| Error Code | Appliance | Meaning | Safe first steps | Technician required | Related help |
|---|---|---|---|---|---|
| Ice maker fault | Refrigerator | The ice maker has a fault or ice production is not functioning correctly. | Switch off the appliance. Disconnect it from power or turn off the circuit breaker. Reconnect after 5 minutes and switch the appliance back on. | Yes — if the message still appears after the reset. | |
| Er after appliance self-test | Refrigerator | The appliance self-test found a fault that requires customer service. | Run the self-test only as described in the manual. If 5 audible signals sound and Er appears, stop further checks. | Yes — unless the alarm returns while the door is fully closed. | |
| Error 404 | Refrigerator | Home appliance could not be connected because Home Connect data is missing. | No user repair is listed by Thermador. Home Connect data has to be flashed by customer service. | Yes — if the freezer does not return to the set temperature. | |
| E0100 | Dishwasher | Heat pump motor circuit fault at the main control board. | Reset power at the breaker for 30 seconds and retest. | Yes — service/support is required. | |
| E0103 | Dishwasher | Main control board relay fault / error. | Reset power at the breaker for 30 seconds and retest. | Yes — service/support is required. | |
| E + number | Oven | Fault / error code appears on the display and the control beeps. | Press TIMERS or any key to stop the beeping and reset the oven if needed. | Yes — service/support is required. | |
| E7010 | Induction Cooktop | Cooktop is unable to connect to the home network (Wi‑Fi) or to the hood. | Switch the appliance off and on again. | Yes — service/support is required. | |
| E8206 | Induction Cooktop | Wireless cooking sensor is faulty. | No user repair recommended beyond disabling the feature and arranging service. | Yes — call support and provide the exact error code. | |
| "D" or "E" on display | Electric Cooktop | Operational fault / error. | Switch the appliance off and on again. | Yes — if the message appears again after restart. | |
| Oven: E + number | Ranges | Range oven fault / error code appears on the display and the control beeps. | Press TIMERS or any key to stop the beeping and reset the oven if needed. | Yes — if the message appears again after restart. | |
| Induction: U400 | Ranges | Range induction supply voltage is incorrect and outside the normal operating range. | Do not service the appliance internally; verify the home's electrical supply. | Yes — if the message appears again after restart. |
Thermador Appliance Error Codes and Precision Service Insight for Bay Area Kitchens
Thermador error codes can point to voltage faults, control failures, sensor communication problems, heating interruptions, cooling alerts, filter reminders, ice maker issues, or diagnostic warnings. Hotline Appliance Repair helps Bay Area homeowners understand these signals across premium kitchen and refrigeration appliances before expert service.

