The CM302 shares its Care & Use Manual, model family, and full feature set with the CM301 – both are legacy 30-inch combination convection/microwave wall ovens with a Custom Combination Mode, standalone Microwave Mode, documented Convection Bake/Roast/Broil charts, and a probe-equipped Convection Roast and Probe Mode. Thermador’s manual treats them as close siblings rather than distinct designs.
Service approach is identical to the CM301: separate microwave-side signs (weak or no heat, arcing, turntable failure) from convection-side signs (uneven baking, probe errors), since the two heating systems in this combination oven fail independently of each other.
Key Features
- 30-inch built-in combination convection/microwave wall oven
- Custom Combination Mode blends microwave with convection heating
- Separate Microwave Mode, Convection Bake, Convection Roast, and Broil/Convection Broil modes
- Convection Roast and Probe Mode with a meat-probe input
- Documented in the same 64-page Care & Use Manual as the CM301
Most Common Issues on This Model
Custom Combination Mode inconsistency traced to a weakening magnetron
Meat probe or probe port failure in Convection Roast and Probe Mode
Convection fan motor wear
Door seal wear affecting microwave containment and heat retention
Aging control panel/relay failures typical of this generation