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Error code reference

Thermador Range Error Code 24

Fault code indicated by first LED blinking 2 times followed by second LED blinking 4 times.

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What the 24 error code actually means

Your Thermador range is signaling a problem using a blinking light pattern, with one light blinking twice and another blinking four times, which together mean error code 24. This is the range's way of telling you something is not working correctly internally, possibly with the control electronics or a connected component. A technician will need to investigate further to pinpoint the exact cause.

Diagnostic procedure

The full 24 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

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1
Confirm the fault
Power cycle the unit: switch off the breaker for 60 seconds, then restore power. If the code returns, the fault is persistent and the procedure below isolates the cause.
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Most common causes of 24

Ranked by how often they cause this code
  1. 1Control Board Fault
  2. 2Loose or Damaged Wiring Harness Connection
  3. 3Temperature Sensor Failure
  4. 4Secondary Board Communication Error
  5. 5Power Supply Irregularity

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Questions people ask about 24

What does 24 mean on a Thermador range?
Error code 24 on a Thermador range is indicated by the first LED blinking 2 times followed by the second LED blinking 4 times. This blink sequence is the range's built-in fault signaling system used on models without alphanumeric displays. The code points to an internal fault that requires further diagnosis to identify the specific failed component. Common areas to investigate include the control board, wiring harness, and temperature sensors.
Is it safe to use my Thermador range when error code 24 is displayed?
It is not recommended to continue using the range while an active fault code is present, as the underlying issue could affect cooking performance or involve an electrical fault. Until the root cause is identified and resolved, the range may not operate as intended. Discontinue use and contact a qualified appliance repair technician for diagnosis.
How much does it cost to repair error code 24 on a Thermador range?
Repair costs for error code 24 depend on the root cause identified during diagnosis. Wiring repairs or sensor replacements are generally less expensive, typically ranging from around 100 to 300 dollars including labor. Control board replacement on a Thermador range can range from 300 to 700 dollars or more, depending on the specific model and part cost. Getting a diagnostic service call from a certified technician before authorizing repairs is strongly recommended.
Can I fix error code 24 on my Thermador range myself?
Some causes of error code 24, such as loose wiring harness connectors, can be addressed by a knowledgeable DIYer after disconnecting power to the unit. However, if the fault is traced to the main control board or a secondary board, replacement of those components is typically required and is best handled by a qualified technician. Always shut off power at the breaker before opening the range cabinet.
Will resetting my Thermador range clear error code 24?
Disconnecting power to the range for several minutes and then restoring it may temporarily clear the fault code if the issue was caused by a transient electrical event. However, if the underlying component or wiring fault is still present, the code will return. A reset alone is not a repair and should only be used as an initial diagnostic step to check whether the fault is persistent.

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