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Do I have a bad spark modulator or a bad electrode?

The right rear burner spark electrode works only occasionally and has a weak spark. The burner lights well if a match is used. The burner gas port to the electrode is clear. Bad spark modulator? Three of the four burners have a strong spark. The electrode is clean and connections seem tight.

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  • Kitchen Ranges Expert
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Yes, it does sound like you have a bad spark module. But it could be a dirty spark electrode, allowing most of the voltage follow the "dirty path" to ground instead of going through the air. Make sure the electrode (the insulator) part is clean and dry. If you still have a weak spark (or one that goes out when the gas is turned on), they you probably have a bad spark module. If you want to know for sure, try swapping 2 spark wires. Remember that when 1 ignitor sparks, they all (are supposed to) spark.

Posted on Nov 27, 2014

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Posted on Jan 02, 2017

catriver
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SOURCE: Sealed Burner

Ralph, you need to look at the electrodes at the burners. They might be cracked or dirty. It's very hard to tell sometimes when they are cracked. The burner cap itself has to have a good ground and the wires going to the electrode should be on tight. You can eliminate the spark module by switching the right and left side burner wires at the module. Once you do that, if the right side works ok, but now the left doesn't, you can be pretty sure it's the module...Catriver..post back.

Posted on Mar 03, 2007

  • 146 Answers

SOURCE: electric start gas range

You either have a short in your electronic ignition or the ignition board is defective. Check the wiring to the ignition board for shorts. also check and make sure you ignitors are well grounded.

Posted on Dec 21, 2007

  • 2 Answers

SOURCE: multiple sparks when igniting one burner

have a 1997 model 2470 viking pop up camper , has a shower in stalled where does the used water come out ??

Posted on Jun 20, 2009

TheMobilian
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SOURCE: I have a Kitchenaid superba

Pull out the bottom drawer and you will find the spark module. I strongly suspect it is weak. Here is a video that shows operation:
This one shows the module on the backside but I looke dup yours and it is below in the backside of the bottom drawer. Ok here is what i think The igniters could be dirty and I have a video showing how to check that plus another video to show how to remove those pesky switches on the top burners and spark module operation.

TOP BURNER SPARK IGNITION

SEALED BURNER SCREWUP

Posted on Jan 02, 2010

jumptrout51
  • 3361 Answers

SOURCE: One of my gas burners

Yes,all burners spark as a safety feature in the event any gas knob is turned on.
The non sparking burner could be from a bad spark electrode, poor grounding on the burner cap or a bad spark switch for that burner.

Posted on Sep 22, 2010

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When you can see the electrodes sparking but not igniting the burner this usually means one of the module plugs needs to be grounded. When that happens the strong sparking is on the module and the arc at the electrode is very weak.
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Range: Gas burner won't spark or ignite A surface burner igniter switch and a spark module activate the spark electrode when a burner is turned to the "Lite" position on a gas range's cooktop. If the surface burner switch, spark module or wiring in that circuit fails, the spark electrode won't work, and as a result the gas burner won't light. If those components work but the electrode won't spark, the problem could be that the spark electrode is coated with spilled food of is bent or broken. In addition, the electrode won't spark or ignite the burner properly if the ceramic insulation sleeve below the tip of the electrode is cracked or broken. If the gas burner isn't lighting, these repairs may help.
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Replace the spark igniter electrode

1396454293470.jpg The spark igniter electrode-also called the surface burner igniter-is an insulated electrode that provides an ignition spark to light a surface gas burner. It sparks and makes a ticking sound when the burner switch is turned to the Lite position. Replace the spark ignition electrode if it fails to spark or if the ceramic insulation sleeve is cracked or chipped. How to Replace a Spark Igniter Electrode in a Gas Range Find This Part

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1377098014986.jpg The surface spark module is in the ignition circuit for the gas surface burners. When a surface burner control knob is turned to the "Lite" position, it provides voltage to the spark electrodes on the gas surface burners. If the surface spark module fails to provide the electrodes with voltage, then it should be replaced. Find This Part

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1396454315355.jpg The igniter switch is an electrical switch on the stem of the gas surface burner control valve. This switch completes a circuit to the surface burner spark module, causing the burner igniters to spark when the burner switch is turned to the Lite position. Replace the burner igniter switch if the burners don't spark when you turn the burner control knob to the Lite position or if igniters spark constantly even when the burner knobs are in the Off position.

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Well first you need to verify that it is getting proper gas pressure to that burner. Try lighting the burner manually with a match. Does the burner look normal? If the burner flame is really small then you will need to remove the burner head and check the orfice for a restriction. If it looks normal then it probably is a weak spark from the igniter, igniter electrode is out of position, or burner head has dirty ports at electrode causing no ignition. Inspect the burner head. If it is removable then take it off and clean out the burner ports(eyes) with a sewing needle. If it is not easily removable then try doing this while it is still installed on the range. Also try using a wire brush on the electrode to clean any carbon/debris build-up casuing a weak spark. You can also try bending the electrode slightly with a flatblade screwdriver(be careful don't break the elctrode) away from the burner creating a larger spark.

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MOST modern appliances that use gas ignition (including dryers) no longer have a pilot light. These appliances are now equipped with a burner assembly with electronic igniters. The following link explains a little theory about how these igniters work and how to access the them on a gas range:

http://www.fixya.com/support/r401858-replacing_oven_igniter_gas_range

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A weak erratic spark from one or more electrode usually indicates a bad spark module. No spark from one of the electrodes while the others work properly usually indicates a bad electrode. Inspect the porcelain of the electrode for cracks, chips or burn marks. If there are any, the electrode should be replaced. If one of the burner knobs is turned to the light position and nothing happens, but all the others function correctly, the spark ignition switch for that one burner is likely bad. The switch can be taken out of the system and checked with an ohmmeter. It should close for continuity at the light position only.

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Hi JHMcdona

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Ralph, you need to look at the electrodes at the burners. They might be cracked or dirty. It's very hard to tell sometimes when they are cracked. The burner cap itself has to have a good ground and the wires going to the electrode should be on tight. You can eliminate the spark module by switching the right and left side burner wires at the module. Once you do that, if the right side works ok, but now the left doesn't, you can be pretty sure it's the module...Catriver..post back.

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