Author Topic: Maytag Gemini MGR6772 Burner Igniters stay on after burner is lit  (Read 1948 times)

Offline rtrainer

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10 year old Gemini had all of  the burner igniters come on and stay on while cooking.  The only way to stop them was to unplug the stove.  I have found a couple of posts on the net that suggest that liquid got into one of the switches so I am letting it sit overnight in hopes that it drys out.  Another post suggested that the spark module is bad.  If this is the case what is the best way to determine that the module is bad before I go ordering the parts?

Thanks In Advance...Rob

MGR6772



Offline JWWebster

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The spark module is doing it's thang by lighting the stove. What you have is a bad spark switch. When you turn the knob to use dat stove you activate a small switch mounted on the valve stem of that burner. It activates the spark module and all them thar igniters are energized. So what can go wrong? One of them spark switches can get they contacts welded together with age. They would not release the power and therefore Houston we has a probo.
Find the bad spark switch by disconnecting each one while the action is happening till you find the bad un. Being careful of course to not git bit by shocktricity.

How it works:
« Last Edit: July 12, 2012, 07:29:42 PM by JWWebster »
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Offline RAH52

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I'd say one of the burner switches is shorted .Never seen a spark module do that .unplug the range and
with he switches in the off position ,none of them should show continuity

Offline rtrainer

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Thanks.  Now I guess I need to be pointed to something that describes how to take the top off.

Offline AJ

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I agree, it's one of the burner switches that are shorted.

Look like it would be cheaper to just replace them all now, then to replace one at a time.

Burner Switch Part # 12002788

Burner Switch Assembly Part # 12002790

Should have the full model number of your Gemini to make sure the parts above are correct.

Here is the service manual. Maybe you will find it helpful.
16021694 Maytag Gemini MGR677 Gas Range Service Manual
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Offline rtrainer

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MGR6772BDB

Wouldn't using an ohm meter tell me which one is bad?
« Last Edit: July 12, 2012, 07:52:38 PM by rtrainer »

Offline AJ

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Yes, you can use a ohm meter to check for continuity.
With all the burners switches in the off position the switches should be open and have no continuity.

So with all of them off it should be easy to tell what one is shorted or closed with your ohm meter.

Here is the diagram for model MGR6772BDB

Also the part numbers I listed above are the correct ones for your model.
You can click on the part numbers or photos above to see the prices.

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Offline rtrainer

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Ok.  I have the top off (accidentally took the head off of one of the burner screws) .  what is the best way to get the wires disconnected from the switch?  It appears that there is a slit that can have something inserted to release the wire.

Offline AJ

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Page 15 of the service manual.


Quote
3. Remove wires from spark switch by depressing
release arm.


Make sure the range is unplugged first. :)
You can straighten out a paper clip and use it to insert in the hole of the switch to get the wire to release.
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Offline rtrainer

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Stupid me on not RTFM.  My assumption is that the switch is normally open and that turning it to the light position will close it., is this correct?

Offline AJ

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Re: Maytag Gemini MGR6772 Burner Igniters stay on after burner is lit
« Reply #10 on: July 12, 2012, 09:08:44 PM »
Quote
Stupid me on not RTFM.


It happens. ;)


Quote
My assumption is that the switch is normally open and that turning it to the light position will close it., is this correct?


That's correct. You should have three that check the same and one (the bad one) that checks different then the other three.  O0



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Offline rtrainer

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Re: Maytag Gemini MGR6772 Burner Igniters stay on after burner is lit
« Reply #11 on: July 12, 2012, 09:19:42 PM »
Any suggestions on how to get the screw body out of the burner beside drilling it out or replacing the whole thing?

Offline AJ

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Re: Maytag Gemini MGR6772 Burner Igniters stay on after burner is lit
« Reply #12 on: July 12, 2012, 09:25:15 PM »
Not sure on the screw, maybe someone else will have some thoughts on that.
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Offline JWWebster

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Re: Maytag Gemini MGR6772 Burner Igniters stay on after burner is lit
« Reply #13 on: July 12, 2012, 09:27:53 PM »
I drill em out wit a 8th inch bit and pop rivet em back with an 8th in rivet. Makes life easier
May the hinges of our friendship
        never grow rusty.

About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack. The small green square=personal message. The green dot is a link to my web page on appliance repair and other general BS I love to post. The letter sends me email.
I love fan letters! LOL

Offline rtrainer

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Re: Maytag Gemini MGR6772 Burner Igniters stay on after burner is lit
« Reply #14 on: July 12, 2012, 09:59:43 PM »
Thank you everyone for helping me with this.  Found the bum switch and hopefully I can get one locally tomorrow.  If not I will order it online.  No rush as I mainly do my cooking on my Big Green Egg.

 

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