Frigidaire FGEW3066UD, FGEW3066UF Diagram

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

LATCH MOTOR

DOOR SWITCH

ELECTRIC OVEN WITH MODULAR OVEN CONTROLS

SERVICE DATA SHEET

NOTICE: This service data sheet is intended for use by persons having electrical and me-

chanical 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 specied 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 adequately

spaced away from all metal parts and panels.

• All safety grounds (both internal and external) are correctly and securely reas-

sembled.

• All panels are properly and securely reassembled.

Temperature Adjustment

Refer to the Use & Care Manual for directions on how to adjust the oven temperatures.
Changing calibration affects all baking modes. The adjustments made will not change the
self-cleaning temperature.

Modular Control Systems

This appliance is equipped with a modular system of controls. The modular system consists
of various boards which communicate with one another to drive cooking functions. Oven
functions, if available, operate through an oven user interface (UI or UIB) and an oven relay
board. Cooktop functions, if available, operate through a cooktop UI/UIB and a cooktop

relay board. There may be additional boards which work within the system to drive specic

functions (refer to the schematics and diagrams and this sheet). Low voltage operating and
communications power for the modular boards is provided through the wiring schemes.
The boards that generate low voltage operating and communications power depend upon
the individual control system (refer to the schematics and diagrams on this sheet). These

voltages are only the operational voltages. Do not use these voltages as conrmation of

communication between the boards. Communication occurs through software programming
on each board. This communication is not detectable by volt ohmmeters. The programming
is self-monitored and the UI displays will show error codes based on detected failures. The

individual boards are not eld repairable. See the schematics and diagrams included on this
sheet for more unit-specic details.

OVEN CONTROL

RELAY BOARD

(OVC)

MACS

OVEN CONTROL

(MARS)

I2C

TOUCH PANEL
(BENDER HMI)

SELF CLEAN CATALYST (OPT)

CONVECTION FAN HIGH

J2 COMM TO COOLING

FAN SPEED SENSOR

(OPT)

CONV

FAN

HIGH

1

J4

J3 TO USER INTERFACE BOARD

1

MARS BOARD

1

1

CONV ELEMENT (OPT)

BAKE ELEMENT

L1L1

1 1

CONV

COOL

COOL

OVEN

FAN

LIGHT

LOW

CATALYST

CONV ELEMENT

BAKE ELEMENT

MEAT PROBE (OPT)
TEMPERATURE PROBE

1

MOTOR DOOR LATCH SWITCH
COMMON

MDL

FAN
LOW

FAN

HIGH

PROGRAMMING HEADER

1

CONVECTION FAN LOW (OPT)
COOLING FAN HIGH SPEED
COOLING FAN LOW SPEED
OVEN LIGHT
L1
NEUTRAL

DLB BROIL

L2 OUT/THERM
L2 IN

L1

NEUTRAL

COM L1
BROIL

ELEMENT

1

p/n A00980651 Rev A (2018/10)

MEAT PROBE TEMPERATURE VS RESISTANCE

Temperature °F (°C) Resistance (Kohm)

77 (25) 50.0 ± 7%

122 (50) 18.0 ± 4.9%

176 (80) 6.3 ± 3.3%

212 (100) 3.4 ± 4.6%

ELECTRONIC OVEN CONTROL (EOC) FAULT CODE DESCRIPTIONS

Fault
Code

F01
F02
F04
F05

F03 The oven user interface board is

F10 Oven temperature runaway: the

F11 Stuck key: a key has been detected

F12 Keyboard conguration alarm: the

F13 Data written to non-volatile memory

Description of Error Code Suggested Corrective Action

Touch panel failure Disconnect power, wait 30 seconds and reapply power. If fault returns upon power-up replace the touch panel.

incorrectly congured.

cavity temperature has been detect­ed in excess of the maximum safe
operating temperature.

has pressed continuously for 30
seconds or more.

oven user interface board received
from the touch panel a key code that
does not match the key map.

has failed verication

Replace the oven user interface board. Make sure you install the latest revision available for this model.

1. If oven is overheating, disconnect power. Check oven temperature probe (RTD) and replace if necessary.

2. If the oven temperature probe is good and if oven continues to overheat when power is reapplied, replace the
oven relay board.

1. If a key was pressed inadvertently for a long time this error code will be displayed. Make sure there is nothing
(water, utensils) in contact with the keyboard. The fault code should go away once the key is released and

the Stop key is pressed. If the F011 error comes back when a key is pressed it means the error condition

is still there. If the F011 error does not come back it means the error condition is gone and the oven can be
used.

2. If the fault code cannot be cleared, test the wiring harness between oven user interface board (connector
I2C1 or I2C2) and touch panel (connector I2C1 or I2C2).

3. If the fault code cannot be cleared and the wiring is good, the touch panel is most likely defective: replace the
touch panel.

4. If changing the touch panel did not x the problem replace the oven user interface board.

1. Verify the unit has the proper oven user interface board and touch panel, based on the model number and
parts catalog.

2. Replace the oven user interface board.

3. If the problem persists replace the touch panel.

Disconnect power, wait 30 seconds and reapply power. If fault returns upon power-up replace the oven user

interface.
F15 Keyboard error Disconnect power, wait 30 seconds and reapply power. If fault returns upon power-up replace the touch panel.
F17 The oven user interface board is

unable to congure the touch panel.

1. Disconnect power to the unit, wait 30 seconds, then reapply power.

2. If fault returns, verify harness going to I2C1 or I2C2 connector of the touch panel.

3. Verify the unit has the proper oven user interface board and touch panel, based on the model number and
parts catalog.

4. If fault persists, replace the oven user interface.

5. If fault persists, replace the touch panel.

F18 Oven relay board failure (wiggler) Replace the oven relay board.
F19 The oven user interface board is

F22 Communication failure between the

F23 Communication failure between the

F25
F27

F28
F29

F30 Open oven temperature sensor

F31 Shorted oven temperature probe

F33 Meat probe temperature sensor

unable to congure the oven relay

board

oven user interface board and the
oven relay board

oven user interface board and the
glass touch panel

The communication between the
over user interface and the oven
relay board cannot be initiated.

The communication between the
over user interface and the touch
panel cannot be initiated.

(RTD)

(RTD)

shorted or too hot

1. Disconnect power to the unit, wait 30 seconds, then reapply power.

2. If fault returns, verify connection between the oven user interface board (MACS1 or MACS2 connector) and
the oven relay board (connector J3 or J4).

3. Verify the unit has the proper oven user interface board and oven relay board, based on the model number
and parts catalog.

4. If fault persists, replace oven user interface board.

5. If fault persists, replace the relay board.

1. Disconnect power, wait 30 seconds and reapply power. Check if error condition is still there.

2. Test wiring harness between oven user interface board (connector MACS1 or MACS2) and oven relay board
(connector J3 or J4).

3. If wiring harness is good replace oven relay board.

4. If the problem persists replace the oven user interface.

1. Disconnect power, wait 30 seconds and reapply power. Check if error condition is still there.

2. Test wiring harness between oven user interface board (connector I2C1 or I2C2) and touch panel (connector
I2C1 or I2C2).

3. If wiring harness is good replace touch panel.

4. If the problem persists replace the oven user interface.

1. Disconnect power to the unit, wait 30 seconds, then reapply power.

2. If fault returns, verify connection between the oven user interface board (MACS1 or MACS2 connector) and
the oven relay board (connector J3 or J4).

3. Verify the unit has the proper oven user interface board and oven relay board, based on the model number
and parts catalog.

4. If fault persists, replace relay board.

5. If fault persists, replace the oven user interface board.

1. Disconnect power to the unit, wait 30 seconds, then reapply power.

2. If fault returns, verify touch panel is connected (verify harness going to I2C1 or I2C2 connector) and is getting
power from the oven user interface.

3. Verify the unit has the proper oven user interface board and touch panel, based on the model number and
parts catalog.

4. If fault persists, replace the touch panel.

5. If fault persists, replace the oven user interface.

1. Check probe circuit wiring for possible open or short condition.

2. Verify RTD resistance at room temperature (compare to probe resistance chart). If resistance does not match
the chart, replace the RTD probe.

3. If the problem persists replace the oven relay board.

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 oven relay board.

F45 Cooling fan speed too low. 1. Check if the cooling fan blades are blocked.

2. Conrm tachometer harness is connected on fan and on oven control.

3. Replace cooling fan.

4. Replace oven control.

ELECTRONIC OVEN CONTROL (EOC) FAULT CODE DESCRIPTIONS

Fault
Code

Description of Error Code Suggested Corrective Action

F46 Cooling fan speed too high. 1. Check for mechanical obstruction in the air path.

2. Replace cooling fan.

3. Replace oven control.

F50 A/D Out of Range: the oven relay

F90 Motor Door Lock mechanism failure.

F95 Motor Door Lock mechanism failure.

F96 The oven door has been detected

board is unable to read the status of
the switches (door, MDL)

The oven control does not see the
Motor Door Lock running.

The Motor Door Lock does not stop

running or the Lock Switch sends an

invalid signal.

open during a Self Clean cycle.

CIRCUIT

ANALYSIS

MATRIX

Bake

P7 (K3)

Elements

BroilK2Conv.

1. Check to ensure that the connections between the door switch, MDL and temp probes are properly connect­ed. This includes all splices and junctions.

2. If the above step failed to correct the problem, replace the oven relay board.

1. Disconnect power to the unit, wait 30 seconds, then reapply power. Try again to make the door lock or unlock
(ex: initiate a Lockout or a Clean cycle).

2. Check if the Lock Motor is running or not. If it is not running, test the wiring between the Lock Motor and the
oven relay board. If the wiring is good, check if there is 120VAC at the motor when it is expected to run to
see if the failure originates from a bad motor (120VAC present but not turning) or a problem with the relay
board (J20 pin 10 on the oven relay board is the output to the Lock Motor). The Lock Motor can also be test-

ed by applying 120VAC directly to the motor (unplug it from the relay board rst). If the Lock Motor does not

run when 120VAC is applied replace the Lock Motor Assembly. If it is the relay board that does not provide
120VAC to the Lock Motor replace the oven relay board.

3. If the Lock Motor is running but the oven control cannot nd the locked or unlocked position (ex: motor turns

continuously until F90 fault code is generated) the Lock Switch needs to be veried. Check wiring between
Lock Switch and oven relay board. Verify with ohmmeter if the switch makes contact properly (verify con­tinuity with ohmmeter when the switch is pressed). If the Lock Switch is defective replace the Motor Lock

Assembly.

4. If all above steps failed to correct the situation, replace the oven relay board.

1. The problem can be caused by a faulty Lock Switch or by a defective oven relay board. If the Motor Door
Lock is always running (as if the relay controlling it is stuck closed) replace the oven relay board.

2. If the motor is not always running replace the Motor Lock Assembly.

1. This error occurs if the door switch has lost its contact during a Self Clean cycle. Make sure the oven door
closes well and fully presses on the door switch plunger when the door is locked, and no one attempted to

pull on the oven door during the Self Clean cycle.

2. Test continuity of wiring between the door switch and the oven relay board, make sure the door switch is well
connected. With an ohmmeter, verify the switch is closed when the plunger is pressed. If the door switch is
found to be defective replace the door switch.

3. If the switch and wiring are good and the problem persists, replace the oven relay board.

Door

Switch

J5-7, J5-9

DLB

L2 out

(K1)

Cooling Fan
Low J20-7 (K10)
High J20-8 (K11)

P8 (K6)

Door Motor

J20-10 (K13)

Light

J20-6 (K9)

Conv. Fan

Low J20-9 (K12)

High J19-3 (K6)
Bake X X X X X X X
Broil X X X
Conv. Bake X X X X X X X
Conv. Roast X X X X X X X
Clean X X X X X X
Locking X
Locked
Unlocking X
Unlocked
Light X
Door Open X X
Door Closed
Air Guard

X X X
(with key press)
NOTES: Bake, broil, and convection elements alternate cycles. Convection fans may run during preheat and may run intermittently during non-convec­tion functions to improve cooking performance.

Catalyst

“Air Guard”

J19-2 (K5)

X