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Fault & Error Codes

Click on the brand name below to get assistance with your fault and error codes:

Thermador
Bosch


Thermador – CT and CMT Ovens with Dreef Control Error Codes
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

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BOSCH – Error Cause Corrective Action
Error Code: F32
Cause: Lower oven temperature sensor failure; An open or short circuit in the lower oven sensor wiring
Corrective Action:
1. Check all connections, especially P24 on the power
board.
2. Unplug the sensor connector and check sensor resistance (approximately 1080 ohms at room temperature with connector remove). Remember to reconnect it.
3. Check that neither sensor wire is open or pinched to the appliance chassis.
4. Check that the solder joints in header P24 on the power board are not broken.
5. If sensor is OK, replace power board.

Error Code: F41
Cause: Upper (or single) oven motorized latch will not lock; defective or jammed upper (or single) oven door or latch switches; Defective latch motor or its wiring.
Corrective Action:
1. Check P24 connector on the power board.
2. Ensure door latch switches are operating properly.
3. Check that neither latch switch nor common wires are
pinched to the appliance chassis.
4. Check that the solder joints in header P24 on the power board are not broken.
5. Check P10 connector and check if latch motor wire is
pinched to the appliance chassis.

Error Code: F42
Cause: Lower motorized latch will not lock; Defective or jammed lower oven door or latch switches; Defective latch motor or its wiring.
Corrective Action:
1. Check P24 connector on the power board.
2. Ensure door latch switches are operating properly.
3. Check that neither latch switch nor common wires are
pinched to the appliance chassis.
4. Check P10 connector and check if latch motor wire pinched to the appliance chassis.
5.

If F42 persists, replace power board.


Error Code: F43
Cause: Upper (or single) oven motorized latch will not unlock; Defective or jammed upper oven door or latch switches; Defective latch motor or its wiring.
Corrective Action:
1. Check P24 connector on the power board.
2. Ensure door latch switches are operating properly.
3. Check that neither latch switch nor common wires are
pinched to the appliance chassis.
4. Check P10 connector and check if latch motor wire is pinched to the appliance chassis.
5.

If F43 persists, replace power board

Error Code: F44
Cause: Lower motorized latch will not unlock; Defective or jammed lower oven door or latch switches; Defective latch motor or its wiring.
Corrective Action:
1. Check P24 connector on the power board.
2. Ensure door latch switches are operating properly.
3. Check that neither latch switch nor common wires are pinched to the appliance chassis.
4. Check P10 connector and check if latch motor wire is pinched to the appliance chassis.

Error Code: F45
Cause: Upper (or single) oven latch both locked and unlocked; Defective or jammed upper oven door or latch switches.
Corrective Action:
1. Check P4 connector on the power board.
2. Ensure door latch switches are operating properly.
3. Check that neither latch switch nor common wires are pinched to the appliance chassis.
4. If F45 persists, replace power board.
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