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Gas Stove, Cooktop, & Wall Oven Repair Maintenance & Tips
Gas Stove Top & Cooktop Repairs
Gas stove top and cooktop repair is fairly easy. Gas appliances will usually last longer then there electric counterparts. Gas valves and burners very rarely go bad or wear out. The biggest gas stove top or cooktop repair is usually the electric portion of these units, the switch, ignitor or spark module.
Switch On the burner valve, there is usually an electric switch of some sort. The switch either turns on or off depending on the position of the knob. This switch will either power each individual ignitor on your burners, but more likely, goes to a spark module which controls all the ignitors. That is why all your ignitors “click” or spark to light the gas.
The more common system for switches and ignitors is the central spark module that lights all ignitors to all the burners at the same time. When the switch is turned to a specific position for lighting, it closes the switch circuit and the ignitors spark.
Some systems you must turn the knob to stop the spark. Other systems the ignitor acts like a thermocouple and sends a message back to the spark module and turns off the spark. This happens in just a matter of seconds.
The switch can easily be tested with an OHM meter. Just test the switch for open or close operation. Some makes have all valve switches as a one unit, so all switches get replaced at once.
Ignitor Each ignitor can be tested with an OHM meter to see if they are still good. Most of the time, though, a bad ignitor will be evident.
Ignitors also will not spark if the spark has no where to go. If the ignitor area gets extremely dirty with grease and such, the spark will not be able to “jump” to the burner. If it can’t spark, it won’t light the gas. Most burners you can take the top portions off and clean them out of grease and grime. Other burners are sealed and can not be cleaned out, then the whole burner might have to be replaced.
Spark Module Spark module can be tested with your voltmeter. One note, make sure the 120 volt line coming into your unit is polarized and you have a proper ground. If you have proper voltage to the module, turn a valve switch on and check for voltage coming out. If no voltage, then you need a new module. Occassionally, a module will stop one switch from working, either way you still need to replace the module.
On gas stove tops, the spark module is mounted somewhere on the back of the gas stove, possibly in the console with the stove control. In gas cooktops, there is usually an access panel you can take off from underneath.