What dE Means
Documented identically on both Thermador's Electric and Induction Cooktop platforms: demo mode has been activated, and no cooking zone will heat while it's on.
Common Causes of dE
- Demo mode left active from a showroom/display setting
- Demo mode toggled accidentally
🔧 One Safe Check You Can Try
Disconnect the cooktop from power for 30 seconds via the circuit breaker or fuse, then touch any control within 3 minutes of restoring power.
⚠ Why You Shouldn't Go Further Than That
- If the documented reset doesn't clear it, continuing to try the same fix repeatedly delays a real diagnosis.
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.