What E0103 Means
Thermador documents E0103 as a main control board relay problem.
Common Causes of E0103
- A failed relay on the main control board
🔧 One Safe Check You Can Try
Reset the breaker for 30 seconds, then restore power and see if the problem clears.
⚠ Why You Shouldn't Go Further Than That
- A control-board relay isn't a homeowner-serviceable part if the breaker reset doesn't resolve it.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.