F1 Error Code in Whirlpool RB160, RB260, RB270, RB770, RF396, RM765, RM770, RS675, RS696 Series Ovens and Thermador RDDS30, RDF30, RDFS30, RDSS30, RED30, REF30, RES30, RSS30 Series Ovens

This article refers to a specific problem we’ve been encountering with two different types of oven control boards – the relevant model and part numbers can be found at the end of the article.

These control boards can throw F1 error codes in response to a variety of failures.  Often, these error codes are the result of bad power supply or logic control circuits that can be repaired at FixYourBoard.com.  However, we have been finding that even after a control board is rebuilt and passes a full function test, it still throws F1 when reinstalled in the original oven.  How can this be?

Electronic Control Board Rebuilds

Electronic Control Board Rebuilds

It turns out that these control boards connect to the platinum temperature sensing rods through wire nuts.  The connection in the wire nut is going high resistance, which causes the control board to think the oven cavity is over temperature…resulting in an F1 overheat error code.  This connection seems especially susceptible to temperature change as well, so this problem is especially apparent as you start heating the oven.

So, if you’ve had your board rebuilt by FixYourBoard.com or recently got the board replaced, and you’ve replaced the temperature sensor, but you’re still getting an F1, inspect these wire nuts!  The easiest way to find the wire nuts will be to follow the wiring with your hand (make sure the breaker is off) from the temperature sensor (or from the board if you know which wires go to the sensor).

You will likely find that the wiring inside the nut has rusted/corroded.  We recommend you cut off the already exposed portions of the wire and strip some insulation off, allowing “fresh” wire to be reconnected in a new wire nut.

Remember to have all your control board needs handled at FixYourBoard.com!

 

Part Numbers: 14-33-347, 3169256, 3169257, 3169258, 3169259, 486752

Model Numbers: RB160PXB02, RB160PXBB2, RB160PXYB6, RB170PXB02, RB170PXBB, RB170PXBQ2, RB260PBYQ, RB260PXB1, RB260PXBB1, RB260PXBB2, RB260PXBQ, RB260PXBQ1, RB260PXBQ2, RB260PXYB, RB260PXYB0, RB260PXYB1, RB260PXYQ, RB260PXYQ0, RB270PXBB0, RB270PXBB1, RB270PXBO1, RB270PXBQ2, RB270PXY, RB270PXYB, RB270PXYB RB270PXYB-0, RB270PXYB1, RB270PXYQ, RB270PXYQ0, RB270RXBB1, RB760POXYB2, RB760PXB, RB760PXB01, RB760PXBB0, RB760PXBB2, RB760PXBQ, RB760PXYQ, RB770PXBB1, RB770PXBQ1, RB770PXBQ2, RB770PXYB, RB770PXYB5, RDDS30, RDDS30QVB, RDDS30RS, RDDS30RVS, RDDS30V, RDDS30VPS, RDDS30VQ, RDDS30VQB, RDDS30VQS, RDDS30VQW, RDDS30VRS, RDDS30VRS/01, RDDS30VRS/02FD, RDDS30VRS/03SD, RDDS30VRS03, RDDS30VRSFD, RDDS30ZQB, RDF30, RDF30Q, RDF30QB, RDF30QS, RDF30QW, RDF30QW RDF30RS, RDF30RS, RDFS30, RDFS30QS, RDFS30QW, RDFS30RS, RDS30V, RDS530RS, RDSF30RS, RDSS30, RDSS304S, RDSS30Q, RDSS30QB, RDSS30QW, RDSS30QW RDSS30RS, RDSS30RS, RDSS30RS-02, RED30RS01, RED30V, RED30VQB RED30VQBK, RED30VQW, RED30VRS, REF30, REF30QS, REF30RS, RES30QW, RES30RS, RF396PXYN, RF768PXYQ, RFB260PXBQ2, RH770PXBQ2, RM765PXAB0, RM765PXBB2, RM770PXBB1, RM770PXBB2, RM770PXBQ2, RS6755XYN1, RS6755XYW0, RS675PXBQ1, RS675PXBQ2, RS675PXYQ0, RS677PXYQ, RS696B02, RS696PXBB2, RS696PXYB, RS696PXYB0, RS696PXYB2, RS696TXYQ02, RS69PXBB3, RSS30RS, RX260PXYQ01, W305B, WPLRM770PXAB0

Home Diagnostics for Your RDD, RDS, RDF, RED, REF, RES Thermador Oven Range Cooktop Stove

Is your Thermador oven throwing error codes, not heating to set temp., or malfunctioning in other ways?

You may need to have your control board repaired, but the problem could also be failing hardware in your oven.

Luckily, these boards have a built-in diagnostic feature that can tell you where the problem is.  To enter the diagnostic mode, you need to have the breaker to your oven shut off.  Hold down the “Stop Time” button (center button) and have a friend turn the breaker back on.  Until the button is depressed, the control will beep and show the microprocessor ID in blue digits and dashes in red digits.  Once “Stop Time” is depressed, the control will stop beeping and show dashes in both the blue and red digits.

14-33-347,486752

Display shows Microprocessor ID and dashes when you enter Diagnostics Mode.

From here, you can test all the various functions of the oven control.

Holding any of the cooking buttons (Convection, Bake, or Broil) will energize that element relay while the button is held in, and the display will show “ON”.  You should hear a *click* whenever the relay turns on or off.  Depressing the button turns the relay off.

Holding the Clock button will energize the door latch relay and illuminate all display segments.

Holding the Stop Time button will cause the board to beep and show the same screen as when you entered Diagnostics: 4 digit Microprocessor ID and dashes.

Holding the Cook Time Button will show the  EEPROM checksum in blue digits and the current oven sensor temperature in red.

Holding the Timer button will cause the control board to beep.

Holding the Clean button will reveal the current state of the door latch.  Depending on which revision of the control board you have, there are 4 possible conditions, represented by either numbers 0-3 or 4-7…

  • 0 or 4: Latch in transition between states. Unlock Switch 1 and Lock Switch 2 are both open.
  • 1 or 5: Fully Latched (door closed). Unlock Switch 1 is open and Lock Switch 2 is closed.
  • 2 or 6: Fully Unlatched. Unlock Switch 1 is closed and Lock Switch 2 is open.
  • 3 or 7: Invalid Latch State. Unlock Switch 1 and Lock Switch 2 are both closed.

Pressing Cancel/Clear/Off will exit the Diagnostic Mode.

 

 

So, this is a powerful troubleshooting tool.  For example, if your oven isn’t heating properly, use diagnostic mode to figure out which element isn’t heating.  Hold Bake, you should hear the Bake relay click, and the Bake element (bottom) should heat as long as the button is held in.  If you hear the click, but there’s no heat, check the wiring to the element and the element itself (hardware specs below).  If the hardware is good, then the control board needs to be sent in for repair.  Even if the relay clicks, it can still have bad contacts.

Or, perhaps the oven isn’t heating properly because there is a failure in the temperature sensing circuit.  Hold the Cook Time button to reveal the oven sensor temperature.  If the oven has been idling at room temperature, then the red digits should display something around “070” (70 degrees).  Anything drastically different than this means there is a definite problem.  Check the wiring to the oven sensor and the sensor itself.  If the hardware is good, then the control board needs to be sent in for repair.

There are is a variety of possible failures for these ovens.  Using the diagnostics mode can help you find which circuit is faulty, and then you can use the table below to determine whether it’s a hardware problem or control board problem.

 

DANGER HIGH VOLTAGE!  You do not need power to the oven to make these measurements. Please cut the breaker.

HARDWARE TERMINALS RESULT
Bake Element E6** 18-26 Ω
Broil Element E7** 12-20 Ω
Convection Motor E2 to E8 55-80 Ω
Latch Motor E2 to E5 835-870 Ω
Temperature Sensor J1: pins 3 to 5 ~1080 Ω at Room Temp

**NOTE: The motors and sensor checks test the hardware and relevant wiring simultaneously.  There’s no good way to test the heating elements and their wiring at the same time.  Check the resistance of the elements at the ends of the element, and then individually inspect the wires from the ends of the elements.

 

This troubleshooting guide applies to the following Part and Model numbers…

P/N: 14-33-347, 35-00-571, 35-00-751, 486752, 487604

M/N: RDSS30, RDDS30V, RDFS30, RDDS30VQB, RDF30, RDF30QW, RED30V, RDDS30VRS, RDDS30VQB, RDDS30, RDF30RS, RDDS30QW, RES30, REF30QW, RES30QB, RDF30QB, RED30VQRS, REF30QB, RES30RS, RDF30RS, RED30VQB, RED30VQRS, RED30VQW, REF30QB, REF30QW, REF30RS, RES30QB, RES30W

Unscramble Codes E1,E2,E3,E4,E5,E6,E7,E8,E9,E10,E11,E12,E13,E14,E15 For Thermador CT127, CT130, CT230 Models

The most common codes we see at www.fixyourboard.com are E3,E4, E10,  but here is the full list for CT127, CT130, CT230, CMT22 models:

Does your Thermador Controller look like this?  Below is the full list of codes and the meaning according to Thermador:

ERC_CT127_CT130_CT230

ERC For CT127_CT130_CT230

Error Code:     E1
Cause:     Control Board
Example:     Disables clean in both ovens; allow cooking
Corrective Action:     Replace control board

Error Code:     E2
Cause:     Sensor or Control Board
Example:     Oven temp over 625F or clean temp over 890F
Corrective Action:     Check sensor

Error Code:     E3
Cause:     Open Sensor
Example:     Disables cooking in affected oven
Corrective Action:     Check sensor

Error Code:     E4
Cause:     Shorted sensor
Example:     Disables cooking in affected oven
Corrective Action:     Check sensor

Error Code:     E5
Cause:     Control Board
Example:     Disables clean in both ovens; cooking useable
Corrective Action:     Replace control board

Error Code:     E6
Cause:     Selector Switch
Example:     Disables individual cook modes in affected oven
Corrective Action:     Check all functions; replace selector switch if one-piece Dreefs; replace control board

Error Code:     E7
Cause:     Control Board
Example:     Remains in display; oven unusable
Corrective Action:     Replace control board

Error Code:     E8
Cause:     Control Board
Example:     Remains in display; oven unusable
Corrective Action:     Replace control board

Error Code:     E9
Cause:     Latch
Example:     Latch motor may run but switches do not cycle
Corrective Action:     Replace latch in affected oven

Error Code:     E10
Cause:     Control Board
Example:     Checksum error
Corrective Action:     Replace Dreefs board

Error Code:     E11
Cause:     Latch Problem
Example:     Will not clean
Corrective Action:     Replace latch in affected oven

Error Code:     E12
Cause:     Latch Problem
Example:     Will not clean
Corrective Action:     Replace latch in affected oven

Error Code:     E13
Cause:     Latch Problem
Example:     Latch does not run
Corrective Action:     Check for voltage to latch motor

Error Code:     E14
Cause:     Latch Problem
Example:     Loose latch switch
Corrective Action:     Check latch for proper operation

Error Code:     E15
Cause:     Control Board
Example:     Remains in display; oven unusable
Corrective Action:     Replace Dreefs board

The common parts and models that we see at www.fixyourboard.com are:

Parts: 368743, 369171, 431481, 35-00-536, 35-00-459

Models: CT127N01, CT127NPRS, CT130-03,  CT130S-03, CT227N01 CT23003, CT227NPRS, CT130S-03, CMT22NPRS

F1 Error Code – Thermador Oven Control Board 486752 / 14-33-347

Keep your Dual Fuel Thermador Oven working like new!  These controllers are obsolete, but a rebuild will fix F1 codes on your built-in or free standing Thermador.  At www.FixYourBoard.com, we are starting to see this problem which always means the controller needs to be repaired.  Not to worry, among many other problems, this is repaired during a standard rebuild.

Common F1 code on a 486752 / 14-33-347 electronic controller/ERC/control board.  Also seen on 487604,  and 316080103:

Thermador_Oven_F1_486752_1433347

F1 on Thermador – 486752 14-33-347

Common :00 code on a 486752 / 14-33-347 electronic controller/ERC/control board:

Thermador_Oven_:00_486752_1433347

:00 Code on Thermador Dual Fuel Range

This problem is not limited to, but includes the following models:

RDDS30, RDDS30QW, RDDS30V, RDDS30VQB, RDDS30VQB, RDDS30VRS, RDDS30VRS, RDFS30, RDF30, RDF30QB, RDF30QW, RDF30RS, RDF30RS, RDSS30, RED30V, RED30VQB, RED30VQRS, RED30VQW, REF30, REF30QB, REF30QW, REF30RS, RES30, RES30QB, RES30RS, RES30W, RDDS30, RDDS30QW, RDDS30, RDDS30V, RDDS30VQB, RDDS30VRS, RDFS30, RDF30, RDF30QB, RDF30QW, RDF30RS, RDSS30, RED30V, RED30VQB, RED30VQRS, RED30VQW, REF30, REF30QB, REF30QW, REF30RS,  RES30,  RES30QB,  RES30RS,  RES30W.

Thermador Built-In Oven – Takes Too Long to Heat, Can’t Control Temperature, No Heat

Does your Thermador oven have temperature control problems caused by the control board?  The following post describes the behavior of a properly working control board in pre-heat.  This applies to the following model series: SCD27,  SCD30,  SCE30,  SCE70,  SC272,  SC301,  SC302,  SMWS7,  SMW27,  SM272,  SVD48,  S272T,  S301T and  S302T.  At www.FixYourBoard.com, we hear about problems such as the oven taking too long to heat, temperature fluctuations in the oven, oven is burning food or there is no heat at all.

First, the picture below shows the relevant connections  that should be measured to ensure that the elements are correctly turned on by the relays.  This picture is an example of part 492067 which is the power / relay board.  Its purpose is to provide power to the oven, turn on heating elements and fans, and communicate with the display board.

thermador_relay_power_board controller

Relay Board and Noted Measurement Points

These ovens can be tricky to troubleshoot, but start with the following table which shows how the timer is controlling the heating elements and cooling fans.  Note that an AC voltmeter must be used to perform the following checks

Thermador Pre-Heat Cycling

Pre-Heat ModeBake to L2 Broil 1 to L2Broil 2 to L2DLB relayCooling Fan Relay
Bake ModeOn 50 sec = 0VAC
Off 10 sec = 240VAC
Off 50 sec = 240VAC
On 5 sec = 0VAC
Always off = 240VACAlways on = 0VACAlways on = 0VAC
Convection
Roast
Always off = 240VACOn 30 sec = 0VAC
Off 30 sec = 240VAC
On 30 sec = 0VAC
Off 30 sec = 240VAC
Always on = 0VACAlways on = 0VAC
Convection Bake ModeAlways off = 240VACAlways off = 240VACAlways on = 0VACAlways on = 0VACAlways on = 0VAC
Broil ModeAlways off = 240VACAlways on = 0VACAlways off = 240VACAlways on = 0VACAlways on = 0VAC

Relevant model numbers:  1065923121 , 1065923160 , 1065923161 , 1065923200 , 1066025120 , 1066025150 , 1066025151 , 1066025160 , 1066025201 , SCD272T , SCD302T , SCE30500W , SCE30600B , SCE70600B , SCE70600W , SC272T , SC301T , SC302T , SMWS72YP AFTER S/N 8204 , SMW272B , SMW272P , SMW272S , SMW272W , SMW272YB AFTER S/N 8204 , SMW272YS AFTER S/N 8204 , SMW272YW AFTER S/N 8204 , SMW272ZS AFTER S/N 8204 , SM272B , SM272S , SM272W , SM272YB AFTER S/N 8204 , SM272YS AFTER S/N 8204 , SM272YW AFTER S/N 8204 , SM272ZS AFTER S/N 8204 , SVD48600B , SVD48600PF , SVD48600PG , SVD48600PK , SVD48600PR , SVD48600PT , S272T , S301T , S302T

Relevant part numbers: 35-00-760, 12001691, 492071, 14-38-901, 492069, 492067

Thermador Oven Control Board 486752 / 14-33-347 – Door Lock Sequence and Errors

Are you having door lock problems with your Thermador control board 486752 or 14-33-347,  487604 or 316080103.   At www.FixYourBoard.com, we get questions about the door lock operation for this controller.  This post addresses this by describing the sequence of events when the controller is programmed for a clean cycle.    We hope this information will help you  troubleshoot door lock issues with the following model numbers: RDDS30, RDDS30QW, RDDS30V, RDDS30VQB, RDDS30VQB, RDDS30VRS, RDDS30VRS, RDFS30, RDF30, RDF30QB, RDF30QW, RDF30RS, RDF30RS, RDSS30, RED30V, RED30VQB, RED30VQRS, RED30VQW, REF30, REF30QB, REF30QW, REF30RS, RES30, RES30QB, RES30RS, RES30W, RDDS30, RDDS30QW, RDDS30, RDDS30V, RDDS30VQB, RDDS30VRS, RDFS30, RDF30, RDF30QB, RDF30QW, RDF30RS, RDSS30, RED30V, RED30VQB, RED30VQRS, RED30VQW, REF30, REF30QB, REF30QW, REF30RS,  RES30,  RES30QB,  RES30RS,  RES30W.

State 1 -Clean Button Pressed and Time Set  (Door still unlocked)

Note that the blue display show that clean mode has been selected and the total time for the clean mode.  The state of the switches is shown in the diagram.  Pins 7 and 8 are shorted together with switch #1.  This is the un-locked state.

Thermador_486752_clean_start1

State 1 -Display As Soon as Clean Time is Programmed

State 2 – Automatic Door Locks are Running (One Second after State 1)

After a second in state 1, the following happens:

  1. The clean light comes on.
  2. Controller turns on the door lock motor.
  3. This state only last until motor releases switch 1 and pins 7 and 8 are no longer connected.

 

Thermador_486752_clean_start2

 

State 3 – Lock Motor Still Spinning and Switch #1 is Not Pressed anymore.

Pins 7, 8 and 9 are not connected and the motor is still spinning.

Note that the display shows the “locked” even though switch #2 is not pressed yet and door is not locked.  

 

Thermador_486752_clean_door_all_pins_open

 

State 4 – Lock Motor has Stopped Spinning Because Switch #2 shorted pin 7 to 9.  Oven has turned on the heating elements.

Note that the display now says “ON”.  This means that switch #2 was pressed by the lock motor which shorted pin 7 to 9.  The oven will now reach cleaning temperature.

 

Thermador_486752_clean_on

 

State 5 – Fault State.  If the controller does not sense the door lock on pins 7 and 9.

In this fault mode, the controller will beep and show door on the screen.

Thermador_486752_clean_door_error

Error State – Control did not receive the locked signal on pins 7 and 9.