NHT 922 Gas Cooktop We used the hair blower and cleaned and vacuumed. 3 of the burners will ignite and light. The other two won't. One won't even click. Are all 5 of the burners supposed to spark when one of the knobs is turned on? Any suggestions. My husband even replaced the igniter device.

SOURCE: knob not working and some burners not heating

The switch under that knob is bad.  It's called an infinite switch.  As far as the elements go, first thing to check is for proper voltage (220) to the cooktop.  Let me know what you find.

SOURCE: Burner knob wont turn

appliance repair and yes you can fix it you likely need an infinite switch

SOURCE: six burner gas cooktop

My husband figured it out.....when we took the knobs off, I, of course, washed the area they had been sitting on, thereby spilling some water into the open part which contained the wires leading to the igniters.  A short time with a hair dryer sorting things out.

SOURCE: (2) front Burner igniters on my new Matag 30" Cooktop continue to click

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.

SOURCE: kitchen gas 4 burner cooktop

i think all igniter switch are grounded,i request to call expert technician to repair it, or uf u want u open the cooktop to see the igniter swicth at konb control area,clean one by one using thinner,remember switc off the plug first.