SYMPTOM

Burner Does Not Ignite (Pre-Service Checklist)

Appliance: Thermador Dual Fuel Range Models: PRD304GHU, PRD364GDHU, PRD366GHU, PRD486GDHU, PRD364NLHU, PRD486NLHU, PRD484NCHU, PRD305PH, PRD364JDGU, PRD366JGU, PRD486JDGU

⚠ What This Means

One or more STAR burners will not ignite when the control knob is turned on. Before calling for service, there are several common causes to check.

🔧 How to Fix

Check if there is a power outage in your area. Electronic ignition requires electricity.
Check the circuit breaker — reset if tripped. Check household fuses.
Verify the range is plugged in and the outlet has power.
Check that the burner caps are properly aligned and seated on the burner bases.
Check if burner ports are clogged — clean with a wire, needle, or straightened paper clip.
Verify the manual gas shut-off valve is in the OPEN position.
If the burner still won't light, call Thermador service at 1-800-735-4328.

🔍 Possible Causes & Solutions

Possible Cause	How to Fix
Power outage	Electronic ignition requires electricity. Use a match for standard burners during an outage.
Circuit breaker tripped or fuse blown	Reset the breaker or replace the fuse.
Burner caps not seated properly	Remove and reseat each burner cap on its base.
Burner ports clogged	Clean ports with a wire or needle.
Gas shut-off valve closed	Open the manual gas shut-off valve.
Range disconnected from electrical supply	Verify the power cord is connected to the outlet.

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❓ Frequently Asked Questions

Why won't my Thermador burner light?

Start with the basics: check the circuit breaker, verify the gas valve is open, make sure burner caps are properly seated, and clean any clogged burner ports. If the power is out, standard burners can be lit manually with a match.