Thermador Oven: not igniting

Possible Causes

Faulty oven igniter

How to Identify: Igniter fails to glow or glows dimly and the gas does not ignite; oven repeatedly attempts to start without flame.

Part: Oven bake igniter

Clogged pilot assembly or burner ports (standing pilot models)

How to Identify: No pilot flame or weak/yellow pilot flame where debris or dirt obstructs gas flow; cleaning restores proper flame.

Part: Pilot light or burner orifice

Gas supply or valve issue

How to Identify: No gas flow despite igniter attempts; another appliance also not receiving gas; verifying that supply is open indicates gas-related issue.

Part: Gas valve or supply line

Electrical connection or control module fault

How to Identify: No spark from igniter despite proper power; multiple ignition attempts with no spark and other components check out normal.

Part: Control module or wiring

DIY Solutions

Clean pilot or burner orifice (standing pilot models)

Moderate 15-30 minutes

Tools Needed: soft brush, compressed air, needle or wire

1. Turn off gas supply and ensure oven is cool.
2. Access pilot light area and gently clean debris from orifice with needle or wire.
3. Use compressed air to remove loose dirt.
4. Restore gas and attempt ignition.

⚠️ Safety First: Turn off gas supply first

Inspect and test oven igniter

Advanced 20–40 minutes

Tools Needed: multimeter, screwdrivers

1. Disconnect power to oven.
2. Remove oven bottom panel to access igniter.
3. Visually inspect igniter for cracks or damage.
4. Use a multimeter to test continuity of igniter.
5. If continuity is absent or out of spec, replace igniter.

⚠️ Safety First: Disconnect power first

Professional Repairs

Replace oven igniter

Estimated Cost: $50 - $150 for part plus labor

Inspect and repair gas valve or control module

Estimated Cost: $150 - $400+

When to Call a Professional

If smell of gas is present

If DIY steps do not resolve ignition failure

If electrical components (control module, wiring) may be at fault

Preventive Maintenance

• Clean burner ports and ignition components: Debris buildup causing ignition failure
  Frequency: annually
• Inspect igniter condition: Failing igniter issues
  Frequency: annually

Frequently Asked Questions

Why is my Thermador Oven not igniting?

Common causes include a faulty igniter, clogged pilot assembly, or gas supply issues.

How do I fix Thermador Oven not igniting myself?

You can clean the pilot or burner orifice or inspect the igniter for cracks.

How much does it cost to fix not igniting?

Replacing the igniter costs $50 - $150, while gas valve repairs range from $150 - $400+.

When should I call a technician for not igniting?

Call a technician if DIY solutions fail or if you are uncomfortable with advanced repairs.

References & Sources

• Test The Oven Bake Igniter on Thermador Community
• Gas Oven Not Igniting? Fix It Fast Community

Common Issues Reported by Users

• Faulty ignitor (1 mentions)
• Defective control board (1 mentions)

User Suggested Solutions