Thermador
Control Logic or Safety Interlock Issue
Clock and timer functions work, but oven will not start any cooking cycle (no heat).
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Possible Causes
Child lock or Sabbath mode enabled, Door switch not detecting closed door, Faulty relay outputs on EOC, Mis-set timer or delayed start
How to Fix / Troubleshooting
Safety first: Most checks are from the front panel; internal work requires power off.
- Check modes: Ensure the oven is not in child lock or Sabbath mode. Disable these features per the user manual.
- Door switch: Verify the oven recognizes the door as closed (some models show an icon). Test and replace the door switch if it does not change state when the door is opened/closed.
- Timer settings: Cancel any active timers or delayed start programs that may be preventing immediate operation.
- Control outputs: If all settings are correct but no heat is produced, the EOC may not be energizing the relays and may need replacement.
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Repair Difficulty
Easy
2/5
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