Kenmore electric range replacement infinity switch?

[CapLeaker]

Actually this range had multiple problems but I fixed all the others already.

I am stuck finding a replacement infinity dual burner switch for a Kenmore C970-605121. The dual burner is stuck full on as soon as you turn the knob either side, either the difference of either only one or both burners running full tilt.
I tried cleaning it inside contacts, but that didn’t do anything.

I believe the dual burner switch reads a part number of: 318191021 which is hard to find. I came across a 318191026 part number but it has 2 pins on the row missing. Is there anything else that crosses over to 318191021?

[stj]

Re: Kenmore electric range replacement infinity switch?

13A?
no way thats a reostat - open it.
it may be a triac/diac dimmer circuit that can be repaired.

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

I already opened it and cleaned the contacts. So I am guessing the bimetal is weak. I still have my old one (from a different electric range), it is similar that that one here. I can open it and snap pics, but there are zero electronic parts inside.

[redwire]

Re: Kenmore electric range replacement infinity switch?

That is an infinite control switch p/n 50.55073.0xx what are the full digits on the backside?? it's made by E.G.O.
Lots available under Whirlpool part numbers.

I admit to putting 0.022uF 1kV caps across the contacts to shut up the arcing, although that might be big enough to zap someone pulling out the elements.

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

That is an infinite control switch p/n 50.55073.0xx what are the full digits on the backside?? it's made by E.G.O.
Lots available under Whirlpool part numbers.

I admit to putting 0.022uF 1kV caps across the contacts to shut up the arcing, although that might be big enough to zap someone pulling out the elements.

There is absolutely nothing like a part number, besides S1, L1 etc. printed on the backside of the switch. It's very tricky to even read the numbers on the front!
Interesting idea with the snubber cap, but this time the contacts were not welded shut, but did have burn marks. I cleaned them with a burnishing file and alcohol, but that didn't make any difference at all. So all I can think of is the bimetal being eff'd.

Last summer I had that same problem with my own electric range which is 7 years old now. There were the contacts welded. So I cleaned everything and put it back in service and it still works today.

[redwire]

Re: Kenmore electric range replacement infinity switch?

The Sears Kenmore range model number appears to be C970-5121 which gives:
Switch, surface element, small - Frigidaire 318293810 aka AP3951007, 1191945, 318220000, 318220060, 318369600, AH1529261, EA1529261, PS1529261.
Switch, surface element, large - Frigidaire 318293811 aka AP3951003, 1191946, 318220001, 318220061, 318369601, AH1529262, EA1529262, PS1529262.

Pics show made by Invensys open back.

My stove the switch cycles on and off on low heat and once in a while it makes a ka-blam sound of a loud arc. I think if it switches off at peak mains plus the coil element's inductance, it makes a ka-blam. Cap helped alot, not 100% but I think it's too small a value but leakage current to the element when cleaning it... I left it.

[stj]

Re: Kenmore electric range replacement infinity switch?

so it regulates by pulsing the power?
i'm not surprised they fail!

build your own with an SSR and an oscillator.

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

While this electric range looks similar, the stovetop and the infinity limiter switches are totally different than what I am repairing. Mine has a glass top with a front right dual element burner. This one has not. It is exactly that dual element infinity switch what I need, in order to have it 100% working again.

I can hardly hear the infinity limiter switches on my own Frigidaire stove. But then, my ears ring all day and my vision is going to heck too. I guess I need repairs too, LOL.

[eccerr0r]

Re: Kenmore electric range replacement infinity switch?

I would be tempted to build a ssr infinity switch if one of my mechanical ones failed ... mainly because I notice that the mechanical one generates a lot of noise.

Then again if induction stoves became more reasonably priced...

[stj]

Re: Kenmore electric range replacement infinity switch?

ssr's have zero-crossing switching, so it should cause less rf

[redwire]

Re: Kenmore electric range replacement infinity switch?

Sorry I got that wrong, what I find is the model number has the colour, region and a few options encoded in it. Finding the root part number is important with appliances, including for the american model for finding parts.
And this is the usual Kenmore, Frigidaire, Whirlpool, Westinghouse, Kelvinator, Gibson, Tappan, Electrolux build.
I have no idea what a dual burner is. I'm used to a single heating element fed either 120V or 240V. You must have SPDT in.
It's basically a PWM oscillator using a little heater on the contacts, and the time period is factory calibrated and depends on the heater size. So setting it to "3" might be 10 sec. on/30 sec. off.
From your pics switch EGO part number off the back side, I can see 50.55073.0? and the bottom has the Frigidaire part number 318191021.
-------------------------------------------------
Frigidaire 903097-9010 Dual Infinite Switch Kit is for 318191027, superceded by 318191023.
Replaces 318191027, 1015311, 9030979010, AH820835, AP3363364, EA820835, EAP820835, PS820835.
-------------------------------------------------
Frigidaire 903097-9020 Dual Infinite Switch Kit is for 318191028, superceded by 318191024.
Replaces 318191028, 1037487, PS899921.
-------------------------------------------------
Frigidaire 903097-9030 Dual Infinite Switch Kit is for 318191026.
Replaces: 318191021, 1197501, 318191026, 3515974, AH1528745, AH9865106, AP3960417, AP5948950.
-------------------------------------------------
Frigidaire 903097-9040 Dual Infinite Switch Kit is for 318191004.
Replaces 1381463, 318191001, AH1993804, EA1993804, PS1993804. Looks like it replaces 318191000 with the Y rewiring kit.
-------------------------------------------------
Frigidaire 903097-9050 Dual Infinite Switch Kit is for 318191003, superceded by 318191000.
Replaces 318191003, 833459, PS444539.
-------------------------------------------------

All they did was include a crimp Y-connector for the pilot light wire change LOL

Some E.G.O. Infinite Switch part number conversions:
50.54073.037 Frigidaire 316238200
50.55073.041 Frigidaire 318191001
50.55073.042 Frigidaire 318191000 later markups as 318191004
50.55073.043 Frigidaire 318191002
50.55073.044 Frigidaire 318191021
50.54073.044 Frigidaire 318191026
50.55073.048 Frigidaire 318191023
50.55073.050 Frigidaire 316238200
50.55073.051 Whirlpool WP9755174
50.55073.055 Whirlpool WP9755175
50.55073.068 Frigidaire 316238201
50.55073.080 Frigidaire 318191024
50.54073.080 Frigidaire 318191028
50.55073.090 Whirlpool 975030
50.55073.095 Whirlpool 9758060
50.55073.180 Whirlpool W10149355
50.55073.175 Whirlpool W10441696

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

A dual burner has 2 elements. Either you can choose the inner burner alone, or the inner and outer burn elements together ( for bigger pots ). Now the normal infinity switch goes like 360 degrees. The dual infiniti switch goes also 360 degrees, but with the difference that the right 180 degrees is for the inner element only and the left 180 degrees is for both elements together.

Here is where I got spooked:
snip
-------------------------------------------
Frigidaire 903097-9030 Dual Infinite Switch Kit is for 318191026.
Replaces: 318191021, 1197501, 318191026, 3515974, AH1528745, AH9865106, AP3960417, AP5948950.
--------------------------------------------
snap

Also the EGO # is different to what it should be compared to the Frigidaire part number.

318191026 does not replace 318191021. If you look at the picture there are 2 posts on the very bottom (back side) missing compared to what I took out.

Since these aren't cheap, I was hoping something else crosses to it.

Hopefully I remember to open up the other dual burn element infinity switch and take a picture. Thanks for the PDF! I'll get back to that later with the pic.

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

O.k. so I opened up an old 316238201 dual infinite switch. Looks similar, but yet different from the switch I need.

[redwire]

Re: Kenmore electric range replacement infinity switch?

You can see there is a trail of revisions for these infinite switches. They obsolete the old number, make a new part number. A new part is slightly different so make it a kit. Then an old switch is updated. It is a mess.

Frigidaire 318191021 is long obsolete, EGO 50.55073.044 from pic.
"318191021 has been replaced by 903097-9030" ref.
Also says replaced by 318191026 EGO 50.54073.044 in 903097-9030.
"318191026 has been replaced by 903097-9030" ref.

I would say the newer infinite switch that is slightly different (the 1026) it needs the Y-connectors and wiring mod for the pilot light. This replaces a bunch if not all of the older dual infinite switches including 1021. So the pins are different.

Interesting to look at specs for Hotpoint 45ER104C1P another model switch, that they have a "continental scale" when it switches to the second circuit.
So one difference between these is the angle of the knob to switch heating elements. Connections remain the same. You can see the calibration hex screw as well.

[redwire]

Re: Kenmore electric range replacement infinity switch?

The new style switch has no S1, S2 pins (which is for the pilot light in the original switch).
Now, the pilot lamp connects to "Jump S2 to 4 with Y-terminal", and old S1 wire is capped off with a Marrette.

It seems odd the neon pilot lamp connects to "4" when this is the inner heating element power. So how does it light when the outer heating element is energized?
edit: OK it's either inner or both inner+outer heating elements that are on, "4" is the power on/off so it will light either way. "2" is the thermostat switch from "P1"

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

Ahh! Now I start to get it. The S1 and S2 are for the burner or heating element lights or indicator. O.k. I guess you figured it out now too how this works.
O.k. Since I feel better about this now, I am gonna order a new switch and see what happens. Thanks redwire!

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

Here is the outcome. I did get that 318191026 infinity switch and put it in. Works perfect. Cleaning the old switch didn’t do anything at all in this time around. It’s the bimetal that went bad. Case closed.

[redwire]

Re: Kenmore electric range replacement infinity switch?

That's good, did you find a decent supplier?
Basically the same infinity switch goes for $28-$200 depending on the price gougers, Sears included.

AMRE used to be really good for pricing but after they got bought out, they jacked up prices and sometimes they are a ripoff.

[CapLeaker]

Re: Kenmore electric range replacement infinity switch?

Paid 87 bucks for the infinite switch. Last time I resorted to Amazon, because it was cheaper than AMRE. I don’t fix appliances too often, but I do here and there.