GE JB860 User manual

30” RADIANT FREE-STANDING RANGE
RADIANT HEATING ELEMENT SYSTEMS
The radiant heating element consists of a spiral-wound resistance wire attached
to microporous insulation with molded ceramic fiber walls in a corrosion-
protected metal tray.
The Heating Elements come in various sizes:
• 6” – 240 Volt, 1200 Watts
• 9”/6” – 240 Volt, 3100 Watts
• 12”/9” – 240 Volt, 3000 Watts
• Warmer – 240 Volt, 80 Watts
DUAL CIRCUIT CONTROL
This element has two cooking zones:
• To use the large cooking area, push to turn the control
knob clockwise to the desired setting.
• To use the small cooking area, push to turn the control
knob counterclockwise to the desired setting.
When a cooking zone is activated, coils beneath the zone
radiate heat through the glass cooktop to the utensil. The
red glow of the coils will be visible through the glass. It will
take the cooking zone on the glass surface a few moments
to heat up. The coil cycles on and off to maintain the
selected setting.
CONTROL PANEL ASSEMBLY REMOVAL
The control panel contains the control and infinite heat switches.
To Service:
1. Remove 2 screws (from bottom) securing control panel assembly
to the backguard endplates.
2. Remove 4 screws at the top, in the back of the range.
3. Pull bottom of panel out while lifting panel up.
4. Lay panel assembly on cooking surface.
CAUTION:Place a protective covering (such as a towel) between
the control panel and the cooking surface to avoid damage to the control panel.
TEMPERATURE LIMIT/HOT LIGHT SWITCH
The Temperature Limit/Hot Light Switch performs two functions:
1. Turns on HOT LIGHT when the Surface Unit Switch is turned on. The hot light will
remain on until the glass surface above the heating unit has cooled below 150°F
(even after surface unit switch has been turned off).
2. Detects when glass temperature above a unit has exceeded its limit of approximately
1031°F and disconnects power to that unit. When glass temperature cools below
1031°F, the unit will turn back on. The temperature limit/hot light switch cannot be
calibrated.
REMOVABLE OVEN DOORS
To Remove the Upper Oven Door:
1. Fully open the door.
2. Lift up on the hinge locks toward the oven frame until
they stop.
3. Close the door to 45 degrees (you will feel the door
stop). The hinge lock will contact the oven frame.
4. On both sides of the door, press down on the release
buttons on each hinge.
5. Lift up the door until it is clear of the hinge.
6. Pull on the hinge arms lightly to relieve pressure
on the locking tabs.
7. Push down the hinge locks onto the hinge.
8. Push in the hinges toward the unit so they are closed.
To Replace the Upper Oven Door:
1. Pull down the hinges away from the oven frame
to the fully open position.
2. Lift up on the hinge locks toward the oven frame until
they stop.
3. The hinges will release to the 45-degree position.
The hinge locks will contact the oven frame.
4. Slide the door back onto the hinges. Make sure
the buttons pop back out.
5. Fully open the door.
6. Push down the hinge locks onto the hinge.
7. Close the oven door.
To Remove the Lower Oven Door:
1. Fully open the door.
2. Push down the hinge locks
toward the door frame, to
the unlocked position. This
may require a flat-blade
screwdriver.
3. Firmly grasp both sides of the door at the top.
4. Close the door to the door-removal position.
5. Lift up the door until the hinge arm is clear of the slot.
Door
Frame
Push In
Pull Down
Hinge Lock
Slot
Hinge
Arm
Removal Position
To Replace the Lower Oven Door:
1. Firmly grasp both sides of the door at the top.
With the door at the same angle as the removal
position, seat the indentation of the hinge arm into
the bottom edge of the hinge slot.
2. Fully open the door.
3. Push up the hinge locks against the front frame
of the oven cavity, to the locked position.
4. Close the oven door.
Cooling Airflow:
Air enters the door assembly through large slots in the
bottom and flows upward between the inner and outer
assemblies, exhausting through slots in the top of the
door. DO NOT INSULATE THIS AIR CHANNEL.
To Service Upper and Lower Full-Glass Doors:
1. Complete door assembly:
• Remove the four screws from the bottom door frame.
• Remove the screws on each side of the door.
• The liner assembly and outer glass panel assembly can now be separated.
• Remove the four screws from the side posts at the bottom.
• Remove the four screws from the handle at the top of the handle bracket.
NOTE: On some doors, the bottom trim is sealed to the outer door glass
and cannot be separated.
2. Liner assembly:
• Remove the two screws on each side of the door liner to remove the door hinge
assembly.
• Remove the eight screws (6 for upper) from the insulation retainer.
• Remove the insulation retainer and then the insulation.
• The window pack is now accessible on units with a window door.
Door Gasket:
The door gasket is clipped into the liner of the door panel.
To Service Gasket
A gap must be left in the upper door gasket at bottom of door. The gap is required
to provide air flow in the oven for proper baking results.
Hinge
Arm
Hinge
Lock
Bottom
Edge
of Slot
Indentation
COOKTOP REMOVAL
To Remove:
1. Disconnect power.
2. Remove the 2 screws securing the front
of the cooktop to the chassis.
3. Prop up the cooktop, and unplug the
connectors at the back by squeezing the side
tabs. Remove the screw securing the ground
wire.
4. Lift up the back end of the cooktop about
2 inches to unhook the hinge pins from the
brackets.
5. Reverse the process to reinstall.
CAUTION:Raising the
cooktop too high can break the glass.
Hinge Pins
Cooktop
Mounting
Screws
Release
Buttons
Oven
Frame
Door panel
Gasket
Door panel
Gasket
650-02Q
Upper Gasket - Open Lower Gasket - Closed
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WARNING Electrical Shock Hazard
Death or serious injury can result from failure to follow these
instructions.
• Service by a qualified service technician only.
• Disconnect power before servicing this product.
• Reconnect all grounding devices after service.
• Replace all parts and panels before operating.
NOTE: Installation
information for reference
only. See Installation
Instructions shipped with
product for complete
details and before
attempting to install.
Anti-tip bracket must be
attached to the floor or
wall to hold either right or
left rear leveling leg. Make
sure leveling leg re-engages the bracket when range is moved for any reason.
A child or adult can tip the range and be killed.
Verify the anti-tip bracket has been properly installed
and engaged.
Ensure the anti-tip bracket is re-engaged when the range
is moved.
Do not operate the range without the anti-tip bracket in
place and engaged.
Failure to follow these instructions can result in death or
serious burns to children or adults.
Tip-Over Hazard
WARNING
Adjacent Cabinet
Or Final Location
Of Range Side Panel Wall
Floor-Wood
Floor-Concrete
Rear
Leveling Leg
Bracket Side
Screw Must Enter
Wood or Metal
Bracket
Wall Plate
Attachment to Wall
or Floor
ELECTRONIC OVEN CONTROL
CAUTION:Components are electrically HOT on control when
voltage is connected to oven. The Electronic Oven Control system consists of the
control, daughter relay board, oven sensor, door and lock assembly.
NOTE: Temperature/Mode Selection necessary for operation of Relay contacts.
VOLTAGE MUST BE PRESENT ACROSS TERMINALS L1 TO N FOR CONTROL TO OPERATE.
*If abnormal reading is
observed, wiggle leads
at connector at rear of
cavity between broil
element pins. If any
variation, replace sensor.
CIRCUIT TERMINALS OHMS
UPPER
OVEN
LOWER
OVEN
Oven Sensor 4 to 5 4 to 10 1100Ω @ Rm Temp.*
28000Ω @ CLEAN Temp.
Door Unlatched 1 to 2 1 to 8 Open
Door Latched 1 to 2 1 to 8 0Ω
CONTROL VOLTAGE
OVEN SENSOR AND DOOR SWITCH OHMMETER TEST
(See “Motorized Door Lock Operation” for door switch function explanation.)
Remove power from oven. Make resistance measurement from side of sensor and lock
switch connector with exposed terminals disconnected from control.
*Oven light not working. Make the following checks:
• Check oven light bulb.
• Light is to come on when door is opened—check voltage across light socket.
Terminals should read 120VAC. If 0 volts, check jamb switch and wiring.
• Light is to come on when control light pad is pressed. K906 or K1 daughter board
should click. Check voltage from L1 to J6-3 on daughter board (upper) or J903-1
to N (lower). Should read 120VAC. If 0 volts, replace the control.
UPPER AND LOWER
OVEN SENSOR
AND LOCK SWITCH
CONNECTOR
Terminals Voltage
Broil COM (pin 1) to QTH NO (pin 2)
120 VAC all the time
L1-1 to N
L1-2 to N
L2-1 to N
L2-2 to N
L1-1 to BAKE1
240 VAC when cooking mode is active and
oven is not calling for heat
L1-1 to BROIL1
L1-2 to BAKE2
L1-2 to BROIL2
L1-2 to Conv2
J902-1 to N 120VAC when Convection fan is turning CCW
*J903-1 to N (Lower Cavity)
120 VAC when light is on
*L1 to J6-3 Daughter Board
(Upper Cavity)
J903-2 to N (Lower Cavity) 120 VAC locking or unlocking
J6-7 to N (Upper Cavity)

ERC FAILURE CODES
The oven may stop operating but not give an F code on the display immediately.
F codes are stored in nonvolatile eeprom memory until the same fault occurs twice
consecutively. After that, the F code will be displayed. F codes can be recalled by press-
ing together 3, 1 and 0. While F codes are displayed, pressing 8and 6together will
clear them. A fault must exist continuously for 5 minutes before an F code is recorded
(F2 and F8 are 1 minute or sooner). Press Cancel/ Off to exit failure code mode.
MOTORIZED DOOR LOCK
The motorized door lock assembly is located above the
oven. The assembly consists of
a lock motor cam and switch assembly,
lock hook, mounting plate and heat barrier.
Motorized Door Lock Operation
The lock motor is energized when the control
is set for the Clean and Clean Time is selected. The K12
(upper) or K905 (lower) relay contact will close and com-
plete the circuit that supplies
the voltage to the lock motor.
NOTE: To enable proper operation of the door lock, ensure that the door jamb switch
is closed.
NOTE: Display of Control will flash “LOCK” if the door switch is in the open position
(door open).
• The words “LOCK” will flash on and off in the display while the lock motor is in
motion. When the door is locked, the word “LOCK” remain illuminated in the display.
• CAM – The cam on the motor performs two functions:
1. Positions the lock hook in the door to prevent opening during clean operation.
2. Operates the lock switches which tell the control if the door is unlocked or locked
and ready for clean operation.
NOTE: The door lock switch will be open when the latch is locking. Once locked, the
door switch will be closed.
SPECIAL FUNCTIONS
The control has a section that can be entered to change how the control will work.
To enter this section, press and hold the Bake and Broil pads for 3 (three) seconds
and “UP OFFSEt” appears in the display. Scroll through options using the 3(up) and 8
(down) number pads. Select and confirm options using the 0number pad; cancel with
the 6number pad.
• Sabbath Mode – “SAbbAth” - Enables or disables Sabbath Mode.
• Clock Display – “Cloc diSP” - Turns clock on or off.
• Clock Configuration– “Cloc cFg” - Configures clock to 12- or 24-hour time.
• Auto Recipe – “Auto rEciPE” - Turns auto convection conversion on or off.
• Degree Unit – “dEg Unit” - Configures temperature to Celsius or Fahrenheit.
• 12-hour Shutoff – “12H ShutoFF” - Enables or disables 12-hour shutoff.
• End Tone – “End tonE” - Sets end tone to single or continuous beep.
• Sound – “Sound” - Adjusts volume level to low “Lo”, medium “Reg”, or high “Hi”.
• Lower Oven Offset – “Lo OFFSEt” - Adjusts temperature up or down by up to 35º F
for lower oven.
• Upper Oven Offset – “UP OFFSEt” - Adjusts temperature up or down by up to 35º F
for upper oven.
The controls may be locked out by pressing the Lock Control pad for 3 seconds;
display will show “Loc On”. It may be unlocked by pressing the Lock Control pad for 3
seconds again; display will show “Loc Off”.
• If a button is pressed while the control is locked, “Loc On” will show in the display.
• The Cancel/Off pad will always work, regardless of whether the control is locked.
Failure
Code
Meaning Correction
F2.0, F2.1 Upper Oven temperature
inside oven cavity as
measured by sensor
over 650°F unlatched or
915°F latched.
a) Welded relay contacts
b) Airflow to rear of unit
c) High resistance in oven sensor leads/ connectors
(especially at sensor in rear)
F2.2, F2.3 Lower Oven temperature
inside oven cavity as
measured by sensor
over 650°F unlatched or
915°F latched.
a) Welded relay contacts
b) Airflow to rear of unit c) High resistance in oven sensor
leads/ connectors (especially at sensor in rear)
F3.0 Shorted Upper oven
sensor (under 950 ohms)
a) Disconnect power. Disconnect sensor harness from
control. Measure sensor resistance (white leads) to be -1080
ohms at room temperature with 2 ohms per degree change.
b) Separate sensor from harness to determine fault.
F3.1 Open Upper oven sensor
(over 2900 ohms)
a) Disconnect power. Disconnect sensor harness from
control. Measure sensor resistance (white leads) to be -1080
ohms at room temperature with 2 ohms per degree change.
b) Look for damaged harness terminals if not a bad sensor.
F3.2 Shorted Lower oven
sensor (under 950 ohms)
a) Disconnect power. Disconnect sensor harness from
control. Measure sensor resistance (white leads) to be -1080
ohms at room temperature with 2 ohms per degree change.
b) Separate sensor from harness to determine fault.
F3.3 Open Lower oven sensor
(over 2900 ohms)
a) Disconnect power. Disconnect sensor harness from
control. Measure sensor resistance (white leads) to be -1080
ohms at room temperature with 2 ohms per degree change.
b) Look for damaged harness terminals if not a bad sensor.
F7.0, F7.2,
F7.3
Shorted key matrix. OFF
key or Stuck Key
Replace control.
F8.0, F8.1 EEPROM data shift failure If repeated, replace control.
F9.0, F9.1,
F9.4
Upper door latch
changed state
unexpectedly
Check upper door latch assembly & welded relay
F9.2, F9.3,
F9.5
Lower door latch
changed state
unexpectedly
Check lower door latch assembly & welded relay
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CONVECTION FAN
Symptom Possibility Correction
No fan operation Open winding as indicated by ohm
check red to grey and blue to grey
(approx. 60 ohms each)
Replace motor.
Fan loud Loose shaft nut Tighten shaft nut. Do not bend blade.
Fan loud Convect cover screws or cavity
screws loose
Tighten. Use larger screw if stripped.
No fan operation Check voltage CCW to N – should
read 120VAC in Convection Bake.
• If no voltages, replace ERC.
• If voltages OK, check harness or
winding resistance.
No fan operation Shaft or blade rubbing on oven liner Loosen screws/readjust position/tighten.
No fan operation Jamb switch NO to C is open Replace jamb switch or check harness.
NOTES:
• QUARTER TOP HEAT – There is an additional relay which connects the L1 side of Broil
to neutral instead of L1, therefore applying 120V to the broil element during select
modes or portions of modes. Quarter top heat is on with the bake element during the
following cycles: Bake preheat & steady state, Convection bake preheat and steady
state, Convection roast preheat and steady state and Self Clean stage 2.
• BAKE/TIME BAKE – The bake, broil and convection elements cycle during preheat
with one element on at a time. The convection fan also operates while preheating
and will turn off once the set temperature is reached. Once the bake preheat
temperature is reached, the bake and broil elements cycle for the balance of the
bake operation with one element on at a time.
• CLEAN – The broil element is on only during the first 30 minutes or until the sensor
reaches 750°F. During the balance of the clean cycle, the oven will cycle between
the bake and broil units.
• STEAM CLEAN – Bake unit turns on continuously for 3 minutes at the start of the
cycle. The bake element turn off after 3 minutes and no additional heat is generated
for the balance of the cycle.
• See schematic for wattage values
L1
BL
ACK
K908
BROIL
BROIL
BAKE
K907
QTH
K909
BAKE
K910
CONV
CONV
L2
RED
DLB
K915
N
WHITE
L1
BL
ACK
L2
RED
K7
UPPER
DLB
K3
UPPER BROIL
K18
UPPER BAKE UPPER BAKE
UPPER BROIL
KEY PANEL TEST
1. Touch each pad on the Key Panel.
2. If the Key Panel is functioning properly, the following should occur:
• Bake, Broil, Convection Bake, Convection Roast, Warm Self Clean, and Timer
Modes – An audible tone sounds and the display shows the mode of the operation
selected.
• Cancel/Off, Cook Time and Delay Time – An audible tone sounds and the display
shows the time of day.
• Number pads can only be used after another function has been selected.
• Oven Light - Oven light turns on. Audible tone. Relay click.
Troubleshooting Door Lock
If the door will not lock, check that the door jamb switches work. If lights are good,
then when the doors are both closed the lights should turn off. If lock icon flashes,
indicating the oven is trying to lock the door, check for voltage at the lock motor
(on the rear of the cavity). If 120V is present, turn off power, disconnect harness and
check the lock motor for resistance using ohmmeter. Lock motor should be around
3400Ω. If not, replace lock motor.
Upper Oven
Lower Oven
SERVICE MODE
Power must be cycled within 2 hours before user can enter Service Mode. To enter
Service Mode press and hold the 1 & 5 pads for 2 seconds. Entering into service mode
will turn off all other active modes. When the Service Mode is entered, the word “tESt”
will appear in the time display. If a key is pressed while another load is already on, the
control will turn off the first load and then activate the new load. Note that for the Self
Clean and Self/Steam Clean keys, the control will ignore additional Self and Self/Steam
Clean key presses and not keep track of state for every time the corresponding key is
pressed. The Door Lock will only seek the opposite state when the key is pressed while
in a known state. DLB will always be energized while in Service Mode. All keys will play
the “Touch” tune upon press. Each key press will turn on the associated load. Each
load will turn off when one of the following conditions is met: the same key is pressed
again; another key has been pressed; or 15 seconds has passed after the key has
been released. The loads and associated keys for the control are listed below:
Key Action - Upper Action - Lower
Bake Energize Bake; “Bake” illuminated Energize Bake; “Bake” illuminated
Broil Energize Broil; “Broil” illuminated Energize Broil; “Broil” illuminated
Self Clean Cycle Door Locks positions; “Door” and Lock
icons flash (1/2 second ON 1/2 second OFF)
during transition, ON solid when locked, OFF
when unlocked
Cycle Door Locks positions; “Door” and Lock
icons flash (1/2 second ON 1/2 second OFF)
during transition, ON solid when locked, OFF
when unlocked
Convection
Bake
No Action Energize Convection Bake, Convection Fan
Enable; “Conv” and “Bake” illuminated
Cook Time Read and show Upper oven sensor value
(in degrees F)
Read and show Lower oven sensor value
(in degrees F)
Warm No Action Energize Broil; “Warm” (rightmost Warm
icon) illuminated
Cancel/Off Reset the control Reset the control
Key Action
1 Energize Convection Fan (turn fan)
3Display control Application version
4Display control Parametric version
Oven Light Energize Oven Light relay(s)
Timer On/Off Light up all LED segments. It is normal for some LED segments to turn off after some
time. For example, if the door is unlocked,
the lock LEDs will not stay on the full 10 seconds

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MODEL NUMBERS
JB860
IMPORTANT
SERVICE INFORMATION
DO NOT DISCARD
31-17195-2 10-15 GE
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