Thermador Fault Codes

Fault Code

Condition/Description

Resolution

E1

Disables clean mode in both ovens, allows cook and microwave.

  • Turn the clock selector knob to OFF

  • Adjust the oven control by turning the clock selector knob slightly to the left (counter clockwise). This may stop the flashing message/beeping and clear the display window.

Repair the electronic range control (also called clock or ERC)

E2

Turns all heat and micro off. Clears when oven temp drops below runaway temp and selector is off.

Cook or clean mode runaway

E3

Turns heat off on failed oven only, micro not affected. Can be cancelled by tweaking if a good oven temperature sensor is detected.

Open oven temperature sensor (over 5000 ohms)

E4

Turns heat off on failed oven only, micro not affected. Can be cancelled by tweaking if a good oven temperature sensor is detected.

Shorted oven temperature sensor (under 500 ohms)

E5

Turns all heat and micro off. Error will remain in display until repaired and powered up. No error tones.

Control board too cold or too hot, repair the electronic range control (also called clock or ERC)

E6

Disables clean mode in both ovens, allows cook and microwave. Can be tweaked away for retry. User must unlatch and delete the “—” to try to re-latch the door.

Repair the electronic range control (also called clock or ERC)

E7

Turns heat off on failed oven only, micro not affected. Cleared with a mode change.

Illegal temp display turn off and retry

E8

Turns heat off on failed oven only, micro not affected. Error will remain in display until repaired and powered up. No error tones.

Repair the electronic range control (also called clock or ERC)

E9

Turns heat off on failed oven only, micro not affected.

  • Turn the clock selector knob to OFF

  • Adjust the oven control by turning the clock selector knob slightly to the left (counter clockwise). This may stop the flashing message/beeping and clear the display window.

Latch switch problems

E10

Turns all heat off, micro not affected. Error will remain in display until repaired and powered up. No error tones.

Repair the electronic range control (also called clock or ERC)

E11

Turns heat off on failed oven only, micro not affected. Tweaking clears to “—” for retry.

CT oven; latch switch problem

E12

Turns heat off on failed oven only, micro not affected.

  • Turn the clock selector knob to OFF

  • Adjust the oven control by turning the clock selector knob slightly to the left (counter clockwise). This may stop the flashing message/beeping and clear the display window.

CT oven; latch switch problem

E13

Turns heat off on failed oven only, micro not affected. Disables clean mode in both ovens, allows cook and microwave.

CT ovens; latch froze or no power to latch motor
CMT ovens; control board not converted

E14

Turns heat off on failed oven only, micro not affected.

  • Turn the clock selector knob to OFF

  • Adjust the oven control by turning the clock selector knob slightly to the left (counter clockwise). This may stop the flashing message/beeping and clear the display window.

Latch switch problems

E15

Turns all heat off, micro not affected. Error will remain in display until repaired and powered up. No error tones.

Repair the electronic range control (also called clock or ERC)

F0

Internal logic failure; cancel key supervision. Sounds alarm and resets to non-cook mode

Repair the electronic range control (also called clock or ERC)

F1

Internal logic failure (monitoring function). Sounds alarm and inhibits cook modes

Repair the electronic range control (also called clock or ERC)

F2

Temperature runaway detected (Bake/Broil: 600 – 700 F; Clean: 930 – 1000 degrees F). Sounds alarm and resets to non-cook mode. Check relay board for stuck contacts. Check oven temperature sensor for normal room temperature resistance (1085-1097 ohms at 75 degrees F). Check sensor wiring connectors for a loose or high resistance connection. Check electronic range control (also called clock or ERC) functions

Replace relay board if necessary. Replace oven temperature sensor if other components check normal. If failure repeats, repair electronic range control (also called clock or ERC)

F3

Open circuit detected; oven temperature sensor. Check sensor for normal room temperature resistance (1085-1097 ohms at 75 degrees F). Check wires and connections between electronic range control (also called clock or ERC) and oven temperature sensor

Replace sensor if other components check normal. Repair electronic range control (also called clock or ERC) if fail code reoccurs

F4

Short circuit detected; oven temperature sensor. Check sensor for normal room temperature resistance (1085-1097 ohms at 75 degrees F). Check wires between electronic range control (also called clock or ERC) and sensor.

Replace sensor if other components check normal. Repair electronic range control (also called clock or ERC) if fail code reoccurs

F7

Function key shorted for over 16 seconds. Check for something pressing a key or preventing normal release of the key

Repair electronic range control (also called clock or ERC) if other components check normal

F8

Internal logic failure; calibration. Alarm sounds and resets to non-cook mode. Check oven temperature sensor for normal room temperature resistance (1085-1097 ohms at 75 F). Check wires and connections between electronic range control (also called clock or ERC) and oven temperature sensor

Repair electronic range control (also called clock or ERC) and oven temperature sensor if other components check normal

F9

Internal logic failure; door latch supervision. Alarm sounds and resets to non-cook mode. If door is locked due to clean temperatures, disconnect power until door can be unlocked

Repair the electronic range control (also called clock or ERC)

Fd

Bake & Broil relay drives active simultaneously. Check relay board for damage: trace E6 to K2 & K3, and burned contacts K3 & K4

Repair electronic range control (also called clock or ERC). Replace relay board if necessary

Blank display

No power to electronic range control (also called clock or ERC). Check oven light and cooktop dial lights (powered by L2 & L1, respectively). Check relay board transformer primary, E1 to E2 (140 ohms typical). If the transformer internal fuse is still OK, check output voltages, pins 9 – 8 (3.2 V.A.C.) and 7 – 6 (21 V.A.C.). Check clock functions after replacing relay board

If relay board transformer open (E1 to E2), replace relay board. If still no clock functions repair electronic range control (also called clock or ERC)

CT and CMT OVENS

Error Code

Notes

Repair

E1

C

E

Control board problem

E2

K

G

Cook or clean mode runaway

E3

A

H

Open oven sensor (over 5000 ohms)

E4

A

H

Shorted sensor (under 500 ohms)

E5

K

D

Control board too cold or too hot, or defective board.

E6

C

J

Control board problem

E7

A

I

Illegal temp. display turn off and retry

E8

A

D

Control board problem

E9

A

E

Latch switch problems

E10

B

D

Control board problem

E11

A

F

CT oven; latch switch problem

E12

A

E

CT oven; latch switch problem

E13

A

C

CT ovens; latch froze or no power to latch motor
CMT ovens; control board not converted

E14

A

E

Latch switch problem

E15

B

D

Control board problem

Notes:

A

Turns heat off on failed oven only, micro not affected

B

Turns all heat off, micro not affected

C

Disables clean mode in both ovens, allows cook and microwave

D

Error will remain in display until repaired and powered up. No error tones

E

Turning to off stops error and flashing can tweak away code

F

Tweaking clears to “—” for retry

G

Clears when oven temp drops below runaway temp and selector is off

H

Can be cancelled by tweaking if a good sensor is detected

I

Cleared with a mode change

J

Can be tweaked away for retry. User must unlatch and delete the “—” to try to re-latch the door

K

Turns all heat and micro off

L

If two switches show locked door, then “E13” and “Lock” are permanent in display (all modes). If two switches show an open door you can tweak away the “E13”

Professional ranges PDR30/36/48, and PGR30/36/48

Fault Code

Condition/Description

Resolution

E1

EEPROM error

Repair Electronic Range Control (ERC)

E2

Control not calibrated

Repair Electronic Range Control (ERC)

E3

Sensor opened

Open oven temperature sensor (over 5000 ohms)

E4

Sensor shorted

Shorted oven temperature sensor (under 500 ohms)

E5

Potentiometer failure

E6

Over temperature – Cooking

Check temperature sensor

E7

Over temperature – Cleaning

E9

No cooling fans

Check fan motor

E11

Door latch fault

Check door latch

E12

Exp. Board not connected

E13

VCC lift off error

E14

Selector switch error

S, SM, and SMW Oven

Fault Code

Condition/Description

Resolution

F1

Element supervisor enabled

Replace main power board

F1, F7

Poor connection between display and touch pad

Replace control head kit and main power board

F2

Oven temperature detected or door light coming on after 1 hour into self-clean

Check that the oven latches and door light are operating properly. Check oven sensor from molex plug on main power board. Should read approximately 1050

F3

Opened oven temperature sensor

Check connection on board, sensor should read approximately 1050 at room temperature

F4

Shorted oven temperature sensor

Check oven wiring, sensor should read approximately 1050

F5

Element supervisor is disabled

Check oven sensor wiring, replace main board

F7

Shorted key

Replace control head kit and keypad

F8

Shorted meat probe

Replace main relay board

F9

Invalid door lock

Check latch and switches for proper operation, replace if needed

FC

Communication error

Replace control head and main power board

FF

Bad analog

Replace temperature sensor and main control

F

Communications error

Check connections and replace main board

FR

Invalid door latch switch

Communications error at display

Element supervisor

Replace lower latch

Check connections, replace main board

Replace lower temperature sensor and replace 2nd power relay board with main board

C, CM, and CJ oven

Fault Code

Condition/Description

Resolution

F10

Power board incompatibility

Replace power relay board

F11

Communication error with board

Replace power relay board

F12

Vcc lift-off ( power relay board )

Replace power relay board

F13

Power Board not calibrated

Check air switch or replace power relay board

F14

Control Display PCB EEPROM error

Replace power relay board

F19

Miscellaneous power relay board error

Replace power relay board

F20

Upper oven cancel key shorted high

Replace power relay board, and touch panel

F21

Lower oven cancel key shorted high

Replace power relay board, and touch panel

F22

Upper oven cancel key shorted low

Replace power relay board, and touch panel

F23

Lower oven cancel key shorted low

Replace power relay board, and touch panel

F24

Touch input key stuck

Replace power relay board, and touch panel

F25

Multiple touch input keys stuck

Replace power relay board, and touch panel

F30

Upper oven sensor shorted

Check sensor should read 1080 ohms at room temperature, if ok replace power relay board

F31

Upper oven sensor open

Check sensor should read 1080 ohms at room temperature, if ok replace power relay board

F32

Upper oven over temperature while cleaning

Check sensor should read 1080 ohms at room temperature, if ok replace power relay board

F33

Upper oven over temperature while cooking

Check sensor should read 1080 ohms at room temperature, if ok replace power relay board

F34

Upper oven cooling fan air switch not detected

Replace air switch, cooling fan, and check header P6 on PCB

F40

Upper meat probe shorted

Check P2 on PCB. Check meat probe wire if pinched. Replace PCB

F50

Upper door signal shorted low

Check P9 header on power relay board and P11 on PCB and power relay board. Check if door switch wire pinched in chassis. Replace power relay board and PCB

F51

Upper door stuck unlocked

Check header P9 on the power / relay board. Check if door latch switch wire pinched in chassis. Replace power relay board

F52

Upper oven door position error

Check P9 and P0 on the power relay board and P11 on relay board and PCB. Check if door switch wire pinched in chassis. Replace power relay board

F53

Upper door stuck locked

Check P9 header on power relay board. Check door latch switches and if wire is pinched in chassis. Replace power relay board

F54

Upper latch input shorted

Check P9 header on power relay board. Check door latch switches and if wire is pinched in chassis. Replace power relay board

F60

Lower oven sensor shorted

Check P2 on power relay board. Check lower oven sensor should read 1080 ohms at room temperature, if ok replace power relay board

F61

Lower oven sensor open, oven sensor wiring

Check sensor should read 1080 ohms at room temperature, if ok replace power relay board. Also check P2 on power relay board for solder break

F62

Lower oven over temperature while cleaning

Check sensor should read 1080 ohms at room temperature, if ok replace power relay board. Also check P2 on power relay board for solder break

F63

Wrong oven temp while cooking

Check sensor should read 1080 ohms at room temperature, if ok replace power relay board. Also check P2 on power relay board for solder break

F64

Lower oven cooling fan air switch not detected

Replace air switch, replace cooling fan, check connections, check P6 on PCB control display

F70

Lower meat probe shorted

Check header P2 on PCB. Check for meat probe wiring pinch. Replace Control PCB

F80

Lower door signal shorted low

Check header P5 on the power relay board and P11 on power relay board and PCB. Check door switch wiring and door switch. Replace control display PCB

F81

Lower door stuck unlocked

Check header P5 on the power relay board. Check wiring on latch switch. Replace power relay board

F82

Lower oven door position error (locked or open)

Check headers P5 and P0 on the power relay board and P11 on both relay board and PCB. Check wiring on door latch switch. Replace power relay board

F83

Lower door stuck position

Check headers P5 on the power relay board. Check wiring on door latch switch. Replace power relay board

F84

Lower latch input shorted

Check headers P5 on the power relay board. Check wiring on door latch switch. Replace power relay board