Error code reference
Frigidaire Range Error Code E21
Loss of communication between UIB and pan sensing PCB.
Loss of communication between UIB and pan sensing PCB.
First step from the service manual
1
1. Verify harness. 2. Replace pan sensing PCB. 3. Replace UIB.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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E21 on my Frigidaire FCRE3052AS
M+
Loss of communication between UIB and pan
From Service Manual 972425, p.37:
1.1. Verify harness. 2. Replace pan sensing PCB. 3. Replace UIB.
2.Inspect the communication harness between the main control and the UI board for bent pins or unseated connectors at each end.
3.Measure supply voltage to the UI board. Expected: 5 VDC at the interface connector; a low or missing rail points back to the main control supply.
Part 5304504863
Display board
Related Frigidaire range codes
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- -SE-Shorted key
- 1RTD Sensor Error
- 1c1cShorted key detected
- 1c2cKeyboard tail disconnected
- 1c31Cancel key circuit problem
- 1c6cEEPROM error
- 1c7cControl not calibrated
View all 186 Frigidaire range codes
- 1c8cCooking program error
- 1d11Runaway temperature (650°F) with door unlocked
- 1d21Runaway temperature (950°F) with door locked
- 3d11Oven temperature sensor open
- 3d21Oven temperature sensor shorted
- 4d11Door switch not closed when door is locked.
- 4d51Door switch not open or closed
- 8Cooling Fan Error
- 9d11Latch will not lock
- CFCheck Food
- CLEAn dELAyDisplayed when attempting to start consecutive self-clean…
- CLnSelf-clean cycle is active
- CLODoor open during clean cycle
- d-0Steam clean door open indicator
- dODoor open alarm during broil
- doorControl thinks the lock switch is open when the oven is…
- door LocDoor lock indicator
- door OPnDoor open indicator
- ESurface control error indicator displayed (flashing E) at…
- E-08Oven heating error
- E-0AOven heating over
- E-0EDoor locking error
- E-27Oven sensor opened (resistance over 2950 ohms).
- E-28Oven sensor shorted (resistance under 930-940 ohms).
- E011Shorted keypad detected on ESEC surface element control.
- E013Bad EEPROM on the ESEC User Interface Board.
- E014Loss of Display tail #0 or #1, or Loss of Keyboard Tail…
- E015ESEC self test failed; ESEC-UIB may not be receiving a…
- E11Shorted keypad on ESEC surface element control.
- E13Bad EEPROM on ESEC UIB.
- E14TST/Display tail missing
- E15ESEC self test failed.
- E20Loss of LIN communication between ESEC UIB and EOC.
- E41Hall effect sensor error (cooling fan failure).
- E60Ambient oven temperature error for ESEC 20 UIB.
- E61Ambient oven temperature error for the pan sensing PCB.
- EndThe programmed cooking time or timer countdown has finished…
- ErError indicator displayed (flashing 'Er') at power up or…
- FElectronic surface control error displayed at startup or…
- F0 15ESEC Self-test failure.
- F001Touch failure on the oven user interface board.
- F002Touch failure on the oven user interface board.
- F003The oven user interface board is incorrectly configured.
- F004Touch failure on the oven user interface board.
- F005Touch failure on the oven user interface board.
- F01Touch Panel Failure
- F010Oven temperature runaway
- F011Stuck key
- F012Keyboard configuration alarm
- F013Data written to non-volatile memory has failed verification.
- F017The oven user interface board is unable to configure the…
- F018Oven relay board failure (wiggler).
- F019The oven user interface board is unable to configure the…
- F02Touch Panel Failure
- F020Communication failure between the oven user interface board…
- F022Communication failure between the oven user interface board…
- F023Communication failure between the oven user interface…
- F025The communication between the oven user interface and the…
- F027The communication between the oven user interface and the…
- F028The communication between the oven user interface…
- F029The communication between the oven user interface…
- F03The oven user interface board is incorrectly configured.
- F030Open oven temperature sensor (RTD).
- F031Shorted oven temperature probe (RTD).
- F033Meat probe temperature sensor shorted or too hot (triggered…
- F04Touch Panel Failure
- F05Touch Panel Failure
- F050A/D Out of Range
- F090MDL mechanism failure
- F095MDL mechanism failure
- F096The oven door has been detected open during a self-clean…
- F097MDL invalid state
- F098Magnetron case sensor probe shorted (NTC sensor on the…
- F099Magnetron case sensor probe open (NTC sensor on the…
- F1Potential runaway oven condition
- F10Example error code displayed when the electronic control…
- F100Magnetron case sensor temperature over-temp limit
- F101Magnetron auto power limit active based on temperature…
- F102Magnetron auto power limit active based on runtime limit…
- F104Loss of communication between GPU and OUI.
- F105Wake up procedure failure between OUI and GPU
- F106GPU configuration error
- F107Loss of communication between OUI and NIU
- F108NIU provisioning failed (Connection Fail)
- F109OTA (over-the-air) update failed
- F11Electronic control has detected a fault condition (example…
- F110NIU serialization failed (manufacturing only, not at user…
- F111Touch screen error from GPU
- F12Keyboard configuration alarm
- F13Data Written to Non-Volatile Memory has Failed Verification
- F14Misconnected keyboard cable between the keyboard membrane…
- F15Internal control or power supply failure between Power…
- F16The Oven User Interface Board Cannot Read the…
- F17The Oven User Interface Board is Unable to Configure the…
- F18Oven Relay Board Failure
- F19The Oven User Interface Board is Unable to Configure the…
- F2Control has detected a problem with the communications link…
- F20Control has detected a problem with the communications link…
- F22Communication Failure between the Oven User Interface Board…
- F23Control has detected a problem with the communication link…
- F24Communication failure between VSC board and EOC (lower oven…
- F25The Communication between the Oven User Interface and the…
- F26Communication failure with Mini Oven Control Board (for…
- F27The Communication between the Oven User Interface and the…
- F28The Communication between the Oven User Interface and the…
- F29The Communication between the Oven User Interface and the…
- F3Open RTD sensor probe/wiring problem (F30) or shorted RTD…
- F30Open RTD sensor probe or wiring problem (open condition in…
- F31Shorted RTD sensor probe or wiring problem
- F33Meat probe temperature sensor shorted or too hot (triggered…
- F40Cooktop lockout failure (some models).
- F42EOC internal software configuration error.
- F45Cooling fan speed low in upper cavity (Microcombi will…
- F46Cooling fan speed high in upper cavity (Microcombi will…
- F47Cooling fan speed low in lower cavity.
- F48Cooling fan speed high in lower cavity.
- F5ESEC has detected an internal circuit failure in the…
- F5 01ESEC Power Board not communicating.
- F5 02UIB not communicating.
- F5 A0Bad EEPROM checksum on ESEC Power Board.
- F5 F0Watchdog timer timed out on Power Board.
- F5 FFWatchdog timer timed out on UIB.
- F50A/D Out of Range
- F500Loss of LIN Buss communication between EOC and ESEC.
- F60Electronic Oven Control (EOC) over temperature
- F62Improper or corrupt signal voltage between the EOC and…
- F63Display communication error.
- F64Time base failure
- F65Keyboard short circuit or internal EOC failure.
- F66EOC internal power supply failure.
- F68High voltage condition
- F69High voltage condition
- F7ESEC has detected an internal circuit failure in the…
- F7 00Missing connection between Potentiometer/Display Board and…
- F7 01Missing connection between Potentiometer/Display Board and…
- F7 10Missing connection between Potentiometer/Display Board and…
- F7 11Potentiometer LF (Left Front) is shorted.
- F7 12Potentiometer for LF (Left Front) is wrong value.
- F7 20Potentiometer LR (Left Rear) is open.
- F7 21Potentiometer LR (Left Rear) is shorted.
- F7 22Potentiometer for LR (Left Rear) is wrong value.
- F7 30Potentiometer RR (Right Rear) is open.
- F7 31Potentiometer RR (Right Rear) is shorted.
- F7 32Potentiometer for RR (Right Rear) is wrong value.
- F7 40Potentiometer RF (Right Front) is open.
- F7 41Potentiometer RF (Right Front) is shorted.
- F7 42Potentiometer for RF (Right Front) is wrong value.
- F702Shorted Keypad on the ESEC.
- F9Latch motor problem
- F90Motor Door Lock Mechanism Failure
- F91Door motor mechanism failure (F90 to F94 range).
- F92Door motor mechanism failure (F90 to F94 range).
- F93Door motor mechanism failure (F90 to F94 range).
- F94Door motor mechanism failure (end of range F90–F94).
- F95Motor Door Lock mechanism failure
- F96The Oven Door has been Detected Open during a Self Clean…
- F97MDL invalid state
- HEHot Element indicator displayed on ESEC surface element…
- HLdHold/Keep warm
- HotThe oven is still too hot to open the door safely…
- LEDs 3+7Problem with the communication link between the oven…
- LEDs 4+5Oven control not properly calibrated at the factory.
- LEDs 4+5+6Door motor mechanism failure.
- LEDs 4+6Control has sensed a potential runaway oven condition…
- LEDs 4+7Open RTD sensor probe / wiring problem.
- LEDs 5+7Incorrect Micro ID, controller self check failed.
- LEDs 6+7Incorrect EEPROM Checksum, control internal checksum may…
- LinE ERREOC internal voltage test error or failure.
- LocOven lockout feature is active; displayed when any control…
- LOC ONLock Controls feature is activated, preventing cooker…
- LOCK DOORThe self-clean cycle has been selected but the oven door is…
- PErrThe probe connector was not fully inserted into the jack…
- PFPower failure has occurred; the timer in the display will…
- Prob ERRThe oven probe is not detected or is defective
- Prob Too HotThe probe sensor temperature has exceeded 121°C (250°F); if…
- SAbSabbath mode is active
- SCCSelf-clean cycle interrupted because the cooktop was used…
- SFSabbath Failure
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