Thermador Coffee Maker Error 12-00

⚡ Quick Answer: The Thermador Coffee Maker error 12-00 indicates a power failure or that the appliance was turned off at the power switch. This error often appears on... ✅ DIY Fixable

What Does Error 12-00 Mean?

The Thermador Coffee Maker error 12-00 indicates a power failure or that the appliance was turned off at the power switch. This error often appears on the display as '12:00' after a power interruption, prompting the user to re-enter clock and menu settings. If you hear unusual grinding noises and the machine fails to brew coffee, it may also signal a malfunction in the brew group.

Common Symptoms:

  • Display shows a time string like “12:00” after power loss or reset
  • Appliance prompts re‑entry of settings instead of normal operation

Possible Causes

  • Power interruption or appliance turned off at main power switch (high)

How to Fix Error 12-00

DIY Fix Re‑enter settings and ensure stable power

  1. Check that the coffee maker is switched on at the mains power switch.
  2. Re‑enter the time and any menu settings as prompted on the display.
  3. Avoid turning off the appliance at the power switch during normal operation or adjustments.

Technician Only Verify power integrity and internal memory retention

  1. Inspect the mains power connection and ensure there is no loose wiring.
  2. Check for any issues with internal power supply components that may cause resets (e.g., backup memory capacitor).
  3. Test clock/microcontroller memory retention under varying power conditions.

Parts needed: Internal power supply board, Backup capacitor or memory retention components

🛑 When to Call a Pro:
  • The error persists after restoring stable power and re‑entering settings.
  • Machine repeatedly resets its clock or user settings without apparent power loss.

Technical Specifications

wattage 1500W
component Brew Group Assembly
resistance N/A
part_number Thermador 900019123
voltage_rating 120V AC

Common Questions

What does 12-00 error mean on Thermador Coffee Maker?

The 12-00 error indicates a power failure or that the machine was switched off, prompting the user to reset clock/menu values.

Can I fix Thermador Coffee Maker 12-00 error myself?

Yes, you can fix it by ensuring stable power, turning the machine on, and re-entering the time and menu settings.

How much does it cost to fix 12-00 error?

Repair costs can vary, ranging from diagnostic fees to minor part replacements.

When should I call a technician for 12-00?

Call a technician if the error persists after restoring power and re-entering settings, or if the machine frequently resets without power loss.

Sources & References

Data last verified: 2026-07-07

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