The igniter spark for all gas rings remains on permanently without pressing down the gas flow knobs. I can see nothing prompted this - I just came into the kitchen one morning to hear the igniter clicking - it was sparking on all burners

I think the problem lies at your knob mechanism. Try to service the mechansm. Currently the possible problem is lies at the contact point(electrical) might accidently contact without pressing down the knob. This normally occur when it is hyper press or there are grease in between the contact. Possible solution is replace the damage knob... or repair it.

The spark gap needs to have flow of gas across it for ignition to occur. The gas outlet holes at the point where the igniter sparks may be blocked, clean and inspect these for any blockages. Also check that the igniter spike is in the correct place. Careful evaluation of the position of the igniter in reference to the gas ring on the other rings may help you here. Good luck

hi gud day,try to clean the area of knobs by using vacium,remove all the knobs firts then clean it,unplug the unit before u clean.

tnx gerbee

I don't have a Thermador cooktop but here is ma taught.

Could you unplug the two faulty igniters and see if problem remained

Could you plug one of the faulty igniter at the location of a good one. The goal is to isolate the problem. Is it the igniter or the electronic board.

Faulty ground problem may occur also after an spillover on the stove. In that case, use a cotton swab dipped in scrubbing alcool and clean the spark area on the igniter and the burner.

Good luck

it is strange that you have no gas and no spark! if you held a match to the burner and turned the burner valve on it would lite di spite a failed ignitor,but for it not to lite, the burner valve[its what the knob attaches too] would have to be blocked[thats rare]or ........i got it .....the knob is broken.thats the only thing the burner valve and the spark ignitor have in common.try a knob from another burner................again.you have spark,because others are working.spark on troubled burner would work if valve blocked at orifice outlet,and if spark failed you would still get gas they work independent of each other,[but in unison].thats why im thinking knob.its the item that works both .when you turn the knob it opens the gas valve and as the gas valve rotates by turning the knob it activates or turns the spark switch so it closes the curcit allowing the electricty to the spark moduel.hey i hope that helps a little. God bless ,tom

is this a sealed burner unit? if so the burner base (the heavy brass part under the burner cap) has to be sitting just right. you will notice that it has holes around the the sides make sure that where your ignitor sparks to it that it aligns with the lowest hole on the burner base. if you have a great flame all around the burner after checking what i mentioned i would replace the spark module. if it continues to drive you crazy with the noise - just unplug it. the burners will continue working fine without power.

try easing each knob upwards a bit.

you have a short in the ignition switches. these are located at the base of every stem under the knobs. In order to get to them you have to remove the entire cooktop, which entails removing all of the burners. The switches are run in parallel on a single harness.

problem with hob is probably water ingress in area of ignition unit - will probably cure itself oven is a completely separate unit from hob. problem with it is that you have to re-set the clock - you have it on automatic. after power outage, oven clock always has to be reset