Wiring Diagram
Electronic Oven Control (EOC) Fault Code Descriptions
Code Condition / Cause Suggested Corrective Action
F10
Control has sensed a potential
runaway oven condition, control may
have shorted relay, and/or RTD sen-
sor probe may have gone bad.
Check RTD sensor probe and replace, if necessary. If oven is overheating, disconnect power. If oven continues to overheat
when power is reapplied, replace the Electronic Oven Control (EOC).
F11
Shorted Key: A key has been detect-
ed as pressed (for a long period). Will
be considered a shorted key alarm
and will terminate all oven activity.
1. Press STOP key.
2. If the problem persists, replace the EOC.
F13
Control’s internal checksum may be
corrupted.
• Press CLEAR key. - Disconnect power, wait 10 seconds, and reapply power. If fault returns upon power-up, replace
EOC.
F14
Misconnected at cables. No commu-
nication between oven and controls.
1. Disconnect power. Verify the at cable connection between the touch panel or membrane and the EOC on P12 and
P13.
2. If the problem persist, replace the EOC.
F15
Control self-check failed Replace the EOC display board
F30
Open RTD sensor probe/ wiring
problem. Note: EOC may initially
display an “F10,” thinking a runaway
condition exists.
1. Check wiring in probe circuit for possible open or short condition.
2. Check RTD resistance at room temperature (compare to probe resistance chart). If resistance does not match the chart,
replace the RTD sensor probe.
3. Let the oven cool down and restart the function.
4. If the problem persists, replace the EOC.
F31
Shorted RTD sensor probe /wiring
problem.
F33 Meat probe temperature sensor
shorted or too hot
1. The error is triggered if the meat probe sees a temperature in excess of 392°F. Make sure the meat probe was not
used in such way that it could have seen such temperature. If the tip of the probe is not inserted in the meat it will see
the cavity temperature, which can be higher than 392°F (depending on the setpoint) and trigger the alarm.
2. When the meat probe is connected to the socket inside the oven cavity, if the meat probe is not fully inserted into the
socket it may short the contacts and cause the error. Make sure the probe is inserted as much as it can.
3. Verify meat probe resistance at room temperature. Compare to meat probe resistance chart. If the meat probe does not
match the chart, replace it.
4. If the above steps failed to correct the problem, replace the user interface board.
F43 The cooling fan speed, as read by the
tachometer input of the EOC-display
board, is abnormally too slow.
Determine rst if the problem appears to be caused by a cooling fan not turning or turning slowly or by a problem with the
sensing of the fan speed. Start a Bake and check during the rst 15 seconds if the fan is turning (should feel air owing through
the vent above the upper oven door).
If the fan does not appear to be turning or turn slowly check the 120VAC at the fan. If 120VAC is present at the fan motor but the
fan does not turn replace the fan motor. If 120VAC is not present at the fan motor when a Bake is started check the connection
to the relay board (J3 pin 7) and Neutral: is there 120VAC on J3 pin 7? Does it reach the fan motor? Is the other terminal of the
fan motor connected to Neutral? If the harness or relay board are faulty replace them.
If the fan appears to be normally turning but an F43 error code is generated, it means there is a problem with the reading of the
fan speed sensor. Make sure the connection of the fan speed sensor is properly made (refer to wiring diagram), between the
sensor on the fan and the EOC-display board.
For trouble-shooting purposes, it is possible to enter a test mode that will indicate on the display the reading of the fan speed in
RPM: to enter the test mode, power-up the unit and within 30 seconds press and hold the upper oven Bake and Broil keys for 3
seconds (until you see all segments in the screen illuminated). Once in the test mode, pressing the upper oven Light key once will
display the fan speed in RPM. In normal client mode the F43 error is generated for a fan speed below approximately 700 RPM.
If the connection of the sensor is good but there is still an F43 error code generated the problem can be caused by the fan+sensor
assembly or by the EOC- display board. Check the fan sensor (located near shaft of the fan, next to connector) for damage. If
problem persists replace both the fan+sensor assembly and the EOC-display board.
F44 The cooling fan speed, as read by the
tachometer input of the EOC-display
board, is abnormally too fast.
Inspect the cooling fan. Does it appear to be turning normally (air ow, noise)? Verify the fan blade is well assembled.
Verify there is nothing blocking the air ow of the fan (that could make the fan turn faster).
Check the 120VAC voltage on the fan. A voltage higher than 120VAC + 10% could make it go too fast.
Make sure the connection of the fan speed sensor is properly made (refer to wiring diagram), between the sensor on the fan
and the EOC-display board.
For trouble-shooting purposes, it is possible to enter a test mode that will indicate on the display the reading of the fan speed in
RPM: to enter the test mode, power-up the unit and within 30 seconds press and hold the upper oven Bake and Broil keys for 3
seconds (until you see all segments in the screen illuminated). Once in the test mode, pressing the upper oven Light key once will
display the fan speed in RPM. In normal client mode the F44 error is generated for a fan speed above approximately 2500 RPM.
If problem persists replace both the fan+sensor assembly and the EOC-display board.
F62 Missing zero-cross signal. The 60Hz synchronization signal (zero-cross) is sent by the EOC-Relay Board to the EOC-Display Board. Verify rst the connection
between the EOC-Relay Board on connector J2 pin 5 and the EOC-Display Board on connector P2 pin 5 (check for continuity).
If wiring is good, replace the EOC-Relay Board.
If problem persists, replace the EOC- Display Board.
F90
to
F94
Door motor mechanism failure.
1. Turn off power for 10 seconds, then turn on power. Test the door latch again (try to start a Clean cycle).
2. If it fails, check wiring of Lock Motor, Lock Switch and Door Switch circuits.
3. Unplug the lock motor from the board and apply power (L1) directly to the Lock Motor. If the motor does not rotate,
replace Lock Motor Assembly.
4. Check Lock Switch for proper operation (do the contacts open and close, check with ohmmeter). The Lock Motor may
be powered as in above step to open and close Lock Switch. If the Lock Switch is defective, replace Motor Lock Assem-
bly.
5. If all above steps fail to correct situation, replace the EOC.
Note: Generally speaking, F1X implies a control failure, F3X an oven probe problem, and F9x a latch motor problem.
NOTICE: This service data sheet is intended for use by persons having electrical
and mechanical training and a level of knowledge of these subjects generally
considered acceptable in the appliance repair trade. The manufacturer cannot
be responsible, nor assume any liability, for injury or damage of any kind arising
from the use of this data sheet.
IMPORTANT NOTE: This unit includes an EOC (electronic oven control). This
board is not eld-repairable.
SAFE SERVICING PRACTICES
To avoid the possibility of personal injury and/or property damage, it is important
that safe servicing practices be observed. The following are some, but not all,
examples of safe practices.
1. Do not attempt a product repair if you have any doubts as to your ability to
complete it in a safe and satisfactory manner.
2. Before servicing or moving an appliance, remove power cord from electric
outlet, trip circuit breaker to Off, or remove fuse.
3. Never interfere with the proper installation of any safety device.
4. Use only replacement parts specied for this appliance. Substitutions may
not comply with safety standards set for home appliances.
5. Grounding: The standard color coding for safety ground wires is green
or green with yellow stripes. Ground leads are not to be used as current
carrying conductors. It is extremely important that the service technician
reestablish all safety grounds prior to completion of service. Failure to do so
will create a potential hazard.
6. Prior to returning the product to service, ensure that:
• All electric connections are correct and secure.
• All electrical leads are properly dressed and secured away from sharp
edges, high-temperature components, and moving parts.
• All uninsulated electrical terminals, connectors, heaters, etc. are ade-
quately spaced away from all metal parts and panels.
• All safety grounds (both internal and external) are correctly and se-
curely reassembled.
• All panels are properly and securely reassembled.
OVEN CALIBRATION
Set the electronic oven control for normal baking at 350°F. Allow oven to preheat
to set temperature. Obtain an average oven temperature after a minimum of ve
cycles. Press the STOP key to end the Bake mode.
IMPORTANT
DO NOT REMOVE THIS BAG
OR DESTROY THE CONTENTS
WIRING DIAGRAMS AND SERVICE
INFORMATION ENCLOSED
REPLACE CONTENTS IN BAG
Resistance (ohms)
1000 ± 4.0
1091 ± 5.3
1453 ± 8.9
1654 ± 10.8
1852 ± 13.5
2047 ± 15.8
2237 ± 18.5
2697 ± 24.4
Open circuit/infinite resistance
RTD SCALE
Temperature °F (°C)
32 ± 1.9 (0 ± 1.0)
75 ± 2.5 (24 ± 1.3)
250 ± 4.4 (121 ± 2.4)
350 ± 5.4 (177 ± 3.0)
450 ± 6.9 (232 ± 3.8)
550 ± 8.2 (288 ± 4.5)
650 ± 9.6 (343 ± 5.3)
900 ± 13.6 (482 ±7.5)
Probe circuit to case ground
p/n 807436804 REV A (2017/06)
SERVICE DATA SHEET
Appliance with 6xx Electronic Oven Control
TEMPERATURE ADJUSTMENT
1. While in a non-cooking mode, press and hold the Bake key for 6 seconds.
2. The current calibration offset (temperature adjustment) should appear in the
temperature display.
3. Use the number keys (0-9) to enter the desired amount of adjustments (up
to 35°F).
4. Press the Self Clean key to change the sign of the adjustment to a (-), if
necessary. A positive adjustment will not display a sign.
5. Once the desired adjustment (-35° to 35° F) has been entered, press the
Start key to accept the change or the Cancel key to reject the change.
Note: Changing calibration affects all baking modes. The adjustments made will
not change the self-cleaning temperature.
COOLING FAN AND FAN SPEED SENSOR
This double wall oven is equipped with a cooling fan located on top of the upper
cavity. The fan is controlled by the EOC. The cooling fan is activated anytime the
oven is used for cooking or cleaning. It may also remain ON for some time after
the oven has been used, until the oven cavity has cooled down enough. The fan
motor is energized using relay K16 on the EOC-relay board.
The oven is equipped with a sensor that monitors the speed of the cooling fan.
The sensor is connected to the EOC - display board, where the speed is read.
Anytime the cooling fan is supposed to be active, the EOC checks the speed
against a “speed too low” and a “speed too high” threshold. If the speed falls out
of range, the EOC will generate an F43 error code (detecting fan is turning too
slowly or not turning) or F44 error code (detecting fan is turning too fast).
DATA SHEET ABBREVIATIONS AND TERMINOLOGY
DLB - Double Line Break
EOC - Electronic Oven Control
LED - Light-Emitting Diode
MDL - Motor Door Latch
PS - Power supply board (PS1, PS2, etc)
RTD - Resistance Temperature Detector/Oven Probe
TCO - Thermal cut out, also “thermo disc” or “thermal limiter”
VSC - Variable Speed Control