GE JK3800DH1BB How to use

GE Appliances
General Electric Company
Louisville, Kentucky 40225 31-9239
Combination Wall Oven
Technical Service Guide
March 2015
GE Appliances
27”
JK3800DH1BB
JK3800DH1WW
JK3800SH1SS
JK3800DH2BB
JK3800DH2WW
JK3800SH2SS
30”
JT3800DH1BB
JT3800SH1SS
JT3800DH2BB
JT3800SH2SS
PT7800DH1BB
PT7800DH1WW
PT7800SH1SS
PT7800DH2BB
PT7800DH2WW
PT7800SH2SS
PT9800SH1SS
PT9800SH2SS
CT9800SH1SS

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IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by
individuals possessing adequate backgrounds of electrical,
electronic, and mechanical experience. Any attempt to repair a
major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.
WARNING
To avoid personal injury, disconnect power before servicing
this product. If electrical power is required for diagnosis or test
purposes, disconnect the power immediately after performing the
necessary checks.
RECONNECT ALL GROUNDING DEVICES
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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Table of Contents
Safety Requirements.....................................................................................................................................................................6
Introduction.......................................................................................................................................................................................8
Additional Service Information..................................................................................................................................................9
Nomenclature...................................................................................................................................................................................10
3URGXFW6SHFL¿FDWLRQV ..................................................................................................................................................................11
,QVWDOODWLRQ(OHFWULFDO6SHFL¿FDWLRQV.......................................................................................................................................11
Accessories.........................................................................................................................................................................................11
Tools Needed.....................................................................................................................................................................................12
Service Harness Extension..........................................................................................................................................................13
'H¿QLWLRQV...........................................................................................................................................................................................14
Installation .........................................................................................................................................................................................15
Owner's Manuals Information...................................................................................................................................................17
Oven Controls 3800 Series..................................................................................................................................................18
Oven Controls 7800 Series..................................................................................................................................................20
Oven Controls 9800 Series..................................................................................................................................................22
Oven Settings............................................................................................................................................................................24
Oven Options.............................................................................................................................................................................25
Lower Oven Cooking Modes..............................................................................................................................................27
Sabbath Mode..........................................................................................................................................................................29
$LUÀRZ...................................................................................................................................................................................................31
Speedcook Operation....................................................................................................................................................................32
Upper Oven Components............................................................................................................................................................34
Door Assembly.........................................................................................................................................................................34
Control Panel Assembly.......................................................................................................................................................35
Control Boards and Panel Connections................................................................................................................................36
Removing Upper Oven..................................................................................................................................................................42
Upper Oven Electrical Components.......................................................................................................................................43
Upper Heater and Oven Cavity TCO's............................................................................................................................43
Lower Heater Assembly.......................................................................................................................................................43
Humidity Sensor......................................................................................................................................................................44
Turntable Motor........................................................................................................................................................................44

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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...................................................................................................................................................50
Left and Right Door Switch Assemblies........................................................................................................................50
Noise Filter..................................................................................................................................................................................53
Surge Board...............................................................................................................................................................................54
Capacitor and Diode..............................................................................................................................................................54
Cavity Light................................................................................................................................................................................55
Proof Feature Upper oven...................................................................................................................................................55
Microwave Leak Test.............................................................................................................................................................56
Standard Test Load................................................................................................................................................................56
Demo Mode...............................................................................................................................................................................57
Schematic Diagram.......................................................................................................................................................................58
Lower Oven Structural Components......................................................................................................................................59
Door Assembly.........................................................................................................................................................................60
Gasket...........................................................................................................................................................................................61
Vertical Brace............................................................................................................................................................................61
Lower Oven Electrical Components.......................................................................................................................................64
Cooling Fan Motor..................................................................................................................................................................64
Cooling Fan Motor Reinstallation.....................................................................................................................................65
L2 High Limit Switch..............................................................................................................................................................65
Oven Sensor..............................................................................................................................................................................66
Lock Assembly..........................................................................................................................................................................66
Elements......................................................................................................................................................................................67
Hidden Bake..............................................................................................................................................................................67
Broil................................................................................................................................................................................................68

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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

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Safety Requirements
GE Factory Service Employees are required to use safety glasses with side shields, safety gloves and
steel toe shoes for all repairs.
Steel Toed Work Boot Electrically Rated Glove and
Dyneema® Cut Resistant
Glove Keeper Dyneema®Cut Resistant
Glove
Plano Type Safety Glasses
Prescription Safety Glasses
Safety Glasses must be ANSI
Z87.1-2003 compliant
Brazing Glasses
Cut Resistant Sleeve(s)
Prior to disassembly of the oven to access components, GE Factory
Service technicians are REQUIRED to follow the Lockout / Tagout
(LOTO) 6 Step Process:
Step 1
Plan and Prepare Step 4 Apply LOTO device and lock
Step 2
Shut down the appliance Step 5 Control (discharge) stored energy
Step 3
Isolate the appliance Step 6 “Try It” verify that the appliance is
locked out

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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.
C. MAKE THE FOLLOWING SAFETY CHECKS ON ALL OVENS TO BE SERVICED BEFORE ACTIVATING THE
MAGNETRON OR OTHER MICROWAVE SOURCE, AND MAKE REPAIRS AS NECESSARY:
1. INTERLOCK OPERATION
2. PROPER DOOR CLOSING
3. SEAL AND SEALING SURFACES (ARCING, WEAR AND OTHER DAMAGE)
4. DAMAGE TO OR LOOSENING OF HINGES AND LATCHES
5. EVIDENCE OF DROPPING OR ABUSE
D. BEFORE TURNING ON MICROWAVE POWER FOR ANY TEST OR INSPECTION WITHIN THE MICROWAVE
GENERATING COMPARTMENTS, CHECK THE MAGNETRON, WAVE GUIDE OR TRANSMISSION LINE AND
CAVITY FOR PROPER ALIGNMENT, INTEGRITY AND CONNECTIONS.
E. ANY DEFECTIVE OR MISADJUSTED COMPONENTS IN THE INTERLOCK MONITOR, DOOR SEAL AND
MICROWAVE GENERATION AND TRANSMISSION SYSTEMS SHALL BE REPAIRED, REPLACED OR ADJUSTED
BY PROCEDURE DESCRIBED IN THIS MANUAL BEFORE THE OVEN IS RELEASED TO THE OWNER.
F. A MICROWAVE LEAKAGE CHECK TO VERIFY COMPLIANCE WITH THE FEDERAL PERFORMANCE STANDARD
SHOULD BE PERFORMED ON EACH OVEN PRIOR TO RELEASE TO THE OWNER.

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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. While halogen light is
the primary source of power, a "microwave boost” is added with certain foods. Foods cook evenly and fast,
retaining their natural moisture.
JK3800: 27” with microwave and conventional lower self-clean oven
JT3800: 30” with microwave and conventional lower self-clean oven
PT7800: 30” with convection microwave and convection lower self-clean oven
PT9800/CT9800: 30” with Advantium® oven and convection lower self-clean oven
Common Features:
Menu Driven Control: With 4 line graphical display.
Panelized Cavities: 4.3 cu ft 27” – 5.0 cu ft 30”. Not a serviceable part.
Hinge Receivers: Built into vertical supports.
Cavity Racks: Conventional ribs built into cavity panels (on some models).
Ladder Racks: Rack supports mounted to side panels (on some models).
Latch Assembly: New design, enables door latch pawl to be unlatched if unit fails in LOCKED mode.
Speedcook Oven: Delivers oven quality food up to four times faster than a conventional oven. No preheating
required.
True European Convection Oven: 1500 watt convection oven mode bakes and roasts at temperatures
ranging from 80°F to 450°F.
Sensor Microwave Oven: 975 watt sensor microwave oven mode automatically delivers perfect cooking
results.
Warming Oven: Keeps prepared foods warm and fresh, and retains perfect moistness and crispness.
Proof Feature: Specialized mode allows dough to rise quickly.
16 in. Turntable: Removable metal and glass trays easily handle large casserole dishes.
Rounded Rear Wall: Allows complete turntable rotation of 9 in. x 13 in. casserole dish for even cooking.
Pre-programmed Recipes: Provide quick and easy programming of over 175 Speedcook food selections.
Multi-Level Cooking: Removable rack allows cooking of multiple dishes at once.
Non-Stick Cooking Tray: 16 in. Speedcook tray cleans up easily.
Other Features:
Slide Out Microwave/Advantium® Module: For easier service. An adapter harness is available to enable unit
to be connected and serviced out of oven enclosure.
Service Mode: Available to assist technicians in the repair of the microwave/Advantium® portion of these
ovens.
Introduction

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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.
• Lower oven does not have a service mode.
• A RJ-45 connector is available for service and/or software updates.
• Only uses Machine Control oven control.
• An added “Bridge Board” is used to communicate between the upper and lower ovens.
• For Microwave or Advantium® service, the upper oven is a “module” that can be slid out for service.
• Service harness extension (Part #: WX05X24267) is available to enable the upper oven to be serviced and
tested outside of its enclosure.
• Time of day display location may change. This is normal operation to preserve display brightness.
This service guide will show the more complex version of the upper oven. The Advantium® model has more
components. The lower oven is based on the present production model of a single wall oven.
Additional Service Information

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Nomenclature
Serial Number
The nomenclature breaks down and explains what the letters and numbers mean in the model number. The
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the year repeats every 12 years.
Example: LA123456S = June, 2013
A – JAN
D – FEB
F – MAR
G – APR
H – MAY
L – JUN
M – JUL
R – AUG
S – SEP
T – OCT
V – NOV
Z – DEC
2024 – Z
2023 – V
2022 – T
2021 – S
2020 – R
2019 – M
2018 – L
2017 – H
2016 – G
2015 – F
2014 – D
2013 – A
The mini manual is
located behind the middle
oven trim.
The nomenclature plate is
located on the left hand
side of the oven cavity.