JGB650 SINGLE OVEN
31-17081 06-13 GE
OVEN TEMPERATURE CALIBRATION
The bake temperature can be adjusted from its factory calibration
(
+
or
-
)
35˚F in 1˚ increments.
1. Press and hold both the
BAKE
and
BROIL
pads for about 2 seconds
until the display shows
SF
.
2. Press the
BAKE
pad. The current offset setting is in the display.
3. Enter the desired temperature offset using the number pads.
4. Use the
BAKE
pad to toggle between
+
/
-
.
5. Press
START
key. The display will return to
Time
or
Day Clock
.
BAKE BURNER REMOVAL
• Remove oven door and drawer.
• Remove the screws on the oven floor at the back of the oven cavity and
remove oven floor/deflector.
• Remove 1/4” hex head screws from the bracket holding the burner to
the back wall of the range.
• Remove the screw at the front of the burner.
• Disconnect the igniter wires.
• Remove the Bake Burner.
BACKGUARD DISASSEMBLY
• Remove screws located on the back of the backguard. (There is a set of
screws on each side.)
• Remove the torx screw on the front inside corner of backguard (1 on
each side).
• Gently lift backguard off.
• Be sure to reassemble rear cover and backguard per original assembly.
OVEN BURNER IGNITION SYSTEM
The ignitor is a “Norton” style rectangular glowbar. The ignition circuit
consists of the electronic control, the igniter, and the oven safety valve
(gas valve). The three components are wired in series.
The most important points to know about the ignition system are:
1. THE IGNITOR RESISTANCE DECREASES AS THE IGNITER SURFACE
TEMPERATURE INCREASES.
2. THE SAFETY VALVE OPERATES BY CURRENT, NOT VOLTAGE.
From a cold start, the ignitor needs 30-60 seconds, with voltage applied, to
reduce the electrical resisteance enough to provide a minimum of 2.9 amps
of current flow in the series circuit. This is the required current flow needed
for the safety valve to open to supply gas to the burner. The glowbar should
provide a steady current flow of between 3.2 to 3.6 amps flowing in the circuit.
The igniter will remain energized at all times during burner operation. If the
igniter glows red but does not draw at least 2.9 amps, the fault is usually with
the igniter, not the valve. Always check the oven shut-off valve for a “No Oven”
condition.
CONTROL SYSTEMS
There are three versions of the control used on gas ranges. Versions 1, 2 and
3. Features and appearance will vary by model:
Version 1
Has
Delay Start
and
Cook Time
features.
Version 2
Has
Delay Start
,
Cook Time
and
Self Clean
features.
Version 3
Has
Delay Start
,
Cook Time
,
Self Clean
and
Convection Bake
features.
GLOWBAR IGNITION CIRCUIT
L1
N
120 V
T´STAT
T
1 to 1.2 Ohms
GLOW BAR
IGNITER
OVEN
VALVE
IGNITER GLOWBAR REPLACEMENT
The igniter glowbar and its protective cage are one assembly on
this Norton style igniter. The round Carborundum igniter CANNOT be
substituted for the rectangular Norton Igniter.
• Remove the burner from
the oven. See
Bake Burner
Removal
in this manual.
• Remove the 1/4” hex head
screws securing the igniter
to the burner.
• Remove the old igniter.
• Install the new igniter and
re-install the two 1/4” hex
head screws to secure the
igniter.
• Reinstall the burner.
WIRING DIA
GRAM
W
ARNING
P
ow
er must be
disconnect
ed befor
e ser
vicing this
appliance.
222D8441P002
FAILURE MEANING
CORRECTION
CODE
SHORTED
CANCEL/OFF KEY
Power down then power up the range. If the fault
condition reappears within 15 minutes–REPLACE
CONTROL.
OVEN
OVERTEMPERATURE
CONDITION
• Door unlocked–oven
exceeded ~620°F
• Door locked–oven
exceeded ~930°F
• Door latch unlocked
while oven in excess
of ~620°F
1.
If no overtemperature condition occurred–
check all
contacts and connections in sensor circuit. Eliminate
excessive resistance in sensor circuit due to increased
contact/connector resistance.
2.
If overtemperature condition occurred–
look for
welded relay contacts on bake, broil, or double-line-
break relays. If relay contact welding is confirmed–
REPLACE CONTROL.
3. Ensure Door Latch stays locked for duration of CLEAN
cycle.
F2
OPEN OVEN SENSOR
Sensor resistance
>2900 ohms
Disconnect sensor/latch connector from the control.
Measure sensor circuit resistance at sensor/lock switch
connector (should be ~1100 ohms at room temperature).
Ensure each sensor lead to chassis ground resistance is
infinitely high.
If open or short circuit is detected:
1. Look for cut or pinched sensor harness wire.
2. Look for sensor leads shorted to chassis ground.
3. Look for loss of terminal contact in the harness and at
the control.
4. Check sensor resistance directly at sensor harness
connector (away from the control). If reading is
abnormal–REPLACE OVEN SENSOR.
If sensor circuit appears to be normal:
1. Reinstall sensor/lock switch connector on the control
and measure sensor resistance at solder joints on
the back of the control circuit board. If abnormal
resistance reading is observed–RESTORE CONTACT
PRESSURE OR SENSOR/LOCK SWITCH CONNECTOR.
If corrective actions above do not eliminate the
problem–
REPLACE CONTROL.
F3
SHORTED OVEN
SENSOR
Sensor resistance
<950 ohms
F4
SHORTED MATRIX
KEY
Power down then power up the range. If the fault
condition reappears within 15 minutes–REPLACE
CONTROL.
F7
EEPROM ERROR
Power down then power up the range. If the fault
condition reappears within 5 minutes–REPLACE
CONTROL.
F8
CONTROL
SUPERVISORY
CIRCUIT FAILURE
REPLACE CONTROL.
F5
F0
T09 FAULT CODES
OVEN SENSOR
1100 OHMS@ROOM TEMP
2650 OHMS@CLEAN TEMP
OVEN SENSOR
PINS 4 & 5
DOOR LOCK CIR.
PINS 1 & 3
DOOR LOCK CIR.
PINS 1 & 3
PIN 2 BLANK
C
NC
LCH. SW.
LATCH
BI-METAL
(THERMAL
LOCK)
LOCK
SWITCH
UNLOCK
LOCK
LOCK
COLOR
SYMBOL
LAST
NUMBER USED
RED
R3
WHITE
W1
0
ORANGE
O2
YELLOW
Y2
VIOLET
V2
BLU
EN
2
GRAY
S-
BROW
NC
-
BLACK
B-
BLACK/WHITE
B/W
-
200
C
200
C
R
ELECTRONIC CONTRO
L
COM
150
C
150C
MD
SW
V
150C
V
V
150°C W-
7
VALV
E
CONTROL
IGNITOR
BAK
E
R
150
C
RF
SW
150C
V
V
BROI
L
IGNITOR
R
SENSOR
OVEN
150
C
1
2
D
LF
SW
NC
LR
150C
LR
SW
V
V
ELECTRODE
MD
Y-2
250
C
200
C
IGNITIO
N
MODULE
ELECTRODE
LCH SW
LF
O-2
1
250
C
1
W-9
5
W-
8
5
150
C
150
C
N-2
W-6
Y-1
2
1
E
W-8
W-
9
200
C
200
C
150C
R
R-3
V-2
C
1
N-1
150
C
W-
2
125
C
150° C N-
2
W-5
O-
1
LIGH
T
OVEN
150
C
150
C
W-3
125
C
V-
1
R-2 125°
C
125
C
2
R-
2
W-4 125°C
125
C
B/
W
N
A
2
L1
1
B
G
Y-1 150°C
R-1 125°C
W-1 125°C
N-1 150°C
W-1
125
C
NO
F
B
W-10
0-1 150°C
125
C
R-
1
150
C
GND
105
C
GND
G
L
BR
BA
N
OL
W-1
W-2
W-6
W-5
150C
RR
SW
V
RR
200
C
ELECTRODE
RF
200
C
NOTES: ALL LEADS WITH DESIGNATION NUMBERS THAT ENTER COMMO
N
LEAD PATH( ) MUST BE TRACED TO THEIR TERMINATIONS. - - - -THIS CIRCUIT NOT IN ALL MODELS
.
W-3 125°C
V-1
N
L
125°C
