When the large burner is on, it keeps trying to ignite

The only thing I can think of is the the igniter has some faulty insulation and the pot is completing the circuit, or the pot is pressing something. They do have an igniter service kit.

https://www.dacorparts.com/content/DacorLookups/PGM365-1.pdf

..

It is a gas appliance and it is a Miele, so you need a registered gas technician to service it. In my experience, the spark igniters work on all burners. To clean the burners, remove them all and put them in a large saucepan. Add cold water and dish liquid, bring slowly to a simmer and turn off. When cold, rinse and scrub with a plastic pot brush, paying particular attention to holes and slots. This was a job we did in the restaurant every week. It is a good plan to do before you go to bed for the least disruption.

The product specs says;

Automatic re-ignition •
Sealed burners
•
M Pro Dual Stacked Burner System

So perhaps my hack won't work if they aren't removable.

I found this video :>)

https://blog.yaleappliance.com/new-miele-hr1124-30-inch-professional-gas-range

..

What is your altitude?I have the same problem and was told by Dacor that I should have the high altitude version. I'm at 5000'

I have the same problem, but my cooktop is a 6 burner and it is not the extra low setting burner.

There is a thermistor that must be in the flame area that needs to get hot. When hot it will turn the igniter off and keep the flame on. Check it's location and if it is in the flame then it needs to be replaced. not sure about the central flame problem. could be the switch.

I'm dealing with this same problem. This cooktop has a dedicated simmer burner which is the only thing going on the lowest setting. This simmer burner seems to be how the igniter senses that it can stop. If it doesn't light, the igniter keeps clicking. Usually cleaning the burner will solve this. You may need to unscrew the nut holding the lower piece of the burner in place in order to clean it up.
Good luck!

replace the igniter.

Most likely you got water (or some other liquid) into the control knobs. Unplug, go to bed and try it again in the morning. If you continue to futz with it, you run the chance of burning out the electronics in the control knob, like I did. :(

I've had the same problem for 2 years. Today I removed the four burner tops, the 15/16 inch bolt that holds the burners in place, took everything apart (simple connections underneath), completely cleaned and dried eveything. I also cleaned the 4 knobs and making sure the 4 swiches slide up and down freely then dried everything with a hairdryer. Is now works fine but if the problem comes back, I'll simply unplug the cooktop and light it manually. P.S. I stripped one of the large 5/16 inch bolt that had become weak and brittle. - Try using water or some liquid to loosen the bolts as necessary. Good luck, CHEERS!

I would try cleaning the burners. You can purchase cleaning brushes made specifically for this purpose and they work like a charm.