Frigidaire FFET2725PB, FFET2725PS, FFET2725PW, FFET3025PB, FFET3025PS Wiring diagram

Service Data Sheet

Appliance with Electronic Oven Control

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 field-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 specified 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 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 five cycles. Press the STOP key to end the Bake mode.

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

IMPORTANT

DO NOT REMOVE THIS BAG OR DESTROY THE CONTENTS

WIRING DIAGRAMS AND SERVICE

INFORMATION ENCLOSED

REPLACE CONTENTS IN BAG

RTD SCALE

Temperature °F (°C)	Resistance (ohms)
32 ± 1.9 (0 ± 1.0)	1000 ± 4.0
75 ± 2.5 (24 ± 1.3)	1091 ± 5.3
250 ± 4.4 (121 ± 2.4)	1453 ± 8.9
350 ± 5.4 (177 ± 3.0)	1654 ± 10.8
450 ± 6.9 (232 ± 3.8)	1852 ± 13.5
550 ± 8.2 (288 ± 4.5)	2047 ± 15.8
650 ± 9.6 (343 ± 5.3)	2237 ± 18.5
900 ± 13.6 (482 ±7.5)	2697 ± 24.4
Probe circuit to case ground	Open circuit/infinite resistance

p/n 807436801 ENGLISH Rev A (1303)

Electronic Oven Control (EOC) Fault Code Descriptions

	Code	Condition / Cause		Suggested Corrective Action
	F10	Control has sensed a potential run-	Check RTD sensor probe and replace, if necessary. If oven is overheating, disconnect power. If oven continues to
		away oven condition, control may	overheat when power is reapplied, replace the Electronic Oven Control (EOC).
		have shorted relay, and/or RTD
		sensor probe may have gone bad.
	F11	Shorted Key: A key has been	1.	Press STOP key.
		detected as pressed (for a long	2.	If the problem persists, replace the EOC.
		period). Will be considered a short-
		ed key alarm and will terminate all
		oven activity.
	F13	Control’s internal checksum may	•	Press CLEAR key. - Disconnect power, wait 10 seconds, and reapply power. If fault returns upon power-up,
		be corrupted.		replace EOC.
	F14	Misconnected flat cables. No	1. Disconnect power. Verify the flat cable connection between the touch panel or membrane and the EOC on P12
		communication between oven and		and P13.
		controls.	2. If the problem persist, replace the EOC.
	F15	Control self-check failed	Replace the EOC display board
	F30	Open RTD sensor probe/ wiring	1. Check wiring in probe circuit for possible open or short condition.
		problem. Note: EOC may initially	2. Check RTD resistance at room temperature (compare to probe resistance chart). If resistance does not match
		display an “F10,” thinking a run-		the chart, replace the RTD sensor probe.
		away condition exists.	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.
	F43	The cooling fan speed, as read by the	Determine first if the problem appears to be caused by a cooling fan not turning or turning slowly or by a problem with
		tachometer input of the EOC-display	the sensing of the fan speed. Start a Bake and check during the first 15 seconds if the fan is turning (should feel air
		board, is abnormally too slow.	flowing 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 EOCdisplay 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	Inspect the cooling fan. Does it appear to be turning normally (air flow, noise)? Verify the fan blade is well assembled.
		by the tachometer input of the
			Verify there is nothing blocking the air flow of the fan (that could make the fan turn faster).
		EOC-display board, is abnormally
			Check the 120VAC voltage on the fan. A voltage higher than 120VAC + 10% could make it go too fast.
		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 first
			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 EOCDisplay Board.
			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
	F90			rotate, replace Lock Motor Assembly.
	to	Door motor mechanism failure.	4. Check Lock Switch for proper operation (do the contacts open and close, check with ohmmeter). The Lock
	F94			Motor may be powered as in above step to open and close Lock Switch. If the Lock Switch is defective, replace
				Motor Lock Assembly.
			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.

General Troubleshooting Schematic

TEMP PROBE

TEMP PROBE

(LOWER OVEN) (UPPER OVEN)

MEAT PROBE

LATCH

TEMP

TEMP

(UPPER OVEN)

DOOR

MTR

DOOR

LATCH

PROBE

PROBE

MEAT PROBE

SWITCH

SWITCH

MTR

(LOWER

(UPPER

(UPPER OVEN)

COMMON

COMMON

OVEN)

OVEN)

J3

J4

1

1

NEUTRAL

L1

COOLING FAN

NEUTRAL

L1

CONV FAN

CONV FAN

OVEN LAMP

LATCH MOTOR/MDL

LATCH MOTOR/MDL

OVEN LAMP

COOLING FAN - LOW SPEED

COOLING FAN - HIGH SPEED

UPPER OVEN CIRCUIT ANALYSIS MATRIX

On Relay Board

On Display Board

ELEMENTS

Oven Light

Door Motor

DLB L2 out

Cooling Fan

Door Switch

Bake P9

Broil P7

J3-6

J3-5

P1

J3-7

P8-3 / P8-5

Bake

X

X

X

X

Broil

X

X

X

Clean

X

X

X

X

Locking / Unlocking

X

Light

X

Door Open

X

Door Closed

X

LOWER OVEN CIRCUIT ANALYSIS MATRIX

On Relay Board

On Display Board

ELEMENTS

Oven Light

Door Motor

DLB L2 out

Cooling Fan

Door Switch

Bake P10

Broil P8

J4-7

J4-6

P2

J3-7

P10-3 / P10-6

Bake

X

X

X

X

Broil

X

X

X

Clean

X

X

X

X

Locking / Unlocking

X

Light

X

Door Open

X

Door Closed

X

Relay will operate in this condition only