One burner will not light. Lights fine with a match.

See if it light with a match , if it dose change the striker on the stove.

Electronic igniters go bad and they don't work well if wet. Make sure yours are dry and change it if it still doesn't work. If the burner lights with a match, gas is getting to the burner. If it doesn't light, have the line checked for a blockage.

IS THE POWER TO THE HOB ON ?
IF SO IS THE FUSE OK ?
IS THE PLUG WIRED CORRECTLY ?
TRY THESE FIRST, IF NO JOY YOU CAN DOWNLOAD YOUR PRODUCT GUIDE FROM CDA ON LINE

Have you removed the burners covers and top to see if the PILOT LIGHTS may have blown out? Hold a stick match or fireplace match (long stick) down in the area of the circular burner after turning on some gas. The burner should light and the pilot light should stay on as well. You local gas company provides service for this type of problem. Call them and have a gas company representative make a home call (free service) in most areas.

Most gas range tops no longer have pilot lights but use an electronic ignition (sparker) to light the burner. Normally when you turn the burner on you should here a snapping or sparking sound, at which point the burner should ignite. Here is a link to the user manual for 36" - 5 burner Thermador rangetop...maybe this will help: http://dl.owneriq.net/a/ac64ae7b-1ed3-44a3-9235-e4dbd8fe4628.pdf

By the way, in the short term you could always use a match to light the burner. JUST BE VERY CAREFUL THE YOU HAVE THE MATCH LIT AND OVER THE DESIRED BURNER BEFORE YOU TURN KNOB TO START THE BURNER!!!!

you have a problem with the ht leads or spark electrodes

Hold a match to the burner in question and see if it lights.
That will verify if it is a valve problem or a ignitor problem.
If it lites with a match the burner electrode needs cleaning or repair or adjustment.

Yes, you need a technician. It could be spark module or spark igniters on each burner.

I’m happy to help further over the phone at https://www.6ya.com/expert/vitaliy_f406165329c75ede

had same problem. Used fine sandpaper on the little head (just above the white ceramic) that creates the spark. over the years the edges of the littel metal ring had gummed up but a 1 min sanding got it down to shinny metal and it sparked nicely.

Replace that ignitor on that burner only. Not drawing enough amps to spark properly.