The MC30WS is Thermador’s Masterpiece® tier 30-inch Speed Oven, combining microwave and convection heating functions in one built-in unit with a more complex control board than a standard microwave. When only one function (microwave heating vs. convection) is affected, that’s useful diagnostic information, since the two heating systems are largely independent even though they share one control board and cavity.
Thermador’s documented E11 touch-button problem (often caused by keypad condensation) applies to this model the same as its standard microwaves — a dry wipe and power cycle is worth trying before assuming a keypad replacement is needed.
Key Features
- 30-inch Masterpiece® Speed Oven
- Combines microwave and convection heating in one built-in unit
- Touch control panel
Most Common Issues on This Model
Won't heat, though display and fan run normally
Touch controls unresponsive (Thermador's documented E11 condensation-related problem)
Convection function doesn't engage while microwave function still works, or vice versa
Display shows a generic numbered "E" error code