Natasha C Hampstead , MD September 09, 2020 Appliance: Thermador Range RDDS30VQ Thermador Range Rdds30vq: Two burners were no longer lighting. How to replace Gas Burner Seal. Replaced the solenoid in the one with the low simmer feature and replaced the igniter in the other standard burner. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes