Frigidaire FEB27T6CSA DATA SHEET

SERVICE DATA SHEET 318047301 (9704) Rev. C

Electric Double Wall Ovens with Electronic Oven Control (Robertshaw 5800 - 318010501)

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.

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 limited 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 CATALOGED FOR THIS APPLIANCE. SUBSTITUTIONS
MAY DEFEAT COMPLIANCE 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.

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ELECTRONIC OVEN CONTROL

* Depending on model, shape of buttons or pads may vary.

RELAY BOARD #1
FOR UPPER OVEN.

RELAY BOARD # 2
FOR LOWER OVEN

TRANSFORMER

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ELECTRONIC OVEN CONTROL FOR DOUBLE WALL OVENS

The electronic oven control includes:

• a display board

• a relay board #1 and transformer for upper oven

• a relay board #2 for lower oven

DISPLAY BOARD UNIT

The display board unit includes 6 connectors (J1 to J6)

J1 connector: This 20 pin connector is connected to the keyboard (touch pads).

J2 connector: This 16 pin connector is connected to J1 in relay board #1 for upper oven. J2

serves to energize the upper oven relays (6 of) and to power the control display.

J3 connector: Unused

J4 connector: This 8 pin connector is connected to the upper oven probe and upper oven motor

limit switch.

J5 connector: This 10 pin connector is connected to J1 in relay board #2 for lower oven. J5 serves

to energize the lower oven relays (5 of).

J6 connector: This 6 pin connector is connected to lower oven probe and lower oven motor limit

switch.

RELAY BOARD #1 FOR UPPER OVEN

This relay board includes 6 relays and a transformer. These relays serve to energize the upper oven
heating elements, convection and door lock motors, and oven lamp. It also powers the display board.
Its 14 pin connector J1 is connected to J2 in the display board.

RELAY BOARD #2 FOR LOWER OVEN

This relay board includes 5 relays. These relays serve to energize the lower oven heating elements,
convection and door lock motors. Its 14 pin connector is connected to J5 in the display board.

OVEN ELEMENT - OPERATION

Baking mode -First rise: Broil element is on 30 seconds per minute.

Bake element is on 60 seconds per minute.

-Normal baking: Broil element is on 7 seconds per minute.
Bake element is on 50 seconds per minute.

Broiling mode Broil element is on for 60 seconds per minute.
Convection mode Bake element is on for 33 seconds per minute.

Broil element is on for 12 seconds per minute.

Clean mode: -First 10 minutes: Broil element is on for 42 seconds per minute

and bake element is off.

-After 10 minutes: Bake element is on for 60 seconds per minute
and broil element is off.

NOTE: SELF CLEANING CYCLE CANNOT BE STARTED IF THE OTHER OVEN IS IN OPERATION, AND

YOU CANNOT OPERATE THE SECOND OVEN IF THE OTHER OVEN IS ON A SELF CLEANING
CYCLE.

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ELECTRONIC OVEN CONTROL (FAULT CODES)

FAILURE MODES

F0 - ALARM (EEPROM OPTION)

This EEPROM selectable option enables the control to recognize a shorted key within approximately
32 seconds. This option has priority over shorted watchdog failure alarm F1.

F1 - ALARM

A failure is detected in the element relay watchdog protection circuits and will activate a "CANCEL"
feature. "F1" will be displayed in the time digits and the alarm will sound until the cancel key for the
oven is pressed or another function is selected.

F2 - ALARM

Occurs when cavity temperature exceeds the clean runaway temp in the clean mode or the cooking
runaway temp in a non-clean condition and will activate a "CANCEL" feature. "F2" will be displayed in
the digits for the affected cavity, and the alarm will sound until the CANCEL key for the oven is pressed
or another function is selected. This failure may be overridden by the F3 or F4 alarm.

F3- ALARM

Occurs when there is a short circuit in the oven temperature sensor for 16 temperature conversions in
a row and will activate a "CANCEL" feature. "F3" will be displayed in the digits for the affected oven
cavity, and the alarm will sound until the CANCEL key for the oven is pressed. The alarm will return in
16 seconds if the failure is still present.

F4 - ALARM

An open circuit in the oven temperature sensor for 16 temperature conversions in a row will activate a
"CANCEL" feature. "F4" will be displayed in the temp digits for the affected cavity, and the alarm will
sound until the CANCEL key for the affected oven is pressed. If the failure is present after cancel is
pressed, the alarm will not be reactivated unless a baking or cleaning function is attempted. The
opposite oven is unaffected with this alarm.

F6 - ALARM

A failure is detected in the EEPROM checksum comparison. This indicates the EEPROM checksum
and the calculated checksum are not the same. Only time of day and timer operation will be allowed in
the control.

F-7 ALARM

A failure detected in the clean lock/phase circuitry for 16 seconds in a row will activate a "CANCEL"
feature. "F7" will be displayed in the temp digits of the affected oven and the alarm will sound until
CANCEL for the affected oven is pressed or another function is selected. This test will be performed
constantly.

F-8 ALARM

Occurs when the door lock runs for 2 minutes without seeing either the lock or phase switch change
positions.

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