What Simmer Burner Goes Out means on your Dacor rangetop (dacor rangetop simmer burner goes out)
Because Dacor defines no error code for a rangetop in this condition, this page describes the symptom directly. A burner that lights and holds at medium or high but drops out at the lowest simmer setting almost always means the low-flame gas volume is set too small for that burner’s current condition — often because ports are partially restricted, which lowers the minimum stable flame below what the valve is calibrated to deliver.
Symptoms
The signs below separate this condition on your Dacor rangetop from other problems that present almost identically on a rangetop.
- The burner lights and stays on at higher settings without trouble.
- Turning the knob down to the lowest simmer position causes the flame to shrink and then go out.
- The flame flickers noticeably right before it extinguishes.
- The problem is worse on humid days or shortly after the cooktop was cleaned.
Common causes
Work down the causes below in the order given: on a Dacor rangetop the first two account for most of these calls before a rangetop technician is needed.
- Partially clogged ports narrowing minimum flame — enough debris to lower the smallest stable flame below the valve’s calibrated minimum.
- Moisture in the burner well — leftover cleaning liquid destabilizes a small flame more than a larger one.
- Drafts near the cooktop — a nearby vent, window, or range hood on high can blow out a low flame.
- Low-flame adjustment drifted — the internal low-flame screw on the valve can shift slightly with age or after service work.
Troubleshooting steps you can try
An owner can safely attempt everything below on a rangetop, and everything beyond it on a Dacor rangetop is a technician’s job, with no shame in stopping early.
- Clean the burner ports thoroughly and let them dry completely before testing again.
- Turn off nearby exhaust fans or close a drafty window while testing the simmer setting.
- Light the burner on a medium setting first, then slowly turn down to the lowest position rather than starting cold on simmer.
- Note whether the problem happens on every low attempt or only intermittently.
- Book a technician to check the valve’s low-flame adjustment if cleaning and draft control do not resolve it.
Parts a technician may replace
The parts most often in question on a rangetop here are the burner valve, low-flame adjustment screw, burner orifice, and air shutter. Which one has actually failed on your Dacor rangetop is settled by measurement, and nothing is ordered for the rangetop before that.
When to call a technician
A technician adjusts the low-flame setting screw on the gas valve to the manufacturer specification rather than leaving it to guesswork. This rates Medium on a rangetop, so take your time — but do not keep clearing Simmer Burner Goes Out on the rangetop without finding out why. The technicians who will see your rangetop are ours, not Dacor’s, and their labor is covered for 30 days.
Related help and Dacor resources
Where the Simmer Burner Goes Out condition persists on a rangetop, stop retrying and arrange service. See also our rangetop repair guides, our service areas, and www.dacor.com for the rangetop specification.
