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Error code reference

Thermador Range Error Code Er:11

WFR 2460 washer

Thermador codesThermador range codes

WFR 2460 washer: Reversing relay test not passed.

First step from the service manual

Start T/P 4 motor test programme.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What Er:11 means on a Thermador range

Er:11 on a Thermador range equipped with the WFR 2460 washer system indicates that the reversing relay has failed its diagnostic self-test. The reversing relay is responsible for switching the direction of the motor between clockwise and counterclockwise rotation, a function critical to the wash and spin cycles. When the control board runs its internal checks and cannot confirm that the relay is switching correctly, it flags this error and halts operation to prevent motor damage or incomplete cycle execution.

The reversing relay test is part of the motor control circuitry. During normal operation, the control board sends a signal to the relay, which then routes power to the motor windings in the correct phase sequence to achieve forward or reverse rotation. If the relay contacts are burned, stuck open, or stuck closed, the motor cannot change direction on command, and the test fails. A failed relay coil, a broken solder joint on the control board, or a wiring harness fault between the board and relay can all produce this condition.

The recommended first diagnostic step is to initiate Test Programme 4 (T/P 4), which runs the motor through a controlled sequence to isolate whether the fault originates in the relay itself, the motor windings, or the connecting wiring. This test helps distinguish a relay component failure from a broader motor or wiring issue, guiding the technician toward the correct repair path.

Source: manufacturer service documentation.

Common causes of Er:11

  1. 01

    Failed reversing relay

    Part replacement

    The relay contacts may be burned, pitted, or welded shut, preventing the relay from switching motor direction. Inspect the relay for visible scorching and test coil continuity and contact switching with a multimeter.

  2. 02

    Faulty relay driver circuit on control board

    Part replacement

    The control board contains the transistor or driver circuitry that energizes the relay coil. If this driver has failed, the relay will never receive a proper activation signal, causing the test to fail even if the relay itself is good.

  3. 03

    Wiring harness fault between control board and relay

    Wiring / connection

    A broken wire, corroded connector pin, or loose terminal in the harness connecting the control board to the reversing relay can interrupt the signal or power feed. Inspect connectors for corrosion and perform continuity checks on each wire in the circuit.

  4. 04

    Motor winding problem

    Part replacement

    If the motor windings used for reverse rotation are open or shorted, the relay may switch correctly but the motor will not respond, causing the T/P 4 test to indicate an apparent relay failure. Check motor winding resistance values to rule this out.

  5. 05

    Poor solder joint on relay terminals

    Wiring / connection

    A cold or cracked solder joint at the relay mounting point on the control board can create an intermittent or complete open circuit. Visual inspection under magnification and reflow or replacement of the affected joint may resolve the error.

See the test procedure for each cause

Frequently asked questions about Er:11

What does Er:11 mean on a Thermador range?
Er:11 indicates that the WFR 2460 washer system's reversing relay did not pass its diagnostic self-test. The reversing relay controls the direction of the motor, and the control board detected that it is not switching correctly. The appliance stops operation to prevent motor damage. A technician should run Test Programme 4 to pinpoint the faulty component.
Can I fix Er:11 on my Thermador range myself?
Some causes, such as a loose connector or corroded harness terminal, can be addressed by a knowledgeable DIYer with basic electrical tools. However, replacing a relay or control board requires comfort working with appliance electronics and an accurate diagnosis from the T/P 4 motor test. If you are not experienced with appliance repair, professional service is recommended to avoid further damage.
Is it safe to keep using the appliance when Er:11 is displayed?
No. The error code indicates the motor direction control has failed its test, and continued operation could cause motor damage or unpredictable cycle behavior. The appliance should remain out of service until the reversing relay circuit has been inspected and repaired.
How much does it cost to repair Er:11 on a Thermador range?
Repair costs depend on the failed component. A wiring harness repair or relay replacement is generally less expensive, typically in the range of $100 to $250 including labor. A full control board replacement can run $300 to $600 or more depending on parts availability and labor rates in your area.
Will resetting the appliance clear the Er:11 code?
A power reset may temporarily clear the code from the display, but if the underlying relay circuit fault remains, the error will return when the control board runs its diagnostic check again. A reset alone is not a fix. The reversing relay, wiring, and control board driver circuit need to be tested and any faulty components replaced before the error will stay cleared.

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