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Customer Questions and Answers for Hi Limit Switch by Ge

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Manufacturer Part
4.89 (64)
By: Ge
Part Number: OEM9615486
Manufacturer Part Number: WB24T10081

The Hi-Limit Switch is an OEM replacement part for GE ranges. It is a safety component responsible for monitoring internal oven temperatures. The hi-limit switch helps prevent overheating by detecting when excessive heat has built up inside the oven cavity. It will automatically cut power to the bake/broil elements if temperatures rise too high.

Causes of a bad hi limit switch can include normal failure after years of exposure to heat, or issues with the electronic components or calibration.

Symptoms of a bad hi-limit switch include:

  • The oven failing to heat up or bake/broil food properly
  • Frequent thermal cut outs requiring the oven to be unplugged
  • Delays in the oven reaching the set temperature
  • Oven will not turn on

This is a genuine OEM part that works for some models of GE, and Hotpoint models.

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Questions & Answers

For Ge Hi Limit Switch (Part Number: OEM9615486)

Lonnie Platt for Model Number FFEW3025PSC

I have a Frigidaire single wall oven that will not hold temp. If you set the set point to 350 it will get to 350, but slowly cool down to 250 and will not try to get back to set point. I have replaced the thermostat on top of the oven, the high temp sensor on the back of the oven, the temperature sensor inside the oven, the relay on the back and the control board. The oven will still not hold temp. I did notice the fan comes on immediately when I turn the oven on and will shut off immediately as soon as I turn the oven off; regardless if the oven was 400 when I turn the power off. I thought the oven fan should run until the oven temp drops below a certain point. Any suggestions on what to try next? The only thing I have not changed out is the terminal block, fan motor or the heating element.

1 Answer

Lonnie, You will want to check your wiring for broken or damaged wires that would be causing this issue since you have replaced the thermostat, sensor and board.

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Robert for Model Number JKP30WM1WW

My oven does not maintain a proper temperature when baking. The oven's display "knows" that it's not hot enough, because it will tell me that the temp is low or that it's not up to temp. I checked yesterday when baking at 450F and the oven was under 350F. I've been noticing cook issues for a while now. The broiler element will get red hot if set to broil and I can burn food with it. There appears to be no issue there. The bake element is hidden. I took it apart and out of the wall today and checked a few things at room temp. -Temp sensor reads 1080O -Broil element reads 15.8O -Bake element reads 25.6O All appears to be in spec from what I've seen, so now I'm not sure what to do next. Any help would be immensely appreciated.

1 Answer

Robert, With all things checking ok then this would be a faulty control board not reading the temperature correctly in the oven.

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1 Answer

Linda, the EOC main control WB27T11162 would need to be tested at the terminal L1 for 120VAC. If the control is receiving 120VAC, then the control display should be illuminated and if not, it has failed. If there is not 120VAC, then the unit would need to have the power turned off at the power supply and the L1 wire would need to be traced for any signs of damage.

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1 Answer

Diane, based on the information provided, as the main control was replaced the most likely issue would be that the temperature sensor is failing at higher temperatures. The hi-limit switch is a safety device that protects the unit from overheating during operation.

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1 Answer

Jkaretas, with the power turned off to the unit, the vent motor WB26T10030 will need to be tested and should have a resistance of 20 ohms. During failure, the limit switch WB24T10131 near the fan motor would need to be tested for continuity and should have continuity unless it has reached 302°F. If these test good, then the most likely failure is with the relay board WB27T10821.

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1 Answer

Hello Jeff, You will need to check the oven sensors for about 1100 ohms of resistance at about 70°F. If these are good the issue is most likely a relay on the control WB27T10906.

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1 Answer

Drew, Test the oven temperature sensor. The resistance should be 1080 ohms at room temp. Replace if out of specs.

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Tom for Model Number JKP78G*K3

The bake element 'popped' and had a visible crack in it so i replaced it with factory oem. However, new element doesn't heat up. I don't think its the control board b/c the broiler element heats up when oven is put into bake mode. I did a continuity test on the new element and it is good. Not sure how to get at the control panel to test wiring, as it shares a control displace with the micro. Wires to element look good. Is it the high limit switch? Do I need to pull the whole unit out to replace/ test circuitry?

1 Answer

Tom, The relay board could have been damaged when the old element popped. Very carefully you can remove the element and test for voltage at the wires for the element disconnected and hit bake and see if you get voltage.

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1 Answer

Hello Barry, The high limit thermostat WB24T10081 opens the circuit to both the bake and broil elements in case the relays on the control board stick in the closed position to prevent the possibility of a fire from over temperature. It can be tested for continuity with an ohm meter. If it shows continuity, it is good. If it shows no reading, it has failed and will require replacement.

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