Igniter/spark issue

Oven Repair (including Ranges and Cooktops)
,
1

I had an issue with front burners not sparking enough and thereby not igniting the gas.

I purchased two igniters, replaced them, and this only fixed one of the burners, the other front one wouldn’t spark (front right). I then decided to switch around one of the working burner assemblies (the rear one) with the one that wasn’t igniting (front right). Once switched, the (front right) burner assembly worked fine at the rear position, and the previously working burner (rear) now at the front position would rarely spark if at all.

The igniter switch switch seems to be fine, since all the other burners start sparking, except for the front right when I turn it on.

I think it may be the ignition module, which I just ordered.

Please let me know what part I should now replace. I could also use some instructions on how to replace the part at issue (if it is the module). I did take a loot at the exploded (disassembled) diagrams of my oven posted on this site.

Thank you for your help.

3

I believe the ignition module (aka a spark module) should solve the problem. It could locate behind the rear cover or under the oven (you have to remove the bottom drawer) on the right hand side.

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?diagram_id=639975&&model_id=45337

Gene.

4

This is so similiar to my problem that I thought that I had posted it. WE have bought a spark igniter electrode for our Bosch Gas Cooktop but need some directions on how to replace it. Did you find a site for instructions?
MaStone

— Begin quote from vv220;87697

I had an issue with front burners not sparking enough and thereby not igniting the gas.

I purchased two igniters, replaced them, and this only fixed one of the burners, the other front one wouldn’t spark (front right). I then decided to switch around one of the working burner assemblies (the rear one) with the one that wasn’t igniting (front right). Once switched, the (front right) burner assembly worked fine at the rear position, and the previously working burner (rear) now at the front position would rarely spark if at all.

The igniter switch switch seems to be fine, since all the other burners start sparking, except for the front right when I turn it on.

I think it may be the ignition module, which I just ordered.

Please let me know what part I should now replace. I could also use some instructions on how to replace the part at issue (if it is the module). I did take a loot at the exploded (disassembled) diagrams of my oven posted on this site.

Thank you for your help.

— End quote

5

mastone said:
This is so similiar to my problem that I thought that I had posted it. WE have bought a spark igniter electrode for our Bosch Gas Cooktop but need some directions on how to replace it. Did you find a site for instructions?
MaStone

What is the complete model number of the cooktop?

Gene.

6

— Begin quote from Gene;378439

What is the complete model number of the cooktop?

Gene.

— End quote

Bosch Cooktop model NHT922

7

mastone said:
Bosch Cooktop model NHT922

You have to remove the whole glass top in order to access the igniter.

Remove the burner caps. Unscrew the three screws holding each base ring. Very likely most of them are rusted in, so you will need to drill out such screws. While doing that try not to damage the burners.

Remove all knobs and carefully pull up the glass top. The igniter is attached to the burner.

If you do not feel comfortable to do it yourself then hire a pro to do it for you.

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?model_id=232210

Gene.

8

How do you disconnect the spark igniter electrode from the burner? Do you have to disconnect the gas line and remove the burner?
Thanks.

9

mastone said:
How do you disconnect the spark igniter electrode from the burner? Do you have to disconnect the gas line and remove the burner?
Thanks.

Yes. This is correct.

Gene.

10

Gene, we have replaced the spark igniter devices on the front two elements which were the problem…parts 421156. The metal spark piece that sticks out of the device is shorter than the original.*?
anyway, the front two light but spark non stop. Can you pull those wire pieces further out or how can we get that sparking to stop??
Thanks.
MaStone

11

Don’t worry about a shorter igniter tip. It has been redesigned by the manufacturer and does not need any adjustments.

Check the proper burners grounding and the spark igniter wires as described in one of our previous threads: http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/11513-viking-range-professional.html

If it would not help, replace the spark module. Make sure the wires from the ignition switches and igniters are connected to the terminals with the same numbers.

Gene.

12

Thanks for all the info. After ruling everything out, I went to the electrical schematic diagram and found that the two front wires were indeed switched. Changed them over and voila! All fixed. I think in one of the repair jobs, my husband must have hooked it back up wrong.
MaStone

13

You are welcome. I’m glad you were able to fix it. Good job!

Gene.

14

My happiness was premature. The front elements now ignite and don’t spark UNLESS you put a pot on them. You can put a corner of the pot on either of the front elements but no more or it starts to spark.
Why is this?
MaStone

15

Make sure the burners are assembled properly, the cap is in place and the burners are not wet.

Gene.

16

— Begin quote from Gene;381756

Make sure the burners are assembled properly, the cap is in place and the burners are not wet.
That seems to be ok . Even when we hold a pot above the flame, forcing the flame down, it starts the clicking.
You said the reason these electrodes were redesigned and that is why the look shorter than the old ones. Could this be part of the problem?

— End quote