Dacor Rangetop FLAME-OUT Error: Burner flame went out
Dacor rangetop flame-out — essential information for Dacor appliance owners. This dacor rangetop burner keeps going out guide explains what this fault means for your Dacor appliance and how to respond safely. A flame-out fault on a Dacor Heritage rangetop occurs when a lit burner extinguishes unexpectedly and the flame-failure device (FFD) automatically closes the […]
~50%
DIY Fixable
From $225
Typical Repair Cost
45-90 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. The FFD safety system is working correctly — it closed the valve when the flame went out, preventing gas accumulation. The rangetop can be used, but the underlying cause should be identified to prevent repeated flame-out during unattended cooking.
Can I reset the code?
Yes. Wait 60 seconds after flame-out, then reignite while holding the knob in for 15 seconds. If the thermocouple is healthy and positioned correctly, the burner will relight and stay lit.
When to stop immediately?
Stop if you notice: Stop cooking if the flame goes out and you smell gas — ventilate immediately and do not attempt reignition., Do not leave a burner prone to flame-out unattended, especially during long simmering..
Symptoms You May Notice
Burner flame extinguishes during cooking
A lit burner goes out unexpectedly — not from user action — and the gas valve closes automatically. The flame-failure device (FFD thermocouple) has detected the loss of heat and shut the valve within 30–60 seconds.
Burner will not relight for 30–60 seconds after going out
After flame-out, the thermocouple takes time to cool and the FFD valve to reset. Attempting to relight immediately often fails — waiting 60 seconds allows the safety valve to reset fully.
Flame only stays lit when knob is held in
Releasing the knob after ignition causes the flame to extinguish within seconds. This indicates the thermocouple is not reaching operating temperature fast enough to hold the FFD valve open.
Low-power burner flame is unstable in drafts
At simmer settings, the low flame is easily disrupted by kitchen ventilation, open windows, or the rangetop's own range hood downdraft, causing unintended flame-out.
Possible Causes
Contaminated or mispositioned thermocouple
The FFD thermocouple tip must be positioned directly in the burner flame. Grease accumulation on the tip reduces heat absorption, causing the FFD to read insufficient temperature and close the valve.
DIY PossibleDraft from range hood or ventilation disrupting the flame
High-CFM range hoods positioned too close to the rangetop surface can create airflow conditions that extinguish low burner flames, particularly on simmer settings.
DIY PossibleFailing FFD thermocouple
An aging thermocouple with degraded output voltage cannot hold the FFD safety valve open reliably, causing repeated flame-out even with a healthy flame present.
Requires ProfessionalSafe Checks You Can Do
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1
Clean the thermocouple tip
Locate the thermocouple — a small metallic rod positioned near the burner flame path, distinct from the spark electrode. With the rangetop cool, gently wipe the thermocouple tip with a cloth dampened with white vinegar or fine steel wool (no. 0000) to remove oxidation and grease. Do not bend the rod.
The thermocouple should be a copper or steel-colored rod approximately 1.5 inches long positioned to sit in the burner's inner flame ring.
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2
Hold the knob in longer at ignition
After lighting the burner, hold the knob in the ignite position for 10–15 seconds before releasing. This gives the thermocouple time to heat up and generate enough voltage to hold the FFD valve open. Releasing too quickly — within 3–4 seconds — will cause flame-out even on a healthy system.
The thermocouple holding time is longer on rangetops with a cold thermocouple — particularly on first use of the day.
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3
Reduce range hood CFM for low-flame cooking
If flame-out occurs primarily at simmer settings, try reducing the range hood to the lowest speed setting during simmering. High-velocity downdraft hoods in particular can extinguish low rangetop flames. Confirm whether the problem only occurs with the hood running.
Position lids partially over pots during simmering to protect the flame from hood-induced drafts.
When to Call a Professional
Contact a qualified technician if:
- Burner flame-outs persist after thermocouple cleaning and knob-hold technique — thermocouple replacement required.
- Knob must be held in for more than 30 seconds to keep flame lit — FFD valve or thermocouple has significantly degraded.
- Multiple burners exhibit flame-out — gas manifold pressure check recommended.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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