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Electronic Ignition for Stovetop (w/pics)

12thgenusa
Explorer
Explorer
I finally got tired enough of the piezoelectric igniter on my Atwood stovetop that I decided to replace it with a battery-powered igniter unit. You know what I’m talking about. You twist the knob; bam, bam, bam . . . bam, bam, bam and sometimes the burner lights and sometimes not.:M
I removed the old igniter and took some measurement to determine the available real estate. I found a replacement electronic igniter for Charbroil grills from Home Depot for $30 that looked promising.
The hole for the original igniter was 5/8” and the new one requires 7/8”. If you have a unibit step drill, that would work nice. But since I don’t and didn’t want to spend the $$ I used a stone grinder bit and “hogged” the hole out to 7/8. You need to “cheat” the hole slightly up and to the left for a little more clearance for the igniter.
Pull the wires off the old igniter and slide them on to the new, order does not matter. Even though the old igniter has round pins and the new has spade pins, the terminals slide on with a tight fit and work fine. Due to the higher voltage of this unit I saw occasional flashover between the terminals when it was activated. I solved that by adding a second layer of heat shrink over the terminals.
The new igniter has four terminals and since the stovetop only has three burners, that left one to add a sparker for the oven pilot light. The new unit comes with spare 37” and 32” igniter wires. I joined the two together and they were long enough to reach across the stovetop, and follow the oven control plumbing down into the oven. The longer wire looks like it has a high-temp coating, but I also wrapped the part that is actually in the oven with high-temp fiberglass tape. I needed a sparker so I removed the one from my gas grill side burner, which I never use anyway. After removing the burner assembly from the oven, I “guesstimated” the location for the sparker and drilled a 7/16” hole in the pilot support plate. Once the sparker was in place, I reinstalled the burner assembly. The sparker electrode had to be “tweaked” slightly to get a reliable spark to the outlet end of the pilot light tube.
If you don’t add the oven igniter, you need to install one of the supplied wires on the fourth terminal and coil and stow the wire so that it won’t short to the stove. If you don’t do this, the bare terminal on the igniter will flashover to the others.
After installing the single AA battery and turning on the gas, it was time for a test run.
Aaaahh . . . The stovetop burners light almost instantly, quietly and reliably. The electronic ignition sparks about six times per second for as long as you hold the button as opposed to three sparks per half-revolution of the knob on the old one.
The oven pilot lights nicely. I’ve found that if you turn the oven knob to “pilot” and hold it for about 10 seconds and then push the igniter button, it will light almost instantly. I was a little concerned about the wire in the oven, so I heated the oven to 500 degrees for a test. Everything looks good and smoke check passed.
DW is HAPPY, and you know what that means . . .:B

Before


Old Piezoelectric Igniter


New Electronic Igniter


Oven Pilot Light Sparker Installation


After


2007 Tundra DC 4X4 5.7, Alcan custom rear springs, 2009 Cougar 245RKS, 370 watts ET solar, Victron BMV-712, Victron SmartSolar 100/30, 200AH LiP04 bank, ProWatt 2000.
186 REPLIES 186

Teacher_s_Pet
Explorer
Explorer
Great mod. Our Atwood is on 9 years of fulltiming, your mod is probably cheaper than buying the part from a dealer and gets rid of the twisting wrist. Will save this to my bookmarks for when it dies.
'06 Phaeton 40' QSH
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Dutch_12078
Explorer II
Explorer II
Raften wrote:

If the knob somehow gets into the pilot position the gas comes on and will build up inside the oven over time. Happened twice after kids messed with the control.

Our Magic Chef oven control requires holding the knob pressed in while the pilot is being lit. Just turning it to the pilot position does not turn on the gas. Once lit, the knob must be held in for a few seconds longer, until the thermocouple senses the flame and locks the gas on. If the pilot blows out, the gas turns off automatically in few seconds when the thermocouple cools. I wasn't aware that any manufacturer was selling a gas oven without that critical safety feature. Every one we've owned has had it.
Dutch
2001 GBM Landau 34' Class A
F53 chassis, Triton V10, TST TPMS
Bigfoot Automatic Leveling System
2011 Toyota RAV4 4WD/Remco pump
ReadyBrute Elite tow bar/Blue Ox baseplate

Chris_Bryant
Explorer II
Explorer II
12thgenusa wrote:

Gas does not flow until:
1. Oven knob turned to "Pilot" position.
2. Oven knob pressed in and held.
3. Gas then only flows to Pilot, not main burner.


This is only true for units built after ~2004, when the use of mercury was banned in motor vehicles. Before that, the pilot had no safety on it at all, though the pilot flame is small enough that there was not much actual risk.
-- Chris Bryant

12thgenusa
Explorer
Explorer
I think we've been over this before.

Gas does not flow until:
1. Oven knob turned to "Pilot" position.
2. Oven knob pressed in and held.
3. Gas then only flows to Pilot, not main burner.

Stovetop burners:
Gas flows anytime burner knob is turned. A much higher inherent design risk IMO.


2007 Tundra DC 4X4 5.7, Alcan custom rear springs, 2009 Cougar 245RKS, 370 watts ET solar, Victron BMV-712, Victron SmartSolar 100/30, 200AH LiP04 bank, ProWatt 2000.

AnEv942
Nomad
Nomad
Just to echo, ours is like that. If you turn the knob to pilot, gas flows-period (to the pilot, not main burner). Always has always will, regardless if its waiting for a match, butane lighter or electronic spark. Ours is an atwood circa 2001, that is how its made.

It does take a while for the gas to start flowing (hence why on this type of oven gives the mis-impression gas doesnt start flowing until you hold a match to it when actually your waiting for gas to purge the air out of very small line.

Our has not been in quite year, same battery (and it was used), probabaly change out next outing, but still lights 1st or 2nd spark. Margaret uses the oven often-weve had no issues with the wire or oven ign.
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firecapt1
Explorer
Explorer
Raften,

What you describe is certainly true, but can happen whether you do this mod or not.

This has to be one of the best modifications one can make to their RV. Sure helped make peace in the family (DW) when I did this!

I am a retired Firefighter and am always very cognizant of any modification that could possibly impact fire safety. This mod has no appreciable impact on the fire safety of the oven ignition system. When the oven is turned "on" you must (currently) light it with an external source (match, lighter, etc.). After the mod, you still have to turn the oven on, and then light it with the new igniter or a match, lighter, etc.

The same argument can be used for the burners. One or more could be turned on, and then ignited after a gas buildup. The entire system isn't foolproof and is a very good reason to school everyone
in proper use/safety issues.

In essence, the mod only adds an alternate ignition option to the mix; it doesn't change the intrinsic safety of the system.

While I realize that a child (or other person) could turn the oven on (to pilot) and after a few minutes press the ignition button, this scenario would be rather rare. And yes, I do have children and know how crazy things can get.

In short, I wouldn't hesitate to do this mod, making sure everyone understood the difference in how the new system worked.
Frank, Martha & Ryan
2007 Ford F-250 SD Crew Cab
2006 Cougar 289EFS

Happy Trails to you, until we meet again! :B

Raften
Explorer
Explorer
12thgenusa wrote:
whiteeye42 wrote:
just my opinion on the oven ignigter there is a reason why the manufacture does not put one in the oven and it is because if by chance the over knob gets turned on and you don't catch in time the oven will fill with gas and then you go to lite the stove top and everything goes BOOM so just be really careful with it and check all the knobs before lighting any burners on the stove top

Not true. The oven gas valve will not turn on regardless of the knob position unless it senses heat from the pilot light. The pilot then lights the main burner when called for by the setting of the knob with feed back from the temp sensor. The above mod only makes it more convenient to light the pilot. Electronic ignition without a pilot for the oven is a whole different ball game. Nothing in this mod changes the original operation of the stove or oven; it is just more convenient and reliable.


If the knob somehow gets into the pilot position the gas comes on and will build up inside the oven over time. Happened twice after kids messed with the control.
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12thgenusa
Explorer
Explorer
OP on this thread. Oven electrode is still going strong. No issues with the wiring or igniter. I think I have replaced the battery several times since I did the mod 3 1/2 years ago.


2007 Tundra DC 4X4 5.7, Alcan custom rear springs, 2009 Cougar 245RKS, 370 watts ET solar, Victron BMV-712, Victron SmartSolar 100/30, 200AH LiP04 bank, ProWatt 2000.

JEBar
Explorer
Explorer
after reading and rereading and rereading, etc. this thread, I've put together the parts needed to add the igniter to our camper's stove .... follow-up comments from folks who have been using the electronic igniter over time would really be appreciated .... has anyone had any issues with the wire from the igniter to the oven sparker

Jim
'07 Freightliner Sportchassis
'06 SunnyBrook 34BWKS

AnEv942
Nomad
Nomad
Yes the one you picked up will work for 3 burners. They ground thru each other-you only need to ground if one of them is unused.
01 Ford F250 4x4 DRW Diesel, 01 Elkhorn 9U
Our camper projects page http://www.ourelkhorn.itgo.com

12thgenusa
Explorer
Explorer
It doesn't need a ground. Hook electrodes to all three terminals. Each electrode is positioned near a ground (burner) and the spark jumping the gap is going to ground.


2007 Tundra DC 4X4 5.7, Alcan custom rear springs, 2009 Cougar 245RKS, 370 watts ET solar, Victron BMV-712, Victron SmartSolar 100/30, 200AH LiP04 bank, ProWatt 2000.

nmhuntr
Explorer
Explorer
I have three stove eyes and bought a 3 ignitor unit at Wal Mart but I am uncertain how this can be called a three ignitor since I believe I have to sacrifice one for the ground/return. Am I missing something?? Is there a way use all three? I figured the unit got it's ground off the back of the battery box but once out of the package I see it is all plastic!!

Any ideas?

thx
2005 Fleetwood Pioneer ASV 180FK
2018 Ford F-150 3.5 EB 3.55s

AnEv942
Nomad
Nomad
Ya thats the one I went to get but they were out. I can tell you what wont work (with out trimming stove) is the 3 outlet Brinkman 812-7720-S. Its 2 5/16" tall, also makes knob hole placement critical. As your atwood sounds simular to mine the distance between the top of stove lip and the top lip of face panle is ~2 1/4". The 4 outlet generators I've seen dimensions on are less than 2" tall so should be a non issue. But it all worked out-just a bit more involved making it fit-plus I took the unused burner out of the loop.

Seemed silly go to this effort and still have to bend over to verify lit. I went looking for a stainless camp mirror or signal mirror. Couldnt find one. Walkin out passed a bin of $ specials. Had some stainless cookie spatuals for a buck. Figured be easier cutting off handle than trimming a square out of sheet I have, picked up 2.

Before I cut off handle figured I need to see where it will mount as Ill need to drill holes in it. In looking at where to place on door decided I needed a flash light. I sat the spatula on oven floor. When I walked back in-looking down I could see the ignitor..Angle of pre bent handle was perfect. Opened up the rivet holes a bit for adjustability rounded edges-quicky buff, screwed it down to the floor.

I had mirror centered-could see spark well but not pilot flame so offset it few inches

Turned off flash still kind of hard to see flame in pic but the bright blue easy to spot, especially when the arc of electrode lets you know where to focus.
01 Ford F250 4x4 DRW Diesel, 01 Elkhorn 9U
Our camper projects page http://www.ourelkhorn.itgo.com

firecapt1
Explorer
Explorer
Harbor Freight is probably where I got mine :). Seem to remember that I found the igniter & generator in the barbecue section. It's exactly the same as the OP's link suggested:

Spark generator

The igniter is a replacement igniter for a barbecue.
Frank, Martha & Ryan
2007 Ford F-250 SD Crew Cab
2006 Cougar 289EFS

Happy Trails to you, until we meet again! :B

j-d
Explorer II
Explorer II
Thanks! easy enough to check, I don't think I have a Step Bit that big, excuse to visit Harbor Freight.
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB