 kW 30 amps 7.3 kW – 9.6 kW 6.3 kW – 8.3 kW 40 amps 9.7 kW – 12.0 kW 8.4 kW –... -
Page 12: Tools Needed
Tools Needed • Phillips head screwdriver or bit • 1/4” hex head nut driver or socket • 3/8” socket wrench • 7 mm socket or wrench • T10 Torx bit • T20 Torx bit • Upper oven door removal tool. WB01X10364 included with replacement door assembly. Special Tools No special tools are required to service these units. -
Page 13: Service Harness Extension
Service Harness Extension To enable testing the upper oven, outside of enclosure, use the Service Harness Extension (WX05X24267). This 6 foot cable consists of a 2 wire communications cable along with a 3 wire AC cable. Lower Oven Upper Oven –... - Page 14 Machine Control: A separate control board that contains all relays and communicates with the User Interface to control all outputs. The Machine Control is located behind the control panel housing. User Interface: A LOGIC board that interprets customer input from the keypanel. Bridge Board: An interface board that communicates between the User Interface, Machine Control and Microwave Controls.
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Page 15: Installation
Installation CUTOUT FOR DOUBLE OVENS (with Upper Microwave Oven) NOTE: If the cabinet does not have a front frame and the sides are less than 3/4” (1.9 cm) thick, shim both sides equally to establish the cutout width. Dim. Description 27”... - Page 16 SECURING UPPER MICROWAVE/ADVANTIUM® OVEN TO CABINET For double oven with microwave or Advantium® upper ovens. Secure a wooden cleat to side of cabinet so that the upper oven can be secured to the cleat with provided screws. 27” Cabinet requirements •...
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Page 17: Owner's Manuals Information
Owner's Manuals Information Owner’s Manuals (available on website) • 49-80737: JK3800 • 49-80737: JT3800 • 49-80738: PT7800 • 49-80741: PT9800 – 17 –... -
Page 18: Oven Controls 3800 Series
Oven Controls 3800 Series Common Controls Upper Oven Controls : Works as a countdown timer. 7. Microwave: Press the Microwave pad for microwaving options. Use the selector dial to (hours and minutes or minutes and seconds), use the selector dial to set the time, and press the selector dial to select it. - Page 19 Oven Controls 3800 Series continued oven programs except the clock and timer. Lower Oven Controls 13. Light: Press the Light pad to turn the oven light the lower oven will not turn on if the oven is in a clean mode. 14.
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Page 20: Oven Controls 7800 Series
Oven Controls 7800 Series Common Controls Upper Oven Controls : Works as a countdown timer. 7. Microwave: Press the Microwave pad for microwaving options. Use the selector dial to (hours and minutes or minutes and seconds), use the selector dial to set the time, and press the selector dial to select it. - Page 21 Oven Controls 7800 Series continued Lower Oven Controls 13. Light: Press the Light pad to turn the oven light the lower oven will not turn on if the oven is in a clean mode. 14. Bake: Press the Bake pad to bake; rotate selector dial to select baking temperature and press to select.
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Page 22: Oven Controls 9800 Series
Oven Controls 9800 Series Common Controls Upper Oven Controls : Works as a countdown timer. 7. Microwave: Press the Microwave pad for microwaving options. Use the selector dial to (hours and minutes or minutes and seconds), use the selector dial to set the time, and press the selector dial to select it. - Page 23 Oven Controls 9800 Series continued oven programs except the clock and timer. Lower Oven Controls 13. Light: Press the Light pad to turn the oven light the lower oven will not turn on if the oven is in a clean mode. 14.
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Page 24: Oven Settings
Oven Settings Help Display Mode Use this feature to set Power Saver or Display and its features by pressing the Settings pad and Always On display mode. selecting Help. Turn the selector dial and press to Auto Conversion NOTE: Not all features of Help may be on the When Auto Conversion is on it will automatically oven model. -
Page 25: Oven Options
Oven Options Upper Oven Options Repeat Last This feature can only be used for upper oven cooking modes. Use this time saving feature for cooking repetitive items like cookies or appetizers. When selecting this feature, the last preset food will be displayed. Select Start/Pause pad or the selector dial to start cooking. - Page 26 Lower Oven Options Delay Start Use this feature to delay starting a Bake, Convection Bake, Probe, or Self Clean feature. To use this feature select Delay Start and set the time to start, then select cook mode. Use the Delay Start feature while programming a Bake, Convection Bake, or Probe cooking feature.
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Page 27: Lower Oven Cooking Modes
Lower Oven Cooking Modes The new oven has a variety of cooking modes to help get the best results. These modes are described below. Refer to the Cooking Guide Baking and Roasting Modes Convection Roast Select a mode for baking and roasting based on the The Convection Roast mode is intended for roasting type and quantity of food being prepared. - Page 28 Broil Lo The Broil Lo mode uses less intense heat from the upper element to cook food thoroughly while also producing surface browning. Use Broil Lo for thicker cuts of meat and/or foods that may be cooked all the way through. To use this mode, press the Broil pad, turn the selector dial to Lo and press to enter, and then press Start.
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Page 29: Sabbath Mode
Sabbath Mode The new oven conforms to the Star-K Jewish The Bake feature will start (or if already running, the Sabbath requirements with the Sabbath mode oven temperature will change) at a random time cooking feature. Details of the Sabbath mode between 30 –... - Page 30 Sabbath Mode continued Timed Cook Feature In Sabbath Mode NOTES The Sabbath mode is not capable of running a timed • During Sabbath mode, only the lower oven Bake cook feature on its own. If there is a desire to run a is available.
- Page 31 Cool air is drawn into the top grille on the upper oven and discharged at the bottom of the oven. Cool air is also drawn up through the lower oven door, over the top oven, which includes the oven vent discharge, down the back and out through the bottom of lower oven.
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Page 32: Speedcook Operation
Speedcook Operation Speedcook Power Levels Lower Heater Advantium® uses power from a high-intensity The lower heater is a 375 watt ceramic heater. halogen light, ceramic heaters, and microwaves It operates in Speedcook, oven/bake, and warm to cook food from the top, bottom, and interior modes. - Page 33 At the start of each new Speedcooking operation, The following chart shows the predicted the cavity thermistor reads the oven temperature compensation times based on a 12 minute and sends this information to the main PCB board. Speedcook selection (such as Biscuits, Refr; Large). If the oven temperature is 150°F or higher, the Voltage Compensation Chart main PCB board will initiate thermal compensation.
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Page 34: Upper Oven Components
Upper Oven Components Door Assembly WARNING: A microwave leakage test must be performed any time a door is removed, replaced, or adjusted for any reason. Door Removal CAUTION: Do not close the door beyond the door removal position. Damage to the inner door panel will occur. -
Page 35: Control Panel Assembly
4. Remove the two Phillips head screws that Control Panel Assembly attach the control panel assembly to the side of the frame. The control panel assembly consists of an outer control panel and an inner control panel bracket. The outer control panel contains the control, display, selector circuit boards, power and relay circuit boards. -
Page 36: Control Boards And Panel Connections
Control Boards and Panel Connections Upper Oven Control - Advantium ® Upper Oven Control - Microwave (Continued next page) – 36 –... - Page 37 Control Boards and Panel Connections continued Power Board CN1: AC Input CN5: Humidity sensor CN6: Door Secondary Sensing Switch and Damper Door Sensing Switch CN8: Thermistor CN11: Relay Board CN15: Lower Oven Communication Signal CN17: Control Board CN18: Control Board (Continued next page) –...
- Page 38 Relay Board CN2: Connection to Oven lamp, Blower motor, Convection motor, Damper motor and Turntable Motor CN3: Control Board CN11: Power Supply Board RY2: High Voltage Transformer (NA)* RY7: Convection Heater (RD)* RY8: Upper Heater (Ceramic) (BL)* RY9: Lower Heater (YL)* RY11: Upper Heater (Halogen) (WH)* RY13: Double Line Break (BK)* ( )* Two letters indicate the color of the connectors going to the relays...
- Page 39 Display Board CN1 to Control Board CN10 Keypanel and Encoder Board CON3 to Control Board CN102 CN15 Encoder Board to Control Board CN15 (Continued next page) – 39 –...
- Page 40 Control Board CN3 To Relay board CN3 CN10 To Display board CN1 CN13 No Connections CN15 To Encoder board CN17 To Power Supply board CN17 CN18 To Power Supply board CN18 CN101 No Connections CN102 To Keypanel CON 3 (Continued next page) –...
- Page 41 Power Board Removal 1. Remove the control panel assembly. (See the Control Panel Assembly section of this guide.) 2. Disconnect all wire harnesses from the power board at locations CN1, CN5, CN6, CN8, CN11, CN15, CN17 and CN18. 3. Remove the four Phillips head screws that attach the power board to the control panel bracket. 4.
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Page 42: Removing Upper Oven
Removing Upper Oven CAUTION: Upper oven weighs 68 lbs. Use two men or the oven dolly for safe removal. 1. Open the door and remove all trays, racks, or other cooking utensils including the turntable ring. 2. Remove screws from side trims (see Installation section in this Guide). 3. -
Page 43: Upper Oven Electrical Components
Upper Oven Electrical Components Upper Heater and Oven Cavity TCO's Lower Heater Assembly The lower ceramic heater has an approximate event of excessive temperatures. When replacing, be sure to determine the cause of failure. If a TCO Lower Heater Assembly Removal opens, it will disable all oven functions except the oven light. -
Page 44: Humidity Sensor
Humidity Sensor Turntable Motor The humidity sensor is mounted to the exhaust duct The turntable motor is held in place with two Phillips- on the left side of the oven. The outer cover must head screws. To replace it requires removing the be removed to access the humidity sensor. -
Page 45: Convection Heater Assembly And Thermistor
Convection Heater Assembly and Thermistor Upper Heater Assembly The oven must be removed from the cabinet or wall The halogen heater has an approximate resistance opening to access the convection heater assembly. (See the Removing Upper Oven section in this white wire harness. -
Page 46: Blower Assembly
5. Straighten the four folded lock tabs. Blower Assembly 6. Remove the eight Phillips head screws that A blower protects the oven from too much heat around the oven cavity. It automatically turns on at low speed if it senses too much heat. The blower will cool. -
Page 47: Convection Heater Element
5. Disconnect wire harnesses on the relay board at Convection Heater Element locations CN2, RY2. RY7, RY8, RY9, and RY11. The convection heater assembly is held in place by two 7 mm hex nuts and 4 Phillips head screws. The convection heater element has an approximate connect the power wires to the element terminals. -
Page 48: Convection Fan Motor
Convection Fan Motor Damper Assembly The convection fan motor wire leads have locking The damper assembly is on the top right side of tabs that must be depressed to be disconnected. the oven cavity. When the damper door is closed, moisture is retained in the oven cavity. -
Page 49: Damper Door Switch
Damper Door Switch Magnetron and Magnetron TCO The damper door sensing switch is mounted to the WARNING: Always be certain the capacitor is damper assembly. The switch monitors the damper discharged before servicing. (See the Capacitor and door position and provides this information to the Diode section in this guide.) Mechanically discharge main PCB, which controls the operation of the by placing insulated pliers between the diode... -
Page 50: High Voltage Transformer
High Voltage Transformer Check the high voltage transformer windings for approximate resistance value between: WARNING: Always be certain the capacitor is Red to white discharged before servicing. (See the Capacitor and Diode section in this guide.) Mechanically discharge Red/Black by placing insulated pliers between the diode connection of the capacitor and the oven chassis ground. - Page 51 How to Test Primary Interlock and Door Sensing How to Test Interlock System Switches 1. Disconnect power, remove the outer cover (see 1. Disconnect power and partially remove the oven the Removing Upper Oven section in this guide) from its installation. (See the Removing Upper and discharge the capacitor.
- Page 52 Test Circuit Operation Door Switch Replacement 1. Connect temporary jumper leads across relay 1. Place the oven in a partially removed position. contacts, primary interlock and door sensing (See the Removing Upper Oven section in this switches to simulate shorted switch contacts. guide.) Locate convenient connections in the circuit to 2.
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Page 53: Noise Filter
Latch Board Replacement Noise Filter 1. Place the oven in a partially removed position. (See the Removing Upper Oven section in this assembly on the right side of the oven. The noise guide.) 2. Open the oven door. ground wire is attached to the oven chassis near 3. -
Page 54: Surge Board
Surge Board Capacitor and Diode The surge board is located behind the blower WARNING: Always be certain the capacitor is assembly on the right side of the oven. The board discharged before servicing. Mechanically discharge is held in place by a single Phillips head screw. The by placing insulated pliers between the diode ground wire is attached to the oven chassis near connection of the capacitor and the oven chassis... -
Page 55: Cavity Light
Cavity Light Proof Feature Upper oven The oven lamp is inserted in a socket that is To test the performance of the proof feature, press attached to the lamp housing with two Phillips head the WARM/PROOF pad, then turn the dial to PROOF screws. -
Page 56: Microwave Leak Test
Microwave Leak Test Standard Test Load The standard test load is one liter (1000 ml) water with a starting temperature of 59°F - 75°F in a 1,000 ml beaker. (DO NOT USE ANY OTHER LOAD OR DISH AS RESULTS WILL VARY FROM STANDARD.) Performance Test for Microwave 1. -
Page 57: Demo Mode
Demo Mode The Sales Demo mode will allow dealers to demonstrate all oven functionality with one exception: • No power is ever applied to any of the halogen lamps, heaters, mag HVT or inrush relays while the control is in sales mode. The Demo mode is accessed by pressing and holding START and BACK at the same time for 3 seconds during power up (this can be done while... -
Page 58: Schematic Diagram
Schematic Diagram – 58 –... -
Page 59: Lower Oven Structural Components
Lower Oven Structural Components Oven Door Removal Oven Removal 1. To remove doors on later production models Servicing the cooling fan motor, wiring, high limit of wall ovens, remove the two T20 Torx screws thermostat, convection motor and bake element and the bracket from the left and right vertical mounting screw are only accessible with the oven braces. -
Page 60: Door Assembly
Door Assembly • Handle: After separating the door panels, remove the two 1/4 in. screws that hold the The Door Assembly consists of the outer door glass, handle onto the outer door assembly. liner and hinge assemblies. • Hinges: After separating the door panels, the hinges can be removed by removing the two Door Disassembly T20 Torx screws. -
Page 61: Gasket
Gasket Vertical Brace All gaskets attach to oven front frames and are held The vertical braces support the frame and contain in place with pins. the hinge receivers. To replace the oven gasket, start with the lower left Vertical Brace Removal corner. - Page 62 9. Remove the four screws from the side trim. 11. Remove the seven screws from the front of the insulation retainer. 10. Remove the bottom six screws from the base. 12. Remove the two 3/8 in. nuts from the vertical brace.
- Page 63 13. Remove the two screws from the bottom of the Vertical Brace Reinstallation base pan. 1. Reinstall the 3/8 in. nuts on the vertical brace. 2. Reinstall all of the screws, starting with the lower two screws on the base pan. 3.
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Page 64: Lower Oven Electrical Components
Lower Oven Electrical Components Rear Component Access Lower Oven Cooling Fan Motor Convection Fan Motor The cooling fan is used to maintain standard guidelines for external temperature, and preventing The Convection Fan Motor moves heated air components from getting to critical temperatures throughout the oven cavity. -
Page 65: Cooling Fan Motor Reinstallation
Cooling Fan Motor Reinstallation L2 High Limit Switch 1. Reinstall the four screws to secure the blower A safety thermostat is used in the event of a thermal motor assembly to the frame. runaway (example: welded relay contacts). It will open the L2 circuit to all the elements. -
Page 66: Oven Sensor
Oven Sensor Lock Assembly The Oven Sensor is located on the broil unit On the latch mechanism, the feedback from the mounting plate, and secured with one T20 Torx switch to the control signals the board to run the screw and tab. Pull the connector through the cooling fan on high. -
Page 67: Elements
Elements 8. Remove two T20 Torx screws that secure the hidden bake compartment cover in place. Hidden Bake To enhance oven cleanability, and bake element longevity, all wall ovens have hidden bake elements. 9. With pliers, grasp the tabs on each side of the screw locations and pull forward. -
Page 68: Broil
Element Reinstallation Broil 1. Be careful that the wire terminals do not catch Broil Elements Removal on the rear of the frame when reinstalling 1. Remove one T20 Torx screw from the oven the element. Be sure that the insulation is sensor, pull the wire through and disconnect. -
Page 69: Convection Element
Convection Element Convection Element Reinstallation 1. Reinstall the wires and push the element The Convection Element provides an additional forward. 2. Reinstall the four T20 Torx screws. Convection Element Removal 3. Reinstall the six T20 Torx screws on the rear 1. -
Page 70: Diagnostics
Diagnostics Software Versions / Fault Codes Software version can be checked by either: 1. Press and hold START and COOKING OPTIONS (upper oven) for 3 seconds. 2. Press and hold START and POPCORN for 3 seconds. The method varies based on the model. Lower Oven fault codes can be accessed by pressing and holding START and BAKE (lower oven) for 3 seconds. -
Page 71: Troubleshooting Lower Oven
Troubleshooting Lower Oven Mini Manual # 31–17121–1 (available on website). Dead Unit If Control does not show any display, after verifying the circuit breaker is ON, check for 120 VAC at the black wire on the BROIL relay to the white wire on J102, with wires still connected to board. -
Page 72: Accessing Machine Control Board/Bridge Board
Accessing Machine Control Board/Bridge Board 1. Remove the four T20 Torx screws from middle cover trim. 2. Remove the four T20 Torx screws from middle trim. 3. Remove the two 1/4 in. screws from lock motor assembly and set assembly aside. 4. - Page 73 Machine Control Schematic – 73 –...
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Page 74: Service Mode
Service Mode If the lower oven sets a critical fault code, the display shows the fault and shuts down all lower Advantium® Unit oven functions. After the problem is corrected, the display will return to normal but the fault will have Remove any trays (metal or glass) from the upper to be cleared. - Page 75 The following table lists the order that the loads will Similar Service modes are available on Microwave be cycled, as well as the amount of time each is and Convection ovens. energized. Each dial press will advance to the next To Enter the Service Mode on These Models load.
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Page 76: Ge Wall Oven Warranty
This warranty is extended to the original purchaser and any succeeding owner for products purchased for home use within the USA. If the product is located in an area where service by a GE Authorized Servicer is not available, you may be responsible for a trip change or you may be required to bring the product to an Authorized GE Service location for service.