Thermador Range Repair in Denver: Star Burner Problems & Oven Issues
Thermador range not igniting, oven not heating, or ExtraLow simmer not working? Here is a complete guide to Thermador range problems and repair costs in Denver.

Thermador Range Repair in Denver: Star Burner Problems & Oven Issues
Thermador ranges are distinguished by their signature Star Burner — a five-pointed burner design that delivers more even heat distribution than traditional circular burners. When a Thermador range needs service, the Star Burner system and ExtraLow simmer technology require brand-specific knowledge to diagnose and repair correctly.
Thermador Star Burner Not Igniting
The Star Burner's five-pointed design has more burner ports than a standard circular burner, which means more potential points of clogging. This is the most common Thermador range service issue.
Clogged Star Burner Ports
Food debris and grease accumulate in the star-shaped burner ports over time. Because the Star Burner has more ports than a standard burner, it requires more thorough cleaning.
DIY fix: Remove the burner cap and use a toothpick or thin wire to clear each port. Soak the burner cap in warm soapy water, then dry completely before reinstalling.
Service cost if done professionally: $75–$125.
Faulty Spark Electrode
The spark electrode positioned next to the Star Burner can crack or corrode, preventing ignition.
Repair cost: $125–$225.
Faulty Igniter Module
The igniter module controls all burner electrodes. A failed module typically affects multiple burners simultaneously.
Repair cost: $175–$325.
Continuous Clicking After Cleaning
If the range clicks continuously after cleaning, moisture has gotten into the spark switch. Allow the range to dry completely (30–60 minutes) before testing. If clicking persists, the spark switch needs replacement ($100–$200).
Thermador ExtraLow Simmer Not Working
Thermador's ExtraLow simmer burners can maintain temperatures as low as 100°F — lower than any standard residential burner. This is achieved through a special simmer valve that cycles the burner on and off rapidly.
ExtraLow Simmer Valve Failure
When the simmer valve fails, the burner either will not maintain low temperatures or will not light at all on the simmer setting.
Repair cost: $175–$350.
ExtraLow Control Module Failure
The control module that manages the ExtraLow cycling can fail, causing the simmer function to behave erratically.
Repair cost: $200–$375.
Thermador Oven Not Heating
Gas Oven Igniter Failure
Thermador gas ovens use the same glow bar igniter system as other premium gas ranges. Igniter failure is the most common oven heating problem.
Repair cost: $175–$325.
Electric Oven Element Failure (Pro Harmony and Pro Grand)
Thermador's dual fuel ranges use an electric oven. Bake and broil element failures are common.
Bake element: $150–$275 Broil element: $150–$275
Thermador Oven Temperature Sensor Failure
Repair cost: $125–$225.
Thermador Oven Control Board Failure
Thermador shares its control board platform with Bosch (both are BSH brands). Control board failures are less common but do occur.
Repair cost: $250–$500.
Thermador Range Error Codes
Thermador ranges display error codes on the control panel. Common codes:
| Code | Meaning | Typical Repair Cost |
|---|---|---|
| E0 / F0 | Control board fault | $250–$500 |
| E1 / F1 | Temperature sensor fault | $125–$225 |
| E3 | Oven overheating | $125–$375 |
| E9 | Door lock fault | $150–$275 |
Thermador Range Repair Costs
| Repair | Typical Cost |
|---|---|
| Star Burner port cleaning | $75–$125 |
| Spark electrode replacement | $125–$225 |
| Igniter module replacement | $175–$325 |
| ExtraLow simmer valve | $175–$350 |
| Gas oven igniter | $175–$325 |
| Bake/broil element | $150–$275 |
| Temperature sensor | $125–$225 |
| Control board | $250–$500 |
| New Thermador range (36") | $5,000–$10,000 |
Same-Day Thermador Range Repair in Denver
We carry common Thermador/BSH parts and have experience with the full Thermador product line.
Call (720) 333-0874 for same-day Thermador range repair across Denver metro.
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