Constant clicking from electric pilot connection. won't stop after leaving for long time, unplugging overnight, cleaning all burners, running gas by lighting with match and letting the flame run. Only one burner is clicking. We just had long power outage and this is the only problem in the house since power was restored. Hope you can advise. The stove top is 30" 4 burner, 10 years old. Has run beautifully.

you have a bad set of switches and or a spark mod..

Hello,
The problem is one(or more) of the 6 switches that turn on the spark when that burner is turned on is shorted and stays closed (on) all the time.To determine which one it is the front face has to be removed,with THE POWER OFF a meter set to low ohms rating is used to check each switch by removing the wires to it and see which one has continunity (ZERO OHMS) when its off and that switch that slips on the burner valve shaft is the bad switch(s) and needs to be replaced to keep it from sparking all the time.
Please note though, in a perfectly working cooktop all burners spaks at the same time and only the only one that has the gas flowing to it will ignite,that part is normal.

I hope this helps you to repair your cooktop,
Gene

The most common cause for this issue is from liquid getting into the ignition system for the range. If someone has spilled water or other liquids into the burner knobs or the ignition system it will cause an electrical short in the system causing the igniters to come on constantly when the knobs are off. The fix to this is to unplug the range and wait 24 hours for the liquids to dry up. You can speed up this process with a hair dryer pointed at the burner stems(knobs removed). Once the liquids have dried up the problem should stop. I would not leave it plugged in until then because the ignition system could be damaged from the constant sparking.

Usually, constant clicking is caused by water getting down under the glass or metal cooktop. Just unplug the unit and let it dry for a day or two. 

your spark modual got shorted with the liquid you sprayed in there or spilled you can try unplugging it overnight to let it dry. at least 24 hours or you can take the cooktop of and get a hairdryer and dry out the spark modual.or if you wait 24 hours - 3 days and still not dried out you need to replace your spark modual but more than likley give it time it will fix itself.

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

When cleaning, if the control switches get damp, they will react as you describe.
Unplug the appliance, use a hair dryer and attempt to dry the switches.
Leave it unplugged overnight and try them again tomorrow.
They will eventually dry and be OK.

Make sure yo haven't spilled liquid on the ignitor becuase this will cuase all ignitors to spark constantly. If all is dry, the spark module must be replaced.

Sounds like water got into one of the switches. This usually happens when you wash the knobs. Water stays in the holes and runs down the shaft when replaced. Maytag has issued a recall on some stoves because this can be a fire hazard. UNPLUG THE COOKTOP UNTIL THIS IS FIXED!!!!!!!!! This has happened to me with a whirlpool unit and it tripped a breaker and shot sparks across the kitchen. First go to Maytags web site and see if yours has a recall. If so Maytag will fix it free. While you are waiting leave stove unplugged and light with a match. If you need to fix this yourself disconnect the wires from the two switches this should stop the sparking. Connect one switch at a time and see which switch is bad. Most of the time the electric part of the gas valve can be replaced seperately. and you can do this yourself. If you must actually disconnect a gas pipe unless you really know what you are doing call for service.

its a gas cooktop it has to be plugged in somewhere op e the cabinet and unplug it. possible that the electrodes got wet and click from a false sense of continuity, after being unplugged overnight that will sometimes be enough. you also might have a bad start switch on one of hte burners causing the machine to click automatically. try unplugging over night first